Al–Mg–Si system

59 accepted literature values from 1 paper(s) (experimental 22, model 37); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	22
model	37

Accepted values by property group
Property group	Values
invariant reaction	59

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Mg–Si system (59)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1218.75	L -> Mg2Si + Si	L: Si 0.53; Mg2Si: Si 0.333; Si: Si 1	experimental	[1] Tang 2012 cites Geffken 1968	Table 3, p. 5, row 30 report
1218.75	L -> Mg2Si + Si	L: Si 0.535; Mg2Si: Si 0.333; Si: Si 1	model	[1] Tang 2012 cites Yuan 2009 doi	Table 3, p. 5, row 28 report
1217.95	L -> Mg2Si + Si	L: Si 0.5296; Mg2Si: Si 0.333; Si: Si 1	model	[1] Tang 2012	Table 3, p. 5, row 29 report
911.75	L -> (Mg)-hcp + Mg2Si	L: Si 0.0135; (Mg)-hcp: Si 0; Mg2Si: Si 0.333	model	[1] Tang 2012 cites Yuan 2009 doi	Table 3, p. 5, row 25 report
910.15	L -> (Mg)-hcp + Mg2Si	L: Si 0.013; (Mg)-hcp: Si 0; Mg2Si: Si 0.333	experimental	[1] Tang 2012 cites Geffken 1968	Table 3, p. 5, row 27 report
908.15	L -> (Mg)-hcp + Mg2Si	L: Si 0.0173; (Mg)-hcp: Si 0; Mg2Si: Si 0.333	model	[1] Tang 2012	Table 3, p. 5, row 26 report
870.15	L -> (Al)-fcc + Mg2Si	L: Si 0.039	experimental	[1] Tang 2012 cites Barabash 2001 doi	Table 4, p. 6, row 6 report
868.15	L -> (Al)-fcc + Mg2Si	L: Al 0.871, Mg 0.083, Si 0.046	experimental	[1] Tang 2012 cites Hanson 2012	Table 4, p. 6, row 5 report
868.15	L -> (Al)-fcc + Mg2Si		experimental	[1] Tang 2012 cites Feufel 1997 doi	Table 4, p. 6, row 3 report
867.9	L -> (Al)-fcc + Mg2Si	L: Al 0.8571, Mg 0.1046, Si 0.0383	model	[1] Tang 2012	Table 4, p. 6, row 1 report
867.15	L -> (Al)-fcc + Mg2Si	L: Al 0.853, Mg 0.108, Si 0.039	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 7 report
866.8	L -> (Al)-fcc + Mg2Si	L: Al 0.8561, Mg 0.1031, Si 0.0408	model	[1] Tang 2012	Table 4, p. 6, row 2 report
866.15	L -> (Al)-fcc + Mg2Si		experimental	[1] Tang 2012 cites Schurmann 1977	Table 4, p. 6, row 4 report
850.65	L -> (Al)-fcc + Si	L: Si 0.1204; (Al)-fcc: Si 0.017; Si: Si 1	model	[1] Tang 2012	Table 3, p. 5, row 1 report
850.25	L -> (Al)-fcc + Si	L: Si 0.122; Si: Si 1	experimental	[1] Tang 2012 cites Hayes 1993 doi	Table 3, p. 5, row 3 report
850.15	L -> (Al)-fcc + Si	L: Si 0.121; (Al)-fcc: Si 0.0175; Si: Si 1	model	[1] Tang 2012	Table 3, p. 5, row 2 report
833.6	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.8066, Mg 0.0549, Si 0.1385	model	[1] Tang 2012	Table 4, p. 6, row 8 report
833.15	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.823, Mg 0.051, Si 0.126	experimental	[1] Tang 2012 cites Birchenall 1980 doi	Table 4, p. 6, row 11 report
832.5	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.8068, Mg 0.0547, Si 0.1385	model	[1] Tang 2012	Table 4, p. 6, row 9 report
831.15	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.805, Mg 0.049, Si 0.146	experimental	[1] Tang 2012 cites Hanson 2012	Table 4, p. 6, row 13 report
831.15	L -> (Al)-fcc + (Si) + Mg2Si		experimental	[1] Tang 2012 cites Feufel 1997 doi	Table 4, p. 6, row 10 report
830.15	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.815, Mg 0.054, Si 0.131	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 14 report
823.15	L -> (Al)-fcc + (Si) + Mg2Si	L: Al 0.811, Mg 0.048, Si 0.141	experimental	[1] Tang 2012 cites Schurmann 1977	Table 4, p. 6, row 12 report
735.65	L -> γ + Mg2Si	L: Al 0.461, Mg 0.538, Si 0.001	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 17 report
733.5	L -> γ + Mg2Si	L: Al 0.4619, Mg 0.5378, Si 3.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 16 report
733.2	L -> γ + Mg2Si	L: Al 0.4576, Mg 0.542, Si 4.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 15 report
724.6	L -> β + Mg2Si	L: Al 0.6114, Mg 0.3884, Si 2.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 19 report
724.35	L -> β + Mg2Si	L: Al 0.61, Mg 0.389, Si 0.001	model	[1] Tang 2012 cites Sebkova 1979	Table 4, p. 6, row 20 report
724.3	L -> β + Mg2Si	L: Al 0.6114, Mg 0.3884, Si 2.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 18 report
723.95	L -> (Al)-fcc + β	L: Mg 0.3639; (Al)-fcc: Mg 0.166; β: Mg 0.3886	model	[1] Tang 2012	Table 3, p. 5, row 5 report
723.85	L -> (Al)-fcc + β	L: Mg 0.3665; (Al)-fcc: Mg 0.1689; β: Mg 0.3886	model	[1] Tang 2012	Table 3, p. 5, row 4 report
723.8	L -> (Al)-fcc + β + Mg2Si	L: Al 0.6358, Mg 0.364, Si 2.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 22 report
723.7	L -> (Al)-fcc + β + Mg2Si	L: Al 0.6331, Mg 0.3666, Si 1.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 21 report
723.55	L -> γ	L: Mg 0.4194; γ: Mg 0.4677; β: Mg 0.3886	model	[1] Tang 2012	Table 3, p. 5, row 8 report
723.5	L -> β + γ + Mg2Si	L: Al 0.5812, Mg 0.4186, Si 2.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 28 report
723.15	L -> (Al)-fcc + β + Mg2Si	L: Al 0.64, Mg 0.363, Si 0.001	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 26 report
723.15	L -> γ	L: Mg 0.4209; γ: Mg 0.4683; β: Mg 0.3886	model	[1] Tang 2012	Table 3, p. 5, row 7 report
723.1	L -> β + γ + Mg2Si	L: Al 0.5795, Mg 0.4204, Si 1.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 27 report
722.85	L -> (Al)-fcc + β	L: Mg 0.368; (Al)-fcc: Mg 0.165; β: Mg 0.385	experimental	[1] Tang 2012 cites Schuermann 1981	Table 3, p. 5, row 6 report
722.65	L -> γ	L: Mg 0.424; γ: Mg 0.48; β: Mg 0.3886	experimental	[1] Tang 2012 cites Liang 1998	Table 3, p. 5, row 9 report
722.15	L -> β + γ + Mg2Si	L: Al 0.574, Mg 0.425, Si 0.001	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 30 report
721.15	L -> (Al)-fcc + β + Mg2Si	L: Al 0.6603, Mg 0.339, Si 7.000e-4	experimental	[1] Tang 2012 cites Hanson 2012	Table 4, p. 6, row 25 report
721.15	L -> β + γ + Mg2Si		experimental	[1] Tang 2012 cites Valdes 2006 doi	Table 4, p. 6, row 29 report
721.15	L -> (Al)-fcc + β + Mg2Si		experimental	[1] Tang 2012 cites Schurmann 1977	Table 4, p. 6, row 23 report
711.55	L -> γ + (Mg)-hcp	L: Mg 0.7037; γ: Mg 0.6211; (Mg)-hcp: Mg 0.8831	model	[1] Tang 2012	Table 3, p. 5, row 10 report
711.45	L -> γ + (Mg)-hcp	L: Mg 0.6974; γ: Mg 0.6112; (Mg)-hcp: Mg 0.8663	model	[1] Tang 2012	Table 3, p. 5, row 11 report
711.4	L -> (Mg)-hcp + γ + Mg2Si	L: Al 0.3015, Mg 0.698, Si 5.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 32 report
711.4	L -> (Mg)-hcp + γ + Mg2Si	L: Al 0.2952, Mg 0.7043, Si 5.000e-4	model	[1] Tang 2012	Table 4, p. 6, row 31 report
711.15	L -> γ + (Mg)-hcp	L: Mg 0.692; γ: Mg 0.595; (Mg)-hcp: Mg 0.885	experimental	[1] Tang 2012 cites Schuermann 1981	Table 3, p. 5, row 12 report
709.15	L -> (Mg)-hcp + γ + Mg2Si	L: Al 0.3, Mg 0.699, Si 0.001	experimental	[1] Tang 2012 cites Valdes 2006 doi	Table 4, p. 6, row 34 report
708.75	L -> (Mg)-hcp + γ + Mg2Si	L: Al 0.309, Mg 0.69, Si 0.001	model	[1] Tang 2012 cites Kumar 2003	Table 4, p. 6, row 35 report
708.15	L -> (Al)-fcc + β + Mg2Si	L: Al 0.653, Mg 0.345, Si 0.002	experimental	[1] Tang 2012 cites Rokhlin 1988	Table 4, p. 6, row 24 report
707.15	L -> (Mg)-hcp + γ + Mg2Si	L: Al 0.323, Mg 0.675, Si 0.002	experimental	[1] Tang 2012 cites Schurmann 1977	Table 4, p. 6, row 33 report
701.05	β + γ -> ε	β: Mg 0.3886; γ: Mg 0.4828; ε: Mg 0.4339	model	[1] Tang 2012	Table 3, p. 5, row 13 report
700.95	β + γ -> ε	β: Mg 0.3836; γ: Mg 0.4823; ε: Mg 0.4339	model	[1] Tang 2012	Table 3, p. 5, row 14 report
700.15	β + γ -> ε	β: Mg 0.3836; γ: Mg 0.482; ε: Mg 0.4339	experimental	[1] Tang 2012 cites Czeppe 2003 doi	Table 3, p. 5, row 15 report
524.25	ε -> β + γ	ε: Mg 0.4339; β: Mg 0.3836; γ: Mg 0.5494	model	[1] Tang 2012	Table 3, p. 5, row 17 report
523.45	ε -> β + γ	ε: Mg 0.4339; β: Mg 0.3836; γ: Mg 0.5505	model	[1] Tang 2012	Table 3, p. 5, row 16 report
523.15	ε -> β + γ	ε: Mg 0.4339; β: Mg 0.3836; γ: Mg 0.536	experimental	[1] Tang 2012 cites Liang 1998	Table 3, p. 5, row 18 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012). doi:10.1016/j.tca.2011.10.017

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). doi: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). doi: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.

@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}
}