# Al–Cr–Mg system > Al–Cr–Mg system: 21 accepted literature values (phase equilibrium 16, crystal structure 3, formation 2) 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-CR-MG.html · Markdown: https://data.orchid-project.org/systems/AL-CR-MG.md 21 accepted literature values from 1 paper(s) (experimental 16, model 2, DFT 2, unspecified 1); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/AL-CR-MG.json) · [CSV](https://data.orchid-project.org/systems/AL-CR-MG.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-CR-MG) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-CR-MG.html) · [Markdown](https://data.orchid-project.org/systems/AL-CR-MG.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 16 | | model | 2 | | DFT | 2 | | unspecified | 1 | Table: Accepted values by property group | Property group | Values | |---|---:| | phase equilibrium | 16 | | formation | 2 | | crystal structure | 3 | ## Formation enthalpies Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json). Table: Enthalpies of formation, Al–Cr–Mg system (2) | Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote | |---|---|---:|---:|---|---:|---:|---|---|---| | T (Al18Mg3Cr2) | | -246.5 kJ/mol (basis unstated) | 298.15 | model | | | [1] Cui 2017 | Table 3, p. 4, row 4; `ORC-PTJ4YGQP3K.29d759` | | | T (Al18Mg3Cr2) | | -238.5 kJ/mol (basis unstated) | 298.15 | DFT | | | [1] Cui 2017 | Table 3, p. 4, row 3; `ORC-BO7Z7LUP7R.c042ff` | | ## Other properties ### Phase equilibrium (16) Table: Phase equilibrium, Al–Cr–Mg system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase composition | | 673.15 | AlCr2 + γ\_L + Al4Cr + T + Al3Mg2 + fcc_A1; _AlCr2: Al 0.381, Cr 0.618, Mg 4.900e-4; γ\_L: Al 0.599, Cr 0.399, Mg 0.0015; Al4Cr: Al 0.795, Cr 0.205, Mg 4.900e-4; T: Al 0.775, Cr 0.087, Mg 0.138; Al3Mg2: Al 0.625, Cr 0.001, Mg 0.374; fcc_A1: Al 0.892, Cr 0.001, Mg 0.107_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 16; `ORC-K37XUKNW7Y` | | | Phase composition | | 673.15 | fcc_A1 + Al3Mg2 + T; _fcc_A1: Al 0.88, Cr 0, Mg 0.12; Al3Mg2: Al 0.619, Cr 0, Mg 0.381; T: Al 0.769, Cr 0.087, Mg 0.144_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 4; `ORC-IAP6TQZ74R` | | | Phase composition | | 673.15 | fcc_A1 + Al3Mg2 + T; _fcc_A1: Al 0.881, Cr 0, Mg 0.119; Al3Mg2: Al 0.618, Cr 0, Mg 0.382; T: Al 0.769, Cr 0.087, Mg 0.144_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 6; `ORC-IZY4KSAKKT` | | | Phase composition | | 673.15 | fcc_A1 + Al3Mg2 + T; _fcc_A1: Al 0.877, Cr 0, Mg 0.122; Al3Mg2: Al 0.618, Cr 0, Mg 0.382; T: Al 0.766, Cr 0.087, Mg 0.147_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 5; `ORC-PWE7EELK3N` | | | Phase composition | | 673.15 | fcc_A1 + Al7Cr; _fcc_A1: Al 0.997, Cr 0.003, Mg 0; Al7Cr: Al 0.863, Cr 0.137, Mg 0_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 1; `ORC-MUX2MX7WJ3` | | | Phase composition | | 673.15 | fcc_A1 + T; _fcc_A1: Al 0.909, Cr 0.001, Mg 0.09; T: Al 0.77, Cr 0.089, Mg 0.141_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 3; `ORC-6GL422HTSL` | | | Phase composition | | 673.15 | fcc_A1 + T + Al7Cr; _fcc_A1: Al 0.981, Cr 0.003, Mg 0.016; T: Al 0.782, Cr 0.09, Mg 0.129; Al7Cr: Al 0.859, Cr 0.139, Mg 0.002_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 2; `ORC-OHXVBW4MSW` | | | Phase composition | | 673.15 | γ\_L + Al4Cr + Al7Cr + T + fcc_A1; _γ\_L: Al 0.674, Cr 0.326, Mg 1.000e-4; Al4Cr: Al 0.784, Cr 0.209, Mg 0.008; Al7Cr: Al 0.855, Cr 0.139, Mg 0.005; T: Al 0.778, Cr 0.086, Mg 0.136; fcc_A1: Al 0.905, Cr 0.00144, Mg 0.093_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 14; `ORC-BRBEN75QOF` | | | Phase composition | | 673.15 | γ\_L + Al4Cr + T + Al3Mg2 + fcc_A1; _γ\_L: Al 0.685, Cr 0.314, Mg 0.001; Al4Cr: Al 0.768, Cr 0.211, Mg 0.02; T: Al 0.777, Cr 0.0861, Mg 0.137; Al3Mg2: Al 0.619, Cr 6.000e-4, Mg 0.38; fcc_A1: Al 0.914, Cr 4.000e-4, Mg 0.086_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 15; `ORC-2TC2BYYDQE` | | | Phase composition | | 723.15 | fcc_A1 + Al3Mg2 + T; _fcc_A1: Al 0.823, Cr 0, Mg 0.177; Al3Mg2: Al 0.615, Cr 0, Mg 0.385; T: Al 0.767, Cr 0.088, Mg 0.144_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 8; `ORC-VHEK5L6EAL` | | | Phase composition | | 723.15 | fcc_A1 + Al3Mg2 + T; _fcc_A1: Al 0.864, Cr 0, Mg 0.136; Al3Mg2: Al 0.617, Cr 0, Mg 0.382; T: Al 0.768, Cr 0.088, Mg 0.144_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 7; `ORC-WUXPXYBQG3` | | | Phase composition | | 723.15 | fcc_A1 + Al7Cr; _fcc_A1: Al 0.996, Cr 0.004, Mg 0; Al7Cr: Al 0.861, Cr 0.139, Mg 0_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 10; `ORC-XD4TQP57UM` | | | Phase composition | | 723.15 | fcc_A1 + T; _fcc_A1: Al 0.919, Cr 0.001, Mg 0.08; T: Al 0.773, Cr 0.089, Mg 0.139_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 9; `ORC-LPWBSLCL7Q` | | | Phase composition | | 723.15 | fcc_A1 + T + Al7Cr; _fcc_A1: Al 0.988, Cr 0.002, Mg 0.01; T: Al 0.791, Cr 0.089, Mg 0.12; Al7Cr: Al 0.859, Cr 0.138, Mg 0.002_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 11; `ORC-BIUULZ2DHH` | | | Phase composition | | 773.15 | T + Liquid + Al3Mg2; _T: Al 0.773, Cr 0.086, Mg 0.141_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 12; `ORC-MUEDNS3X33` | | | Phase composition | | 773.15 | T + fcc_A1 + Liquid + Al3Mg2; _T: Al 0.773, Cr 0.087, Mg 0.14; fcc_A1: Al 0.863, Cr 4.500e-4, Mg 0.136_ | experimental | [1] Cui 2017 | Table 5, p. 11, row 13; `ORC-WTPKTSWTUK` | | ### Crystal structure (3) Table: Crystal structure, Al–Cr–Mg system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | lattice unspecified axis; _printed: Lattice parameters_ | 14.5 Å | 298.15 | T (Al18Mg3Cr2); _alloy: Cr 0.086957, Mg 0.130435_ | model | [1] Cui 2017; _cites Kerimov 1987_ [doi](https://doi.org/10.1016/0022-5088%2887%2990240-2) | Table 3, p. 4, row 2; `ORC-KFJBR663DK.02ec86` | | | lattice unspecified axis; _printed: Lattice parameters_ | 14.5 Å | 298.15 | T (Al18Mg3Cr2); _alloy: Cr 0.086957, Mg 0.130435_ | unspecified | [1] Cui 2017; _cites Ohnishi 2017_ | Table 3, p. 4, row 1; `ORC-LFKSQXQNN7.b2083e` | | | lattice unspecified axis; _printed: Lattice parameters_ | 14.5 Å | 298.15 | T (Al18Mg3Cr2); _alloy: Cr 0.086957, Mg 0.130435_ | DFT | [1] Cui 2017 | Table 3, p. 4, row 3; `ORC-YMF32PK6ZS.ddc9b1` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Senlin Cui, In-Ho Jung, Junghwan Kim, Jinghua Xin, A coupled experimental and thermodynamic study of the Al-Cr and Al-Cr-Mg systems, Journal of Alloys and Compounds 698, 1038-1057 (2017). [doi:10.1016/j.jallcom.2016.12.298](https://doi.org/10.1016/j.jallcom.2016.12.298) ## 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/).