Mg–Pr system

103 accepted literature values from 4 paper(s) (experimental 45, model 47, unspecified 11); 3 calculated phase diagram(s). 7 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	45
model	47
unspecified	11

Accepted values by property group
Property group	Values
invariant reaction	78
phase transition	9
formation	5
crystal structure	11

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
MgPr-05Guo.tdb	C. Guo, Z. Du, J. Alloys Compd., 399, 183-88(2005). doi:10.1016/j.jallcom.2005.03.033	`663c0d9edf4eb1066ea9fb5e1acb1dd97e3ec01a827790b973ad0b2f3c23edce`	viewer · TDB · JSON
MgPr-08Guo.tdb	C. Guo, Z. Du, C.Li, Calphad, 32, 177-87(2008). doi:10.1016/j.calphad.2007.05.007	`33b8964cbc88b29cc3c782bff0910722e4378f6dc26f273052264bbd89a54d73`	viewer · TDB · JSON
MgPr-15Wan.tdb	P. Wang, R. Schmid-Fetzer, Comput. Mater. Sci., 104, 138-42(2015). doi:10.1016/j.commatsci.2014.11.050	`43684dde82c30e772cf1df6053c9c4af9ac378d9d369e6595a906903ac0ade46`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
MgPr-05Guo.tdb	1068	DHCP (x(Pr) 1) + MGPR_B2 (x(Pr) 1) + BCC_A2 (x(Pr) 1)
MgPr-05Guo.tdb	1012.71	MG3PR_D03 (x(Pr) 0.24952) + MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.34637)
MgPr-05Guo.tdb	1006.75	MGPR_B2 (x(Pr) 0.51601) + LIQUID (x(Pr) 0.59909) + BCC_A2 (x(Pr) 0.63957)
MgPr-05Guo.tdb	1006.75	MGPR_B2 (x(Pr) 0.51601) + LIQUID (x(Pr) 0.59909) + BCC_A2 (x(Pr) 0.63957)
MgPr-05Guo.tdb	993.5	MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.3888) + MGPR_B2 (x(Pr) 0.48132)
MgPr-05Guo.tdb	993.5	MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.3888) + MGPR_B2 (x(Pr) 0.48132)
MgPr-05Guo.tdb	932.78	MG3PR_D03 (x(Pr) 0.24987) + MG2PR_C15 (x(Pr) 0.33333) + MGPR_B2 (x(Pr) 0.4809)
MgPr-05Guo.tdb	932.78	MG3PR_D03 (x(Pr) 0.24987) + MG2PR_C15 (x(Pr) 0.33333) + MGPR_B2 (x(Pr) 0.4809)
MgPr-05Guo.tdb	843.87	LIQUID (x(Pr) 0.08245) + MG41PR5 (x(Pr) 0.10754) + MG3PR_D03 (x(Pr) 0.17988)
MgPr-05Guo.tdb	839.71	LIQUID (x(Pr) 0.07644) + MG12PR_D2B (x(Pr) 0.07692) + MG41PR5 (x(Pr) 0.10723)
MgPr-05Guo.tdb	839.71	LIQUID (x(Pr) 0.07632) + MG12PR_D2B (x(Pr) 0.07692) + MG41PR5 (x(Pr) 0.10722)
MgPr-05Guo.tdb	837.95	HCP_A3 (x(Pr) 0.00141) + LIQUID (x(Pr) 0.06557) + MG12PR_D2B (x(Pr) 0.07692)
MgPr-05Guo.tdb	837.95	HCP_A3 (x(Pr) 0.0014) + LIQUID (x(Pr) 0.06539) + MG12PR_D2B (x(Pr) 0.07692)
MgPr-05Guo.tdb	783.34	MGPR_B2 (x(Pr) 0.52271) + BCC_A2 (x(Pr) 0.8065) + DHCP (x(Pr) 0.91353)
MgPr-05Guo.tdb	783.34	MGPR_B2 (x(Pr) 0.52271) + BCC_A2 (x(Pr) 0.8065) + DHCP (x(Pr) 0.91353)
MgPr-08Guo.tdb	1007.88	B2_BCC (x(Pr) 0.5249) + LIQUID (x(Pr) 0.60968) + B2_BCC#2 (x(Pr) 0.66017)
MgPr-08Guo.tdb	1007.88	B2_BCC (x(Pr) 0.5249) + LIQUID (x(Pr) 0.60968) + B2_BCC#2 (x(Pr) 0.66017)
MgPr-08Guo.tdb	1004.43	MG3PR_D03 (x(Pr) 0.24972) + MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.35601)
MgPr-08Guo.tdb	1004.43	MG3PR_D03 (x(Pr) 0.24972) + MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.35601)
MgPr-08Guo.tdb	995.34	MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.37895) + B2_BCC (x(Pr) 0.45989)
MgPr-08Guo.tdb	995.34	MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.37895) + B2_BCC (x(Pr) 0.45989)
MgPr-08Guo.tdb	940.75	MG3PR_D03 (x(Pr) 0.24988) + MG2PR_C15 (x(Pr) 0.33333) + B2_BCC (x(Pr) 0.4693)
MgPr-08Guo.tdb	940.75	MG3PR_D03 (x(Pr) 0.24988) + MG2PR_C15 (x(Pr) 0.33333) + B2_BCC (x(Pr) 0.46933)
MgPr-08Guo.tdb	940.75	MG3PR_D03 (x(Pr) 0.24988) + MG2PR_C15 (x(Pr) 0.33333) + B2_BCC (x(Pr) 0.46933)
MgPr-08Guo.tdb	848.94	LIQUID (x(Pr) 0.08255) + MG41PR5 (x(Pr) 0.1087) + MG3PR_D03 (x(Pr) 0.22483)
MgPr-08Guo.tdb	837.44	LIQUID (x(Pr) 0.06762) + MG12PR_D2B (x(Pr) 0.07692) + MG41PR5 (x(Pr) 0.1087)
MgPr-08Guo.tdb	837.03	HCP_A3 (x(Pr) 6.400e-4) + LIQUID (x(Pr) 0.06598) + MG12PR_D2B (x(Pr) 0.07692)
MgPr-08Guo.tdb	783.19	B2_BCC (x(Pr) 0.52736) + B2_BCC#2 (x(Pr) 0.8097) + DHCP (x(Pr) 0.92786)
MgPr-08Guo.tdb	783.19	B2_BCC (x(Pr) 0.52736) + B2_BCC#2 (x(Pr) 0.8097) + DHCP (x(Pr) 0.92786)
MgPr-15Wan.tdb	1012.8	MG3PR_D03 (x(Pr) 0.25) + MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.35045)
MgPr-15Wan.tdb	1010.81	MGPR_B2 (x(Pr) 0.49915) + LIQUID (x(Pr) 0.60679) + BCC_A2 (x(Pr) 0.69792)
MgPr-15Wan.tdb	998.43	MG2PR_C15 (x(Pr) 0.33333) + LIQUID (x(Pr) 0.38688) + MGPR_B2 (x(Pr) 0.49262)
MgPr-15Wan.tdb	942.78	MG3PR_D03 (x(Pr) 0.25) + MG2PR_C15 (x(Pr) 0.33333) + MGPR_B2 (x(Pr) 0.49306)
MgPr-15Wan.tdb	862.94	LIQUID (x(Pr) 0.08789) + MG41PR5 (x(Pr) 0.1087) + MG3PR_D03 (x(Pr) 0.25)
MgPr-15Wan.tdb	852.72	LIQUID (x(Pr) 0.06927) + MG12PR_D2B (x(Pr) 0.07692) + MG41PR5 (x(Pr) 0.1087)
MgPr-15Wan.tdb	852.72	LIQUID (x(Pr) 0.06927) + MG12PR_D2B (x(Pr) 0.07692) + MG41PR5 (x(Pr) 0.1087)
MgPr-15Wan.tdb	849.8	HCP_A3 (x(Pr) 0.00237) + LIQUID (x(Pr) 0.05805) + MG12PR_D2B (x(Pr) 0.07692)
MgPr-15Wan.tdb	849.8	HCP_A3 (x(Pr) 0.00237) + LIQUID (x(Pr) 0.05802) + MG12PR_D2B (x(Pr) 0.07692)
MgPr-15Wan.tdb	782.6	MGPR_B2 (x(Pr) 0.49996) + BCC_A2 (x(Pr) 0.80183) + DHCP (x(Pr) 0.93225)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull MgPr-05Guo · CALPHAD hull MgPr-08Guo

Invariant reactions (literature)

Invariant reactions reported in the literature for the Mg–Pr system (78)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1093.15	congruent melting: Liquid = PrMg3	Liquid: Mg 0.75, Pr 0.25; PrMg3: Mg 0.75, Pr 0.25	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 15 report
1063.15	congruent melting: Liquid = PrMg3	Liquid: Mg 0.75, Pr 0.25; PrMg3: Mg 0.75, Pr 0.25	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 16 report
1063.15	congruent melting: Liquid = PrMg3	Liquid: Mg 0.75, Pr 0.25; PrMg3: Mg 0.75, Pr 0.25	model	[1] Wang 2015	Table 3, p. 4, row 18 report
1062.75	congruent melting: Liquid = PrMg3	Liquid: Mg 0.75, Pr 0.25; PrMg3: Mg 0.75, Pr 0.25	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 17 report
1043.15	congruent melting: Liquid = PrMg	Liquid: Mg 0.5, Pr 0.5; PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 33 report
1038.15	congruent melting: Liquid = PrMg	Liquid: Mg 0.5, Pr 0.5; PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 34 report
1038.05	congruent melting: Liquid = PrMg	Liquid: Mg 0.5, Pr 0.5; PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 35 report
1035.85	congruent melting: Liquid = PrMg	Liquid: Mg 0.5, Pr 0.5; PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015	Table 3, p. 4, row 36 report
1023.15	Liquid + PrMg3 = PrMg2	PrMg3: Mg 0.75, Pr 0.25; PrMg2: Mg 0.666667, Pr 0.333333	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 19 report
1018.15	Liquid = PrMg + βPr	PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 37 report
1013.15	Liquid + PrMg3 = PrMg2	PrMg3: Mg 0.75, Pr 0.25; PrMg2: Mg 0.666667, Pr 0.333333	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 20 report
1013	liq. + Mg3Pr -> Mg2Pr	liq.: Pr 0.3464; Mg3Pr: Pr 0.2495; Mg2Pr: Pr 0.333333	model	[2] Guo 2005	Table 2, p. 5, row 9 report
1013	liq. + Mg3Pr -> Mg2Pr	liq.: Pr 0.391; Mg3Pr: Pr 0.25; Mg2Pr: Pr 0.333333	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 10 report
1013	liq. + Mg3Pr -> Mg2Pr	L: Pr 0.3479; Mg3Pr: Pr 0.2495; Mg2Pr: Pr 0.333333	model	[3] Guo 2008	Table 2, p. 5, row 9 report
1013	liq. + Mg3Pr -> Mg2Pr	L: Pr 0.391; Mg3Pr: Pr 0.25; Mg2Pr: Pr 0.333333	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 10 report
1012.85	Liquid + PrMg3 = PrMg2	PrMg3: Mg 0.75, Pr 0.25; PrMg2: Mg 0.666667, Pr 0.333333	model	[1] Wang 2015	Table 3, p. 4, row 23 report
1012.55	Liquid + PrMg3 = PrMg2	PrMg3: Mg 0.75, Pr 0.25; PrMg2: Mg 0.666667, Pr 0.333333	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 21 report
1011.15	Liquid + PrMg3 = PrMg2	PrMg3: Mg 0.75, Pr 0.25; PrMg2: Mg 0.666667, Pr 0.333333	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 22 report
1010.85	Liquid = PrMg + βPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015	Table 3, p. 4, row 41 report
1008.15	Liquid = PrMg + βPr	PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 38 report
1008	eutectic: liq. -> bcc(Pr) + MgPr	liq.: Pr 0.6; bcc(Pr): Pr 0.669; MgPr: Pr 0.528	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 18 report
1008	eutectic: liq. -> bcc(Pr) + MgPr	L: Pr 0.6097; bcc(Pr): Pr 0.6602; MgPr: Pr 0.5249	model	[3] Guo 2008	Table 2, p. 5, row 1 report
1008	eutectic: liq. -> bcc(Pr) + MgPr	L: Pr 0.6; bcc(Pr): Pr 0.669; MgPr: Pr 0.528	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 2 report
1008	eutectic: liq. -> bcc(Pr) + MgPr	liq.: Pr 0.601; bcc(Pr): Pr 0.6418; MgPr: Pr 0.5136	model	[2] Guo 2005	Table 2, p. 5, row 17 report
1007.85	Liquid = PrMg + βPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 39 report
1006.15	Liquid = PrMg + βPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 40 report
1003.15	Liquid = PrMg + PrMg2	PrMg: Mg 0.5, Pr 0.5; PrMg2: Mg 0.666667, Pr 0.333333	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 24 report
998.45	Liquid = PrMg + PrMg2	PrMg: Mg 0.5, Pr 0.5; PrMg2: Mg 0.666667, Pr 0.333333	model	[1] Wang 2015	Table 3, p. 4, row 27 report
998.25	Liquid = PrMg + PrMg2	PrMg: Mg 0.5, Pr 0.5; PrMg2: Mg 0.666667, Pr 0.333333	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 26 report
998.15	Liquid = PrMg + PrMg2	PrMg: Mg 0.5, Pr 0.5; PrMg2: Mg 0.666667, Pr 0.333333	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 25 report
998	eutectic: liq -> MgPr + Mg2Pr	liq: Pr 0.405; MgPr: Pr 0.46; Mg2Pr: Pr 0.333333	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 14 report
998	eutectic: liq -> MgPr + Mg2Pr	liq: Pr 0.3822; MgPr: Pr 0.4734; Mg2Pr: Pr 0.333333	model	[2] Guo 2005	Table 2, p. 5, row 13 report
998	eutectic: liq -> MgPr + Mg2Pr	L: Pr 0.405; MgPr: Pr 0.46; Mg2Pr: Pr 0.333333	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 8 report
998	eutectic: liq -> MgPr + Mg2Pr	L: Pr 0.3828; MgPr: Pr 0.4618; Mg2Pr: Pr 0.333333	model	[3] Guo 2008	Table 2, p. 5, row 7 report
953.15	Mg2Pr = PrMg + PrMg3	Mg2Pr: Mg 0.666667, Pr 0.333333; PrMg: Mg 0.5, Pr 0.5; PrMg3: Mg 0.75, Pr 0.25	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 28 report
943.15	Mg2Pr = PrMg + PrMg3	Mg2Pr: Mg 0.666667, Pr 0.333333; PrMg: Mg 0.5, Pr 0.5; PrMg3: Mg 0.75, Pr 0.25	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 29 report
943.15	Mg2Pr = PrMg + PrMg3	Mg2Pr: Mg 0.666667, Pr 0.333333; PrMg: Mg 0.5, Pr 0.5; PrMg3: Mg 0.75, Pr 0.25	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 30 report
943	Mg2Pr -> Mg3Pr + MgPr	Mg2Pr: Pr 0.333333; Mg3Pr: Pr 0.25; MgPr: Pr 0.475	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 12 report
943	Mg2Pr -> Mg3Pr + MgPr	Mg2Pr: Pr 0.333333; Mg3Pr: Pr 0.2498; MgPr: Pr 0.4688	model	[3] Guo 2008	Table 2, p. 5, row 13 report
943	Mg2Pr -> Mg3Pr + MgPr	Mg2Pr: Pr 0.333333; Mg3Pr: Pr 0.25; MgPr: Pr 0.475	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 14 report
943	Mg2Pr -> Mg3Pr + MgPr	Mg2Pr: Pr 0.333333; Mg3Pr: Pr 0.2498; MgPr: Pr 0.4744	model	[2] Guo 2005	Table 2, p. 5, row 11 report
942.75	Mg2Pr = PrMg + PrMg3	Mg2Pr: Mg 0.666667, Pr 0.333333; PrMg: Mg 0.5, Pr 0.5; PrMg3: Mg 0.75, Pr 0.25	model	[1] Wang 2015	Table 3, p. 4, row 32 report
939.15	Mg2Pr = PrMg + PrMg3	Mg2Pr: Mg 0.666667, Pr 0.333333; PrMg: Mg 0.5, Pr 0.5; PrMg3: Mg 0.75, Pr 0.25	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 31 report
866.15	Liquid + PrMg3 = Pr5Mg41	PrMg3: Mg 0.75, Pr 0.25; Pr5Mg41: Mg 0.891304, Pr 0.108696	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 13 report
865.15	Liquid + PrMg3 = Pr5Mg41	PrMg3: Mg 0.75, Pr 0.25; Pr5Mg41: Mg 0.891304, Pr 0.108696	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 10 report
863.15	Liquid + PrMg3 = Pr5Mg41	PrMg3: Mg 0.75, Pr 0.25; Pr5Mg41: Mg 0.891304, Pr 0.108696	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 11 report
862.95	Liquid + PrMg3 = Pr5Mg41	PrMg3: Mg 0.75, Pr 0.25; Pr5Mg41: Mg 0.891304, Pr 0.108696	model	[1] Wang 2015	Table 3, p. 4, row 14 report
853.15	Liquid + Pr5Mg41 = PrMg12	Pr5Mg41: Mg 0.891304, Pr 0.108696; PrMg12: Mg 0.923077, Pr 0.076923	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 7 report
852.75	Liquid + Pr5Mg41 = PrMg12	Pr5Mg41: Mg 0.891304, Pr 0.108696; PrMg12: Mg 0.923077, Pr 0.076923	model	[1] Wang 2015	Table 3, p. 4, row 9 report
849.95	Liquid + PrMg3 = Pr5Mg41	PrMg3: Mg 0.75, Pr 0.25; Pr5Mg41: Mg 0.891304, Pr 0.108696	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 12 report
849.85	Liquid = (Mg) + PrMg12	PrMg12: Mg 0.923077, Pr 0.076923	model	[1] Wang 2015	Table 3, p. 4, row 5 report
848.15	Liquid = (Mg) + PrMg12	PrMg12: Mg 0.923077, Pr 0.076923	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 2 report
848	liq. + Mg3Pr -> Mg41Pr5	L: Pr 0.084; Mg3Pr: Pr 0.18; Mg41Pr5: Pr 0.108696	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 16 report
848	liq. + Mg3Pr -> Mg41Pr5	L: Pr 0.0811; Mg3Pr: Pr 0.2194; Mg41Pr5: Pr 0.108696	model	[3] Guo 2008	Table 2, p. 5, row 15 report
847.15	Liquid = (Mg) + PrMg12	PrMg12: Mg 0.923077, Pr 0.076923	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 4 report
844	liq. + Mg3Pr -> Mg41Pr5	liq.: Pr 0.084; Mg3Pr: Pr 0.18; Mg41Pr5: Pr 0.111	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 6 report
844	liq. + Mg3Pr -> Mg41Pr5	liq.: Pr 0.0825; Mg3Pr: Pr 0.1799; Mg41Pr5: Pr 0.1075	model	[2] Guo 2005	Table 2, p. 5, row 5 report
843.15	Liquid + Pr5Mg41 = PrMg12	Pr5Mg41: Mg 0.891304, Pr 0.108696; PrMg12: Mg 0.923077, Pr 0.076923	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 6 report
840	liq. + Mg41Pr5 -> Mg12Pr	liq.: Pr 0.074; Mg41Pr5: Pr 0.102; Mg12Pr: Pr 0.0769231	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 4 report
840	liq. + Mg41Pr5 -> Mg12Pr	liq.: Pr 0.0764; Mg41Pr5: Pr 0.1072; Mg12Pr: Pr 0.0769231	model	[2] Guo 2005	Table 2, p. 5, row 3 report
838.15	Liquid = (Mg) + PrMg12	PrMg12: Mg 0.923077, Pr 0.076923	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 1 report
838	liq. + Mg41Pr5 -> Mg12Pr	L: Pr 0.0676; Mg41Pr5: Pr 0.108696; Mg12Pr: Pr 0.0769231	model	[3] Guo 2008	Table 2, p. 5, row 17 report
838	eutectic: liq. -> hcp(Mg) + Mg12Pr	liq.: Pr 0.0654; hcp(Mg): Pr 0.0014; Mg12Pr: Pr 0.0769231	model	[2] Guo 2005	Table 2, p. 5, row 1 report
838	liq. + Mg41Pr5 -> Mg12Pr	L: Pr 0.074; Mg41Pr5: Pr 0.108696; Mg12Pr: Pr 0.0769231	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 18 report
837.45	Liquid + Pr5Mg41 = PrMg12	Pr5Mg41: Mg 0.891304, Pr 0.108696; PrMg12: Mg 0.923077, Pr 0.076923	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 8 report
837.05	Liquid = (Mg) + PrMg12	PrMg12: Mg 0.923077, Pr 0.076923	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 3 report
837	eutectic: liq. -> hcp(Mg) + Mg12Pr	L: Pr 0.066; hcp(Mg): Pr 6.000e-4; Mg12Pr: Pr 0.0769231	model	[3] Guo 2008	Table 2, p. 5, row 19 report
833	eutectic: liq. -> hcp(Mg) + Mg12Pr	L: Pr 0.05; hcp(Mg): Pr 0.001; Mg12Pr: Pr 0.0769231	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 20 report
833	eutectic: liq. -> hcp(Mg) + Mg12Pr	liq.: Pr 0.05; hcp(Mg): Pr 0.001; Mg12Pr: Pr 0.0769231	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 2 report
802.15	βPr = PrMg + αPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015 cites Kang 2012 doi	Table 3, p. 4, row 45 report
783.15	βPr = PrMg + αPr	PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Rokhlin 2003	Table 3, p. 4, row 43 report
783.15	βPr = PrMg + αPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015 cites Guo 2008 doi	Table 3, p. 4, row 44 report
783	bcc(Pr) -> MgPr + dhcp(Pr)	bcc(Pr): Pr 0.8097; MgPr: Pr 0.5274; dhcp(Pr): Pr 0.9279	model	[3] Guo 2008	Table 2, p. 5, row 3 report
783	bcc(Pr) -> MgPr + dhcp(Pr)	bcc(Pr): Pr 0.805; MgPr: Pr 0.508; dhcp(Pr): Pr 0.895	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 4 report
783	bcc(Pr) -> MgPr + dhcp(Pr)	bcc(Pr): Pr 0.805; MgPr: Pr 0.508; dhcp(Pr): Pr 0.895	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 20 report
783	bcc(Pr) -> MgPr + dhcp(Pr)	bcc(Pr): Pr 0.8065; MgPr: Pr 0.5226; dhcp(Pr): Pr 0.9135	model	[2] Guo 2005	Table 2, p. 5, row 19 report
782.65	βPr = PrMg + αPr	PrMg: Mg 0.5, Pr 0.5	model	[1] Wang 2015	Table 3, p. 4, row 46 report
773.15	βPr = PrMg + αPr	PrMg: Mg 0.5, Pr 0.5	experimental	[1] Wang 2015 cites Saccone 1993 doi	Table 3, p. 4, row 42 report

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.

Enthalpies of formation, Mg–Pr system (5)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
PrMg	MgPr	-12.7 kJ/mol-atom	298.15	experimental	-10.891 (mp-aaaaacho)	-11.519 (oqmd-17640)	[4] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 10 report
PrMg3	Mg3Pr	-11.5 kJ/mol-atom	298.15	experimental	-12.164 (mp-aaaaaaqm)	-12.509 (oqmd-17642)	[4] Hampl 2013 cites ref. 1933Can	Table 6, p. 10, row 9 report
RMg		-17.2 kJ/mol-atom	298.15	experimental			[4] Hampl 2013 cites ref. 1933Can	Table 6, p. 10, row 9 report
RMg		-12.7 kJ/mol-atom	298.15	experimental			[4] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 10 report
RMg3		-11.5 kJ/mol-atom	298.15	experimental			[4] Hampl 2013 cites ref. 1933Can	Table 6, p. 10, row 9 report

Other properties

Phase transition (9)

Phase transition, Mg–Pr system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	948.15 K	948.15	Liquid = (Mg) + PrMg12	model	[1] Wang 2015 cites Rokhlin 2003	p. 3 report	For example, the reported liquid composition [18] for the invariant reaction Liquid = (Mg) + PrMg12 was extrapolated by the (Mg) liquidus and the invariant reaction temperature, 675 °C, and labeled as 4.64 at.% Pr (22 wt.% Pr) [18].
Phase transition	1038 K	1038	liq. -> MgPr liq.: Pr 0.4915; MgPr: Pr 0.4915	model	[2] Guo 2005	Table 2, p. 5, row 15 report
Phase transition	1038 K	1038	liq. -> MgPr liq.: Pr 0.5; MgPr: Pr 0.5	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 16 report
Phase transition	1038 K	1038	liq. -> MgPr L: Pr 0.5; MgPr: Pr 0.5	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 6 report
Phase transition	1038 K	1038	liq. -> MgPr L: Pr 0.497; MgPr: Pr 0.497	model	[3] Guo 2008	Table 2, p. 5, row 5 report
Phase transition	1063 K	1063	liq. -> Mg3Pr L: Pr 0.2471; Mg3Pr: Pr 0.2471	model	[3] Guo 2008	Table 2, p. 5, row 11 report
Phase transition	1063 K	1063	liq. -> Mg3Pr L: Pr 0.248; Mg3Pr: Pr 0.248	experimental	[3] Guo 2008 cites Saccone 2001 doi	Table 2, p. 5, row 12 report
Phase transition	1063 K	1063	liq. -> Mg3Pr liq.: Pr 0.2467; Mg3Pr: Pr 0.2467	model	[2] Guo 2005	Table 2, p. 5, row 7 report
Phase transition	1063 K	1063	liq. -> Mg3Pr liq.: Pr 0.248; Mg3Pr: Pr 0.248	experimental	[2] Guo 2005 cites Saccone 1993 doi	Table 2, p. 5, row 8 report

Crystal structure (11)

Crystal structure, Mg–Pr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	3.2094 Å	298.15	Mg Mg: Mg 0.99703, Pr 0.00297	unspecified	[1] Wang 2015	Table 1, p. 2, row 1 report
Lattice a	1.475 Å	298.15	Pr5Mg41 Pr5Mg41: Mg 0.891, Pr 0.109	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 3 report
Lattice a	3.898 Å	298.15	PrMg alloy: Pr 0.5	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 6 report
Lattice a	3.898 Å	298.15	PrMg PrMg: Mg 0.47, Pr 0.53	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 13 report
Lattice a	10.34 Å	298.15	PrMg12 PrMg12: Mg 0.923, Pr 0.077	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 2 report
Lattice a	8.689 Å	298.15	PrMg2a PrMg2a: Mg 0.667, Pr 0.333	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 5 report
Lattice a	7.43 Å	298.15	PrMg3 alloy: Pr 0.25	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 4 report
Lattice c	5.2107 Å	298.15	Mg Mg: Mg 0.99703, Pr 0.00297	unspecified	[1] Wang 2015	Table 1, p. 2, row 1 report
Lattice c	1.041 Å	298.15	Pr5Mg41 Pr5Mg41: Mg 0.891, Pr 0.109	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 3 report
Lattice c	5.98 Å	298.15	PrMg12 PrMg12: Mg 0.923, Pr 0.077	unspecified	[1] Wang 2015 cites ref. 1993Sac	Table 1, p. 2, row 2 report
Lattice c	7.411 Å	298.15	PrMg3 alloy: Pr 0.25	unspecified	[1] Wang 2015 cites ref. 1993Sac	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).

Peisheng Wang, Rainer Schmid-Fetzer, Thermodynamic assessment of the Mg–Pr system, Computational Materials Science 104, 138-142 (2015). doi:10.1016/j.commatsci.2014.11.050
Cuiping Guo, Zhenmin Du, Thermodynamic assessment of the Mg–Pr system, Journal of Alloys and Compounds 399, 183-188 (2005). doi:10.1016/j.jallcom.2005.03.033
Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Mg–Pr–Y system, Calphad 32, 177-187 (2008). doi:10.1016/j.calphad.2007.05.007
M. Hampl, C. Blawert, M.R. Silva Campos, N. Hort, Q. Peng, K.U. Kainer et al., Thermodynamic assessment and experimental study of Mg–Gd alloys, Journal of Alloys and Compounds 581, 166-177 (2013). doi:10.1016/j.jallcom.2013.07.042

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). 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}
}