Mg–Tb system

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

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (9) · papers (bibliography) · Markdown

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

Accepted values by property group
Property group	Values
invariant reaction	14

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
MgTb-06Guo.tdb	C. Guo, Z. Du, J. Alloys Compd., 422, 102-8(2006). doi:10.1016/j.jallcom.2005.11.060	`69acc44761df0f6c71ca54afa6acde7a7b2babc277a4b4056bbc38f7174c3d16`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
MgTb-06Guo.tdb	1127.85	LIQUID (x(Tb) 0.46966) + B2_BCC#2 (x(Tb) 0.51304) + B2_BCC (x(Tb) 0.60103)
MgTb-06Guo.tdb	1127.85	LIQUID (x(Tb) 0.46966) + B2_BCC (x(Tb) 0.51304) + B2_BCC#2 (x(Tb) 0.60103)
MgTb-06Guo.tdb	992.86	LIQUID (x(Tb) 0.28577) + MG2TB_C14 (x(Tb) 0.33055) + B2_BCC (x(Tb) 0.4723)
MgTb-06Guo.tdb	992.86	LIQUID (x(Tb) 0.28577) + MG2TB_C14 (x(Tb) 0.33055) + B2_BCC (x(Tb) 0.4723)
MgTb-06Guo.tdb	942.44	B2_BCC (x(Tb) 0.52475) + B2_BCC#2 (x(Tb) 0.75648) + HCP_A3 (x(Tb) 0.89908)
MgTb-06Guo.tdb	942.44	B2_BCC (x(Tb) 0.52475) + B2_BCC#2 (x(Tb) 0.75648) + HCP_A3 (x(Tb) 0.89908)
MgTb-06Guo.tdb	877.78	LIQUID (x(Tb) 0.17006) + MG3M_D03 (x(Tb) 0.23352) + MG2TB_C14 (x(Tb) 0.32045)
MgTb-06Guo.tdb	827.77	LIQUID (x(Tb) 0.12149) + MG24TB5_A12 (x(Tb) 0.17241) + MG3M_D03 (x(Tb) 0.21033)
MgTb-06Guo.tdb	827.77	LIQUID (x(Tb) 0.12136) + MG24TB5_A12 (x(Tb) 0.17241) + MG3M_D03 (x(Tb) 0.21023)
MgTb-06Guo.tdb	817.81	LIQUID (x(Tb) 0.10926) + MG5M (x(Tb) 0.16667) + MG24TB5_A12 (x(Tb) 0.17241)
MgTb-06Guo.tdb	817.81	LIQUID (x(Tb) 0.10907) + MG5M (x(Tb) 0.16667) + MG24TB5_A12 (x(Tb) 0.17241)
MgTb-06Guo.tdb	803.32	HCP_A3 (x(Tb) 0.01987) + LIQUID (x(Tb) 0.0945) + MG5M (x(Tb) 0.16667)
MgTb-06Guo.tdb	803.32	HCP_A3 (x(Tb) 0.01981) + LIQUID (x(Tb) 0.09439) + MG5M (x(Tb) 0.16667)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Mg–Tb system (14)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1128	liq. + bcc(Tb) -> MgTb	liq.: Tb 0.47; bcc(Tb): Tb 0.61; MgTb: Tb 0.5	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 12 report
1128	liq. + bcc(Tb) -> MgTb	liq.: Tb 0.4697; bcc(Tb): Tb 0.601; MgTb: Tb 0.513	model	[1] Guo 2006	Table 2, p. 5, row 11 report
993	liq. + MgTb -> Mg2Tb	liq.: Tb 0.27; MgTb: Tb 0.46; Mg2Tb: Tb 0.33	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 10 report
993	liq. + MgTb -> Mg2Tb	liq.: Tb 0.2858; MgTb: Tb 0.4723; Mg2Tb: Tb 0.3306	model	[1] Guo 2006	Table 2, p. 5, row 9 report
943	bcc(Tb) -> hcp(Tb) + MgTb	bcc(Tb): Tb 0.7559; hcp(Tb): Tb 0.8982; MgTb: Tb 0.5248	model	[1] Guo 2006	Table 2, p. 5, row 13 report
943	bcc(Tb) -> hcp(Tb) + MgTb	bcc(Tb): Tb 0.72; hcp(Tb): Tb 0.875; MgTb: Tb 0.52	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 14 report
878	liq. + Mg2Tb -> Mg3Tb	liq.: Tb 0.1701; Mg2Tb: Tb 0.3205; Mg3Tb: Tb 0.2335	model	[1] Guo 2006	Table 2, p. 5, row 7 report
878	liq. + Mg2Tb -> Mg3Tb	liq.: Tb 0.17; Mg2Tb: Tb 0.32; Mg3Tb: Tb 0.25	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 8 report
828	liq. + Mg3Tb -> Mg24Tb5	liq.: Tb 0.12; Mg3Tb: Tb 0.22; Mg24Tb5: Mg 0.827586, Tb 0.172414	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 6 report
828	liq. + Mg3Tb -> Mg24Tb5	liq.: Tb 0.1215; Mg3Tb: Tb 0.2103; Mg24Tb5: Mg 0.827586, Tb 0.172414	model	[1] Guo 2006	Table 2, p. 5, row 5 report
818	liq. + Mg24Tb5 -> Mg5Tb	liq.: Tb 0.105; Mg24Tb5: Mg 0.827586, Tb 0.172414; Mg5Tb: Mg 0.833333, Tb 0.166667	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 4 report
818	liq. + Mg24Tb5 -> Mg5Tb	liq.: Tb 0.1092; Mg24Tb5: Mg 0.827586, Tb 0.172414; Mg5Tb: Mg 0.833333, Tb 0.166667	model	[1] Guo 2006	Table 2, p. 5, row 3 report
803	eutectic: liq. -> Mg5Tb + hcp	liq.: Tb 0.0943; Mg5Tb: Mg 0.833333, Tb 0.166667; hcp: Tb 0.0196	model	[1] Guo 2006	Table 2, p. 5, row 1 report
803	eutectic: liq. -> Mg5Tb + hcp	liq.: Tb 0.095; Mg5Tb: Mg 0.833333, Tb 0.166667; hcp: Tb 0.04	experimental	[1] Guo 2006 cites Saccone 1993	Table 2, p. 5, row 2 report

Sources

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

Cuiping Guo, Zhenmin Du, Thermodynamic optimization of the Mg–Tb and Mg–Yb systems, Journal of Alloys and Compounds 422, 102-108 (2006). doi:10.1016/j.jallcom.2005.11.060

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}
}