# Al–P–Si system > Al–P–Si system: 3 accepted literature values (invariant reaction 2, phase transition 1) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/AL-P-SI.html · Markdown: https://data.orchid-project.org/systems/AL-P-SI.md 3 accepted literature values from 1 paper(s) (model 3); 0 calculated phase diagram(s). 3 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV. Data: [JSON](https://data.orchid-project.org/literature/systems/AL-P-SI.json) · [CSV](https://data.orchid-project.org/systems/AL-P-SI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-P-SI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-P-SI.html) · [Markdown](https://data.orchid-project.org/systems/AL-P-SI.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | model | 3 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 2 | | phase transition | 1 | ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Al–P–Si system (2) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 850.15 | eutectic: L -> (Al) + (Si) + AlP | | model | [1] Liang 2014 | p. 8; `ORC-3MHB2PKEZY` | “However, an extra ZPF line of the AlP phase appears, shown as the red dashed line between the liquidus and solidus line of (Al) and continuing exactly along the horizontal line at 577 °C above 7 wt.% Si. This entire horizontal line in Fig. 10a represents the cut through the ternary eutectic L ! (Al) + (Si) + AlP four-phase equilibrium.” | | 850.15 | eutectic: L ! (Al) + (Si) + AlP | | model | [1] Liang 2014 | p. 15; `ORC-5E2CCCWSR4` | “Based on this, the first consistent and experimentally supported Al-Si-P phase diagram was calculated, including details of the most important ternary eutectic, L ! (Al) + (Si) + AlP, at 577 °C.” | ## Other properties ### Phase transition (1) Table: Phase transition, Al–P–Si system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase transition | 789.15 K | 789.15 | L -> (Al) + AlP | model | [1] Liang 2014 | p. 14; `ORC-CYFWBNDDKQ` | “This ends at 516 °C, where the extended solidification path hits the metastable extension of the AlP crystallization surface. At this point the calculated residual liquid composition is 19.9 wt.% Si and 2.2 ppm P, which may be compared with Fig. 6.” | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Song-Mao Liang, Rainer Schmid-Fetzer, Phosphorus in Al–Si cast alloys: Thermodynamic prediction of the AlP and eutectic (Si) solidification sequence validated by microstructure and nucleation undercooling data, Acta Materialia 72, 41-56 (2014). [doi:10.1016/j.actamat.2014.02.042](https://doi.org/10.1016/j.actamat.2014.02.042) ## Please cite - 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 - 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 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); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0). 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. ```bibtex @misc{orchid_literature_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735569}, url = {https://doi.org/10.5281/zenodo.23735569}, note = {Version 1, machine-extracted} } @misc{orchid_data_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID data: umbrella record of the ORCHID datasets}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23736065}, url = {https://doi.org/10.5281/zenodo.23736065}, note = {Version 1, machine-extracted} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).