Cd–Mg system

19 accepted literature values from 1 paper(s) (experimental 6, model 6, unspecified 7); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (5) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	6
model	6
unspecified	7

Accepted values by property group
Property group	Values
invariant reaction	8
phase transition	4
crystal structure	7

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
CdMg-12Ren.tdb	X. Ren, C. Li, C. Guo, Z.Du, Thermochim. Acta, 534, 1-8(2012). doi:10.1016/j.tca.2012.01.016	`2a1ea62b541b4fa1605e0316a590912a72f634b7e451479058fa25fe374d50e9`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CdMg-12Ren.tdb	459.79	HCP_4SL#2 (x(Mg) 0.58282) + HCP_4SL (x(Mg) 0.6427) + HCP_A3 (x(Mg) 0.6446)
CdMg-12Ren.tdb	459.79	HCP_4SL#2 (x(Mg) 0.58282) + HCP_4SL (x(Mg) 0.6427) + HCP_4SL#3 (x(Mg) 0.6446)
CdMg-12Ren.tdb	405.41	HCP_4SL (x(Mg) 0.31908) + HCP_4SL#2 (x(Mg) 0.31908) + HCP_4SL#3 (x(Mg) 0.39544)
CdMg-12Ren.tdb	397.5	HCP_4SL#3 (x(Mg) 0.31272) + HCP_4SL (x(Mg) 0.31834) + HCP_4SL#2 (x(Mg) 0.38878)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Cd–Mg system (8)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
526.74	congruent transformation: Hcp_A3 -> AB3	Hcp_A3: Mg 0.502; AB3: Mg 0.502	model	[1] Ren 2012	Table 4, p. 6, row 1 report
526	congruent transformation: Hcp_A3 -> AB3	Hcp_A3: Mg 0.5; AB3: Mg 0.5	experimental	[1] Ren 2012 cites Moser 1984 doi	Table 4, p. 6, row 2 report
459.78	peritectoid: Hcp_A3 + AB3 -> AB3	Hcp_A3: Mg 0.644; AB3: Mg 0.643	model	[1] Ren 2012	Table 4, p. 6, row 3 report
459	peritectoid		experimental	[1] Ren 2012	p. 2 report	The ordered phase CdMg forms at 526 K through congruent transformation, and then CdMg3 and Cd3 Mg form at 459 and 398 K respectively through peritectoid reactions.
459	peritectoid: Hcp_A3 + AB3 -> AB3	Hcp_A3: Mg 0.621; AB3: Mg 0.621	experimental	[1] Ren 2012 cites Moser 1984 doi	Table 4, p. 6, row 4 report
398	peritectoid: Hcp_A3 + AB3 -> AB3	Hcp_A3: Mg 0.33; AB3: Mg 0.338	experimental	[1] Ren 2012 cites Moser 1984 doi	Table 4, p. 6, row 6 report
398	peritectoid		experimental	[1] Ren 2012	p. 2 report	The ordered phase CdMg forms at 526 K through congruent transformation, and then CdMg3 and Cd3 Mg form at 459 and 398 K respectively through peritectoid reactions.
397.5	peritectoid: Hcp_A3 + AB3 -> AB3	Hcp_A3: Mg 0.313; AB3: Mg 0.318	model	[1] Ren 2012	Table 4, p. 6, row 5 report

Other properties

Phase transition (4)

Phase transition, Cd–Mg system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	357 K	357	other	model	[1] Ren 2012	p. 6 report	The peaks in the heat capacities of the ordered phases (Cd3 Mg, CdMg and CdMg3 ) are found to appear at about 357 K, 526 K and 424 K respectively, which are just the critical temperatures of the order-disorder phase transitions.
Phase transition	424 K	424	other	model	[1] Ren 2012	p. 6 report	The peaks in the heat capacities of the ordered phases (Cd3 Mg, CdMg and CdMg3 ) are found to appear at about 357 K, 526 K and 424 K respectively, which are just the critical temperatures of the order-disorder phase transitions.
Phase transition	526 K	526	congruent transformation	experimental	[1] Ren 2012	p. 2 report	The ordered phase CdMg forms at 526 K through congruent transformation, and then CdMg3 and Cd3 Mg form at 459 and 398 K respectively through peritectoid reactions.
Phase transition	526 K	526	other	model	[1] Ren 2012	p. 6 report	The peaks in the heat capacities of the ordered phases (Cd3 Mg, CdMg and CdMg3 ) are found to appear at about 357 K, 526 K and 424 K respectively, which are just the critical temperatures of the order-disorder phase transitions.

Crystal structure (7)

Crystal structure, Cd–Mg system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	6.23 Å	298.15	Cd3Mg	unspecified	[1] Ren 2012	Table 1, p. 2, row 2 report
Lattice a	5 Å	298.15	CdMg	unspecified	[1] Ren 2012	Table 1, p. 2, row 3 report
Lattice a	6.31 Å	298.15	CdMg3	unspecified	[1] Ren 2012	Table 1, p. 2, row 4 report
Lattice b	3.22 Å	298.15	CdMg	unspecified	[1] Ren 2012	Table 1, p. 2, row 3 report
Lattice c	5.04 Å	298.15	Cd3Mg	unspecified	[1] Ren 2012	Table 1, p. 2, row 2 report
Lattice c	5.27 Å	298.15	CdMg	unspecified	[1] Ren 2012	Table 1, p. 2, row 3 report
Lattice c	5.07 Å	298.15	CdMg3	unspecified	[1] Ren 2012	Table 1, p. 2, row 4 report

Sources

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

Xin Ren, Changrong Li, Cuiping Guo, Zhenmin Du, A thermodynamic assessment of the Cd–Mg system, Thermochimica Acta 534, 1-8 (2012). doi:10.1016/j.tca.2012.01.016

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-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}