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Dinsdale, CALPHAD 15 (1991) 317.","status":"resolved","year":"1991"},{"first_author":"Ansara","kind":"assessment","label":"27","reference":"I. Ansara, B. Sundman, The Scientific Group Thermodata Europe, in: P.S. Glaeser (Ed.), Computer Handling and Dissemination of Data, Elsevier Science Pub. Co., Amsterdam, 1987.","status":"resolved","year":"1987"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"model","flags":{"calphad_check":"not_available","dropped_field_count":1,"espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"has_dropped_fields":true,"review_flags":["NOTE_SELF_FLAG"],"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":0,"gate_failures":[{"code":"state_phases_missing","detail":"TRANSITION_TEMPERATURE without the phases of its state (not_a_single_phase_transition)","effect":"not_accepted","gate":"R3"}],"id":"ORC-RB45QPWTGB.f96d9c","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.jnucmat.2011.06.034/p2/text-31"},"observation_type":"phase_transition","origin":{"class":"model_value","measured_in":"doi:10.1016/0364-5916(91)90030-n","own_work_of_paper":false},"paper":"doi:10.1016/j.jnucmat.2011.06.034","paper_id":"doi:10.1016/j.jnucmat.2011.06.034","pid":"doi:10.1016/j.jnucmat.2011.06.034/p2/text-31/s03#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"TRANSITION_TEMPERATURE","property_group":"phase transition","quote":"In the case of pure Pu, the six transitions, aPu (monoclinic) ? b-Pu (body-centered monoclinic) ? c-Pu (face-centered orthorhombic) ? d-Pu (fcc) ? d0 -Pu (body-centered tetragonal) ?  -Pu (bcc) ? Liquid, are well described energetically with transition temperatures of 124, 215, 320, 463, 483, and 640 °C, respectively.","quote_page":2,"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":"AM-PU","system":"AM-PU","temperature_K":488.15,"temperature_printed":"215 C","tool_release":"release v2 + tools dev copy record build","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 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statement","class":"model_value","measured_in":"doi:10.1016/j.jnucmat.2011.06.034","own_work_of_paper":true},"paper":"doi:10.1016/j.jnucmat.2011.06.034","paper_id":"doi:10.1016/j.jnucmat.2011.06.034","pid":"doi:10.1016/j.jnucmat.2011.06.034/p4/text-59/s03#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"TRANSITION_TEMPERATURE","property_group":"phase transition","quote":"Also, based on this assessment, although a phase separation tendency exists for the bcc phase of Am-Pu with a maximum temperature of about 180 °C for the metastable symmetric miscibility gap (see dashed line in Fig. 4), a tendency toward order is predicted for the fcc phase of Am-Pu, with a rather high and negative heat of mixing around equi-atomic composition, see Fig. 3.","quote_page":4,"reaction":{"type":"other"},"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":"AM-PU","system":"AM-PU","temperature_K":453.15,"temperature_printed":"180 °C","tool_release":"release v2 + tools dev copy record build","transition_kind":"other","transition_kind_printed":"other","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 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Liquid + (c-Am) takes place at 670 °C with compositions (in at.% Pu) of 90.4, 96.0, and 94.6, respectively.","quote_page":7,"reaction":{"printed":"(d-Pu) ? Liquid + (c-Am)","type":"peritectic"},"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":"AM-PU","system":"AM-PU","temperature_K":943.15,"temperature_printed":"670","tool_release":"release v2 + tools dev copy record build","transition_kind":"peritectic","transition_kind_printed":"peritectic","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":0.005},"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":943.15},{"chemical_system":"AM-PU","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":0,"gate_failures":[{"code":"state_phases_missing","detail":"INVARIANT_TEMPERATURE without the phases of its state (garbled_reaction_sign)","effect":"not_accepted","gate":"R3"}],"id":"ORC-77SW4BHLWP","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.jnucmat.2011.06.034/p7/text-03"},"observation_type":"phase_transition","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.jnucmat.2011.06.034","own_work_of_paper":true},"paper":"doi:10.1016/j.jnucmat.2011.06.034","paper_id":"doi:10.1016/j.jnucmat.2011.06.034","pid":"doi:10.1016/j.jnucmat.2011.06.034/p7/text-03/s11#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":"It is also important to note that to insure compatibility with the existence of the high-temperature allotrope of Am (c-Am or bcc), a second peritectic reaction should take place on the Am-rich side of the phase diagram, namely (d-Pu) ? Liquid + (c-Am) at 1126 °C with compositions (in at.% Pu) of 7.7, 9.2, and 6.7, respectively, as illustrated in Fig. 11.","quote_page":7,"reaction":{"printed":"(d-Pu) ? 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(a-Pu) + (a-Am) at 104 °C with compositions (in at.% Pu) of 31.1,  100, and 2.2, respectively.","quote_page":7,"reaction":{"printed":"(d-Pu, b-Am) ? (a-Pu) + (a-Am)","type":"eutectoid"},"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":"AM-PU","system":"AM-PU","temperature_K":377.15,"temperature_printed":"104 C","tool_release":"release v2 + tools dev copy record build","transition_kind":"eutectoid","transition_kind_printed":"eutectoid","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":0.005},"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":377.15},{"chemical_system":"AM-PU","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":0,"gate_failures":[{"code":"state_phases_missing","detail":"INVARIANT_TEMPERATURE without the phases of its state (reactions_in_quote:0)","effect":"not_accepted","gate":"R3"}],"id":"ORC-T4R3AILKXD","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.jnucmat.2011.06.034/p7/text-04"},"observation_type":"phase_transition","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.jnucmat.2011.06.034","own_work_of_paper":true},"paper":"doi:10.1016/j.jnucmat.2011.06.034","paper_id":"doi:10.1016/j.jnucmat.2011.06.034","pid":"doi:10.1016/j.jnucmat.2011.06.034/p7/text-04/s11#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":"It is also worth noting that a small region of fcc miscibility gap, shown in the inset of Fig. 10 and mentioned in the previous paragraph, survives and leads to an eutectoid reaction at 136°C that involves two fcc phases and b-Pu.","quote_page":7,"reaction":{"type":"eutectoid"},"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":"AM-PU","system":"AM-PU","temperature_K":409.15,"temperature_printed":"136 C","tool_release":"release v2 + tools dev copy record build","transition_kind":"eutectoid","transition_kind_printed":"eutectoid","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":0.005},"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":409.15}],"release":"orchid-literature 2026-10-23 (record store db-v2.1: invariant/general v2.1.19r, text+context fixup-20261022)","system":"AM-PU"}