{"artifacts":{"doi:10.1007/bf02649916/p5/tab-6":{"artifact":"table","caption":"Details of the Four-Phase Invariant Equilibria","label":"6","page":5},"doi:10.1007/bf02649916/p6/tab-7":{"artifact":"table","caption":"A Reaction Scheme for the AI-C-Fe System","label":"7","page":6},"doi:10.1007/bf02649916/p7/text-04":{"artifact":"text_passage","label":"page 7, passage 4","page":7}},"cite_as":{"also_cite":["the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work)"],"bibtex":"@misc{orchid_literature_2026,\n  author    = {Arr{\\'o}yave, Raymundo and Saal, James and Shin, Dongwon},\n  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},\n  version   = {2026.10},\n  publisher = {Zenodo},\n  year      = {2026},\n  doi       = {10.5281/zenodo.23735569},\n  url       = {https://doi.org/10.5281/zenodo.23735569},\n  note      = {Version 1, machine-extracted}\n}","dataset":"literature","doi":"10.5281/zenodo.23735569","license":"CC-BY-4.0","part_of":{"bibtex":"@misc{orchid_data_2026,\n  author    = {Arr{\\'o}yave, Raymundo and Saal, James and Shin, Dongwon},\n  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},\n  version   = {2026.10},\n  publisher = {Zenodo},\n  year      = {2026},\n  doi       = {10.5281/zenodo.23736065},\n  url       = {https://doi.org/10.5281/zenodo.23736065},\n  note      = {Version 1, machine-extracted}\n}","doi":"10.5281/zenodo.23736065","text":"R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065","title":"ORCHID data: umbrella record of the ORCHID datasets","url":"https://doi.org/10.5281/zenodo.23736065"},"release_tag":"v2026.10","status":"Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.","text":"R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569","title":"ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature","url":"https://doi.org/10.5281/zenodo.23735569","version":"2026.10"},"contexts":{},"elements":["AL","C","FE"],"licence":"CC BY 4.0 (ORCHID data; quotes are short excerpts kept for verification, the publishers' copyright, not relicensed)","models":{},"note":"records[].locator.ref -> artifacts; records[].model -> models (full records: orchid-literature.jsonl.gz)","papers":{"doi:10.1007/bf02649916":{"authors":["K. C. Hari Kumar","V. Raghavan"],"citation":"K. C. Hari Kumar, V. Raghavan, A Thermodynamic Analysis of the Al-C-Fe System, JPE 12, 275-286 (1991).","container":"JPE","doi":"10.1007/bf02649916","doi_url":"https://doi.org/10.1007/bf02649916","id":"doi:10.1007/bf02649916","kind":"corpus_paper","metadata_source":"crossref","pdf_sha256_prefix":"d8d8f438ac5a56b5","roles":["cited_source","reporting_paper"],"source_kinds":["journal_article"],"title":"A Thermodynamic Analysis of the Al-C-Fe System","year":1991}},"part":1,"parts":1,"records":[{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Schuermann","kind":"unknown","label":"86Sch","reference":"E. Schuermann and J. Von Schweinichen, \"Study of the Melt Equih'briafor Iron-RichTernary Fe-C-XiAlloys withXi =Al, Cu, Ni, and Cr,\" GiessereO'orschung,38(4), 125-132(1986) in German.(#)","status":"resolved","year":"1986"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-VOKKVTZLMJ","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":1},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.213,"C":0.09},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.213,"C":0.09},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"α"},{"label":"γ"},{"label":"κ"}],"phases_dropped":[{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","α","γ","κ","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r01#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α <-> γ + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1586.15,"temperature_printed":"1313","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1586.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Raghavan","kind":"unknown","label":"87Rag","reference":"V.Raghavan,\"TheAl-C-Fe(Aluminum-Carbon-Iron)System,\" Phase Diagrams of TernaryIronA//oys, Part 1, American Societyfor Metals, MetalsPark, OH, 89-97 (1987). (#)","status":"resolved","year":"1987"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-GFKHZHMPFU","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":2},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.203,"C":0.097},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.34,"C":0.003},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.203,"C":0.054},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.34,"C":0.003},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.203,"C":0.054},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.203,"C":0.097},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"α"},{"label":"γ"},{"label":"κ"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","α","γ","κ","α phase","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r02#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α <-> γ + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1570.15,"temperature_printed":"1297","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1570.15},{"chemical_system":"AL-C-FE","cited_sources":[{"kind":"unknown","label":"90Pal","status":"unresolved"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-I6B6SD44I6","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":3},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.202,"C":0.079},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.27,"C":0.007},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.245,"C":0.04},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.27,"C":0.007},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.245,"C":0.04},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.202,"C":0.079},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"α"},{"label":"γ"},{"label":"κ"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","α","γ","κ","α phase","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r03#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α <-> γ + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1588.15,"temperature_printed":"1315","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1588.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-MO6ORBB3MT","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":4},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.193,"C":0.077},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.221,"C":0.01},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.204,"C":0.046},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.221,"C":0.01},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.204,"C":0.046},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.193,"C":0.077},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"α"},{"label":"γ"},{"label":"κ"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","α","γ","κ","α phase","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r04#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α <-> γ + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1591.15,"temperature_printed":"1318","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1591.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Schuermann","kind":"unknown","label":"86Sch","reference":"E. Schuermann and J. Von Schweinichen, \"Study of the Melt Equih'briafor Iron-RichTernary Fe-C-XiAlloys withXi =Al, Cu, Ni, and Cr,\" GiessereO'orschung,38(4), 125-132(1986) in German.(#)","status":"resolved","year":"1986"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-JCTOOAWNUS","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":5},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.303,"C":0.068},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.303,"C":0.068},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","α","gr","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r05#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1578.15,"temperature_printed":"1305","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1578.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Raghavan","kind":"unknown","label":"87Rag","reference":"V.Raghavan,\"TheAl-C-Fe(Aluminum-Carbon-Iron)System,\" Phase Diagrams of TernaryIronA//oys, Part 1, American Societyfor Metals, MetalsPark, OH, 89-97 (1987). (#)","status":"resolved","year":"1987"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-4TVSTFQ65F","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":6},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.386,"C":0.03},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.368,"C":0.003},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.368,"C":0.003},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.386,"C":0.03},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","α","gr","α phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r06#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1558.15,"temperature_printed":"1285","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1558.15},{"chemical_system":"AL-C-FE","cited_sources":[{"kind":"unknown","label":"90Pal","status":"unresolved"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-4P5M6QGIXC","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":7},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.342,"C":0.054},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.337,"C":0.007},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.337,"C":0.007},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.342,"C":0.054},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","α","gr","α phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r07#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1568.15,"temperature_printed":"1295","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1568.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-VIMVKV6T6E","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":8},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.333,"C":0.06},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.348,"C":0.009},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.348,"C":0.009},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.333,"C":0.06},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","α","gr","α phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r08#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1570.15,"temperature_printed":"1297","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1570.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Schuermann","kind":"unknown","label":"86Sch","reference":"E. Schuermann and J. Von Schweinichen, \"Study of the Melt Equih'briafor Iron-RichTernary Fe-C-XiAlloys withXi =Al, Cu, Ni, and Cr,\" GiessereO'orschung,38(4), 125-132(1986) in German.(#)","status":"resolved","year":"1986"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-MS667E7WH4","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":9},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.17,"C":0.114},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.17,"C":0.114},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"γ"},{"label":"gr"}],"phases_dropped":[{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","γ","gr","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r09#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> γ + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1557.15,"temperature_printed":"1284","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1557.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Raghavan","kind":"unknown","label":"87Rag","reference":"V.Raghavan,\"TheAl-C-Fe(Aluminum-Carbon-Iron)System,\" Phase Diagrams of TernaryIronA//oys, Part 1, American Societyfor Metals, MetalsPark, OH, 89-97 (1987). (#)","status":"resolved","year":"1987"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-XROUSLALDQ","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":10},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.154,"C":0.116},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.173,"C":0.092},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.173,"C":0.092},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.154,"C":0.116},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"γ"},{"label":"gr"}],"phases_dropped":[{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","γ","gr","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r10#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> γ + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1553.15,"temperature_printed":"1280","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1553.15},{"chemical_system":"AL-C-FE","cited_sources":[{"kind":"unknown","label":"90Pal","status":"unresolved"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-CD7TURAAXR","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":11},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.134,"C":0.124},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.165,"C":0.045},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.165,"C":0.045},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.134,"C":0.124},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"γ"},{"label":"gr"}],"phases_dropped":[{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","γ","gr","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r11#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> γ + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1555.15,"temperature_printed":"1282","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1555.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-QRTZ63JSOV","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":12},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.123,"C":0.116},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.148,"C":0.074},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.148,"C":0.074},"composition_source":"printed","phase":"γ phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.123,"C":0.116},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"κ"},{"label":"γ"},{"label":"gr"}],"phases_dropped":[{"label":"γ phase","reason":"repeats phase 'γ'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","κ","γ","gr","γ phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r12#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ <-> γ + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1555.15,"temperature_printed":"1282","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1555.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-AZ3LMWXHWG","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":13},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.379,"C":0.001},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.379,"C":0.001},"composition_source":"printed","phase":"α phase"}],"phases":[{"label":"α"},{"label":"gr"},{"label":"Al4C3"},{"label":"κ"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"}],"phases_stored":["α","gr","Al4C3","κ","α phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r13#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"α + gr <-> Al4C3 + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1263.15,"temperature_printed":"990","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1263.15},{"chemical_system":"AL-C-FE","cited_sources":[{"first_author":"Raghavan","kind":"unknown","label":"87Rag","reference":"V.Raghavan,\"TheAl-C-Fe(Aluminum-Carbon-Iron)System,\" Phase Diagrams of TernaryIronA//oys, Part 1, American Societyfor Metals, MetalsPark, OH, 89-97 (1987). (#)","status":"resolved","year":"1987"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-B2WVXGL3X4","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":14},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.096,"C":0.047},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.108,"C":0.0},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.108,"C":0.0},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.096,"C":0.047},"composition_source":"printed","phase":"γ phase"}],"phases":[{"label":"κ"},{"label":"γ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"}],"phases_stored":["κ","γ","α","gr","α phase","γ phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r14#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"κ + γ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1003.15,"temperature_printed":"730","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1003.15},{"chemical_system":"AL-C-FE","cited_sources":[{"kind":"unknown","label":"90Pal","status":"unresolved"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-TY4LXLPR4E","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":15},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","own_work_of_paper":false},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.085,"C":0.048},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.085,"C":0.007},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.085,"C":0.007},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.085,"C":0.048},"composition_source":"printed","phase":"γ phase"}],"phases":[{"label":"κ"},{"label":"γ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"}],"phases_stored":["κ","γ","α","gr","α phase","γ phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r15#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"κ + γ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1098.15,"temperature_printed":"825","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.011,"sigma_method":{"basis":"calibrated","ci95":[0.010484,0.011532],"class":"unknown","entry":"value_types/X_PHASE/classes/unknown","floor":0.011,"floor_unit":"mole fraction","n_pairs":3014,"value":0.011},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1098.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-BCY5DPC4LO","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":16},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.104,"C":0.048},"composition_source":"printed","phase":"γ"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.115,"C":0.001},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.115,"C":0.001},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.104,"C":0.048},"composition_source":"printed","phase":"γ phase"}],"phases":[{"label":"κ"},{"label":"γ"},{"label":"α"},{"label":"gr"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"γ phase","reason":"repeats phase 'γ'"}],"phases_stored":["κ","γ","α","gr","α phase","γ phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r16#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"κ + γ <-> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1094.15,"temperature_printed":"821","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1094.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false},"fold_lpo":1,"fold_lso":0,"id":"ORC-CDDDNTACUV","locator":{"ref":"doi:10.1007/bf02649916/p5/tab-6","row":17},"model_unlinked_reason":"linked TDB not the reporting paper's own model (link basis: TDB of exactly this system)","observation_type":"invariant_reaction","origin":{"basis":"this_work+paper_text_states_calculated","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phase_compositions":[{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.396,"C":0.048},"composition_source":"printed","phase":"L"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.398,"C":0.007},"composition_source":"printed","phase":"α"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.398,"C":0.007},"composition_source":"printed","phase":"α phase"},{"basis":"mole_fraction (converted from atomic percent)","composition":{"AL":0.396,"C":0.048},"composition_source":"printed","phase":"Liquid phase"}],"phases":[{"label":"L"},{"label":"α"},{"label":"gr"},{"label":"Al4C3"}],"phases_dropped":[{"label":"α phase","reason":"repeats phase 'α'"},{"label":"Liquid phase","reason":"repeats phase 'L'"}],"phases_stored":["L","α","gr","Al4C3","α phase","Liquid phase"],"pid":"doi:10.1007/bf02649916/p5/tab-6/r17#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L <-> α + gr + Al4C3","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","temperature_K":1563.15,"temperature_printed":"1290","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"E","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"composition":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.005,"sigma_method":{"basis":"calibrated","ci95":[0.004448,0.004448],"class":"model_calculated","entry":"model/X_PHASE","floor":0.005,"floor_unit":"mole fraction","n_pairs":16730,"value":0.005},"sigma_printed":null,"sigma_reading":{"basis":"last_stored_digit","value":0.0005},"sigma_scatter":null,"unit":"mole fraction","value_type":"X_PHASE"},"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1563.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-J262QYU2FR","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":1},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"gr"},{"label":"Al4C3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r01#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + gr -> Al4C3","type":"peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":2446.15,"temperature_printed":"2173 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"peritectic","transition_kind_printed":"p","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":2446.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe."},"field":"system","gate":"G4","rule":"system_read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"2ef202d14467dffff899edbc2f158c8f9777262e677ba91af8b2f656e2bd6c7b","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe.","verdict":"higher_order"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-5RYNDSIEJD","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":5},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"α","model_phase":"BCC_A2"},{"label":"γ","model_phase":"FCC_A1"},{"label":"κ"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r05#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α -> γ + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1591.15,"temperature_printed":"1318 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1591.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe."},"field":"system","gate":"G4","rule":"system_read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"2ef202d14467dffff899edbc2f158c8f9777262e677ba91af8b2f656e2bd6c7b","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe.","verdict":"higher_order"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-RPTX5KEGER","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":6},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"κ"},{"label":"α","model_phase":"BCC_A2"},{"label":"gr"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r06#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ -> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1570.15,"temperature_printed":"1297 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1570.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-LR3CB6Y5NF","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":7},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"α","model_phase":"BCC_A2"},{"label":"Al4C3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r07#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> α + Al4C3","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1567.15,"temperature_printed":"1294 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"e","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1567.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-ZLQFOWJ3O2","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":8},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"α","model_phase":"BCC_A2"},{"label":"gr"},{"label":"Al4C3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r08#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> α + gr + Al4C3","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1563.15,"temperature_printed":"1290 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"E","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1563.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe."},"field":"system","gate":"G4","rule":"system_read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"2ef202d14467dffff899edbc2f158c8f9777262e677ba91af8b2f656e2bd6c7b","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe.","verdict":"higher_order"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-H5V5Q7CPQF","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":9},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"κ"},{"label":"γ","model_phase":"FCC_A1"},{"label":"gr"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r09#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + κ -> γ + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1555.15,"temperature_printed":"1282 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1555.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":["L","α","Al4C3","ε"],"before":["L","α","Al4C3"],"evidence":{"added":["ε"],"printed":"L + α -> ε + Al4C3"},"field":"phases","gate":"R3I","rule":"phases_from_printed_reaction"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"gate_failures":["phases_added_from_printed_reaction"],"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"gate_failures":[{"code":"phases_added_from_printed_reaction","detail":"phases ['ε'] read from the printed reaction; not mapped to model phases","effect":"not_espei_ready","gate":"R3I"}],"id":"ORC-DMTEWWM4RH","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":11},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"α","model_phase":"BCC_A2"},{"label":"Al4C3"},{"label":"ε","label_source":"printed_reaction"}],"phases_stored":[{"label":"L","model_phase":"LIQUID"},{"label":"α","model_phase":"BCC_A2"},{"label":"Al4C3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r11#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + α -> ε + Al4C3","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1483.15,"temperature_printed":"~1210 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1483.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-BGFUFXV7ZT","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":12},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"Fe2Al5"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r12#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> ε + Fe2Al5","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1437.15,"temperature_printed":"1164 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"e","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1437.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-BWPOIU5NGO","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":13},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"Al4C3"},{"label":"Fe2Al5"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r13#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + ε -> Al4C3 + Fe2Al5","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1433.15,"temperature_printed":"~1160 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1433.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-EQ72GG7IOS","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":14},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"Fe2Al5"},{"label":"FeAl3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r14#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + Fe2Al5 -> FeAl3","type":"peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1430.15,"temperature_printed":"1157 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"peritectic","transition_kind_printed":"p","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1430.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-3WCJJQFWZE","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":15},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"Fe2Al5"},{"label":"Al4C3"},{"label":"FeAl3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r15#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L + Fe2Al5 -> Al4C3 + FeAl3","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1428.15,"temperature_printed":"~1155 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1428.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-LT36JW4K42","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":16},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"Fe2Al5"},{"label":"FeAl2"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r16#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"ε + Fe2Al5 -> FeAl2","type":"other"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1427.15,"temperature_printed":"1154 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"other","transition_kind_printed":"other","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1427.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-MZARDO3ANE","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":18},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"Fe2Al5"},{"label":"Al4C3"},{"label":"FeAl2"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r18#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"ε + Fe2Al5 -> Al4C3 + FeAl2","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1423.15,"temperature_printed":"~1150 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1423.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":["ε","FeAl2","α"],"before":["ε","FeAl2"],"evidence":{"added":["α"],"printed":"ε -> α + FeAl2"},"field":"phases","gate":"R3I","rule":"phases_from_printed_reaction"},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"gate_failures":["phases_added_from_printed_reaction"],"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"gate_failures":[{"code":"phases_added_from_printed_reaction","detail":"phases ['α'] read from the printed reaction; not mapped to model phases","effect":"not_espei_ready","gate":"R3I"}],"id":"ORC-7LPLHVKOLQ","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":19},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"FeAl2"},{"label":"α","label_source":"printed_reaction"}],"phases_stored":[{"label":"ε","model_phase":"BCC_A2"},{"label":"FeAl2"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r19#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"ε -> α + FeAl2","type":"other"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1365.15,"temperature_printed":"1092 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"other","transition_kind_printed":"other","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1365.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}},{"after":["ε","Al4C3","FeAl2","α"],"before":["ε","Al4C3","FeAl2"],"evidence":{"added":["α"],"printed":"ε -> Al4C3 + α + FeAl2"},"field":"phases","gate":"R3I","rule":"phases_from_printed_reaction"},{"after":null,"before":"BCC_A2","evidence":{"label":"ε","release":"phase-label-check 2026-10-24 (audit round 2, A2 class 1)"},"field":"phases.model_phase","gate":"PL","rule":"greek_label_not_an_element_polymorph_of_this_structure"}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"gate_failures":["phases_added_from_printed_reaction"],"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"gate_failures":[{"code":"phases_added_from_printed_reaction","detail":"phases ['α'] read from the printed reaction; not mapped to model phases","effect":"not_espei_ready","gate":"R3I"}],"id":"ORC-KGELXRBGLY","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":20},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"ε","model_phase_rejected":{"model_phase":"BCC_A2","reason":"greek_label_not_an_element_polymorph_of_this_structure"}},{"label":"Al4C3"},{"label":"FeAl2"},{"label":"α","label_source":"printed_reaction"}],"phases_stored":[{"label":"ε","model_phase":"BCC_A2"},{"label":"Al4C3"},{"label":"FeAl2"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r20#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"ε -> Al4C3 + α + FeAl2","type":"other"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1363.15,"temperature_printed":"~1090 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"other","transition_kind_printed":"other","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1363.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-ZLM5LWZDOE","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":21},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"α","model_phase":"BCC_A2"},{"label":"gr"},{"label":"Al4C3"},{"label":"κ"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r21#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"α + gr -> Al4C3 + κ","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1263.15,"temperature_printed":"990 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1263.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe."},"field":"system","gate":"G4","rule":"system_read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"2ef202d14467dffff899edbc2f158c8f9777262e677ba91af8b2f656e2bd6c7b","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 Reaction Scheme for the Al-C-Fe System; columns Al-C | Al-C-Fe | Al-Fe | C-Fe. U1 1318°C L+α↔γ+κ, U2 1297°C L+κ↔α+gr, U3 1282°C L+κ↔γ+gr, U9 821°C κ+γ↔α+gr (ternary, κ=Fe3AlC0.565); p4 1215°C L+α↔ε under Al-Fe.","verdict":"higher_order"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-IZI7KL4SX5","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":22},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"κ"},{"label":"γ","model_phase":"FCC_A1"},{"label":"α","model_phase":"BCC_A2"},{"label":"gr"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r22#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"κ + γ -> α + gr","type":"quasi-peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":1094.15,"temperature_printed":"821 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"quasi-peritectic","transition_kind_printed":"U","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1094.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-XV6H27EWS4","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":24},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"(Al)","model_phase":"FCC_A1"},{"label":"Al4C3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r24#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> (Al) + Al4C3","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":933.15,"temperature_printed":"660 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"e","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":933.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":true,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-XJHRYW7V5Z","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":25},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"FeAl3"},{"label":"(Al)","model_phase":"FCC_A1"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r25#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> FeAl3 + (Al)","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":925.15,"temperature_printed":"652 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"e","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":925.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"own_work_origin_unspecified"},"corrections":[{"after":"AL-C-FE","before":"C-FE","evidence":{"caption_systems":[],"cement_notation":null,"foreign_elements":["AL"]},"field":"system","gate":"G4","rule":"system_from_phase_formulas_and_caption","visual_check":{"checked":"2026-10-23","image_sha256":"aa1bcc09633ac24a78e981e312e1bbea8e07986c80345080ffe1bb4fcf763286","page":6,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"Table 7 'A Reaction Scheme for the Al-C-Fe System'; columns Al-C, Al-C-Fe, Al-Fe, C-Fe. Stored rows: p1 2173 °C L+gr<->Al4C3 (Al-C col), e2 1294, E1 1290, U4 ~1210, e3 1164 (Al-Fe), U5 ~1160, p5 1157, U6 ~1155. Not C-Fe.","verdict":"confirmed"}}],"evidence_class":"unspecified","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","row_state":"settled","state_fully_specified":false,"system_reassigned":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-55IMDTGHX6","locator":{"ref":"doi:10.1007/bf02649916/p6/tab-7","row":26},"observation_type":"invariant_reaction","origin":{"basis":"no_printed_or_resolvable_source_kind","class":"unspecified","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"L","model_phase":"LIQUID"},{"label":"Al4C3"},{"label":"(Al)","model_phase":"FCC_A1"},{"label":"FeAl3"}],"pid":"doi:10.1007/bf02649916/p6/tab-7/r26#invariant_reaction","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","reaction":{"printed":"L -> Al4C3 + (Al) + FeAl3","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"invariant_table","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"C-FE","temperature_K":923.15,"temperature_printed":"~650 °C","temperature_uncertainty":{"basis":"stated_default","value":2.0},"tool_release":"v2.1.19p","transition_kind":"eutectic","transition_kind_printed":"E","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.005},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":923.15},{"chemical_system":"AL-C-FE","conditions":{"kind":"not_applicable_own_calculation"},"corrections":[{"after":"AL-C-FE","before":"AL-C","evidence":{"seen":"text: 'ternary eutectic reaction, E1 at 1563 K (1290 °C)' liquid 39.6 at.% Al, 4.8 at.% C → bcc(α)+Al4C3+graphite; 'A14C3' is Al4C3"},"field":"system","gate":"G4","rule":"system_read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"5aa003a05a1b93628c15c2827c43d00c31f95178d2a7858a9ced550efbf50554","page":7,"pdf_sha256_prefix":"d8d8f438ac5a56b5","seen":"text: 'ternary eutectic reaction, E1 at 1563 K (1290 °C)' liquid 39.6 at.% Al, 4.8 at.% C → bcc(α)+Al4C3+graphite; 'A14C3' is Al4C3","verdict":"higher_order"}}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","second_reader":"done","system_reassigned":true,"value_in_quote":true},"fold_lpo":1,"fold_lso":0,"id":"ORC-HC2AK6N3NK","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1007/bf02649916/p7/text-04"},"observation_type":"phase_transition","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1007/bf02649916","own_work_of_paper":true},"paper":"doi:10.1007/bf02649916","paper_id":"doi:10.1007/bf02649916","phases":[{"label":"liquid"},{"label":"bcc (a)"},{"label":"A14C3"},{"label":"graphite"}],"pid":"doi:10.1007/bf02649916/p7/text-04/s01#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","quote":"In addition to the above invariant reactions, the computed results predict a ternary eutectic reaction, Eb at 1563 K (1290 \"C) with the liquid composition at 39.6 at.% AI and 4.8 at.% C, which yields bcc (a) of 39.8 at.% Al and 0.66 at.% C, A14C3 and graphite.","quote_page":7,"reaction":{"printed":"liquid -> bcc (a) + A14C3 + graphite","type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash","readers":["claude-opus-5.5","gemini-3.8-flash"],"record_kind":"running_text","source_system":"AL-C-FE","system":"AL-C-FE","system_stored":"AL-C","temperature_K":1563.0,"temperature_printed":"1563 K (1290 \"C)","tool_release":"release v2 + tools dev copy record build","transition_kind":"eutectic","transition_kind_printed":"eutectic","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.05},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":1563.0}],"release":"orchid-literature 2026-10-23 (record store db-v2.1: invariant/general v2.1.19r, text+context fixup-20261022)","system":"AL-C-FE"}