Fe–Ni system

60 accepted literature values from 5 paper(s) (experimental 4, model 15, DFT 33, unspecified 8); 12 calculated phase diagram(s). 13 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	4
model	15
DFT	33
unspecified	8

Accepted values by property group
Property group	Values
invariant reaction	8
phase transition	12
formation	9
mixing / partial	1
crystal structure	30

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
FeNi-00Ans-2SL.tdb	I. Ansara, unpublished, 2000.	`79b9e2435a00dd13114a6ab484f46b25cd1262873c905b8a75b9ef484682ea7f`	viewer · TDB · JSON
FeNi-00Ans-4SL.tdb	I. Ansara, unpublished, 2000.	`a4d9738122fd5737ada943edafad1a4fd4b80104d6e84e0d482af41ef0d9459f`	viewer · TDB · JSON
FeNi-03Dup-LB.tdb	N. Dupin, B. Sundman, March 2003 at JEEP.	`f10470dbf794292e45191eb5a757e818280cd6eb3961a182ab4876c087168b74`	viewer · TDB · JSON
FeNi-03Dup-mod.tdb	N. Dupin, B. Sundman, March 2003 at JEEP.	`7ec5d4a5548add6917ce41483775e43d672505f225e83cb4628d3719723cbba5`	viewer · TDB · JSON
FeNi-10Cac.tdb	G. Cacciamani, A. Dinsdale, M. Palumbo, A. Pasturel, Intermetallics, 18, 1148-62(2010). doi:10.1016/j.intermet.2010.02.026	`37c0af627bda598904d46d4e9102e40d34491d6e26624eec256b91987628b4b3`	viewer · TDB · JSON
FeNi-11Xio.tdb	W. Xiong, H. Zhang, L. Vitos, M. Selleby, Acta Mater., 59, 521-30(2011). doi:10.1016/j.actamat.2010.09.055	`220b0102be8248795839cf026450b3247ae7d2979def2424c876572211d16966`	viewer · TDB · JSON
FeNi-19Ohn.tdb	I. Ohnuma, S. Shimenouchi, T. Omori, K. Ishida, R. Kainuma, Calphad, 67, 101677, 2019. doi:10.1016/j.calphad.2019.101677	`ce2ce2a7c3f6c47575f5dda0c2f63c73d4ab0d99638f75adb953226a13537fc8`	viewer · TDB · JSON
FeNi-23Jac.tdb	A. Jacob, E. Povoden-Karadeniz, P. Retzl, E. Kozeschnik, Calphad, 81, 102531(2023). doi:10.1016/j.calphad.2023.102531	`1c6890e44cf1a0f48f1c1424b66cc59e4f8b5921863458aeca158f2b1a7c5b9b`	viewer · TDB · JSON
FeNi-23Wit.tdb	V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, J. Alloys Compd., 935, 168118(2023). doi:10.1016/j.jallcom.2022.168118	`65e467a6d693b565c8f73beb62efa4b5420704ab8533fae1b30e01308b261a76`	viewer · TDB · JSON
FeNi-23Zha.tdb	Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023). doi:10.1007/s42243-022-00846-9	`c205b78c12aa1e7362c21bf3dde8a1dacf4a48c08a2e1a61d69d695dac2a3017`	viewer · TDB · JSON
FeNi-85Xin.tdb	Z.S. Xing, D.D. Gohil, A.T. Dinsdale, T. Chart, DMA(A) 103, National Physical Laboratory, London, 1985.	`89060926e9804263dac9b21393a3ed417ec0f6455d0327448a94f47d41844770`	viewer · TDB · JSON
FeNi-95Ans.tdb	I. Ansara, unpublished, 1995.	`e629405a3fc1ba63c082eb583e87a290b6f68c780f5b3ece09f766636fb51022`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
FeNi-00Ans-2SL.tdb	1791.47	BCC_A2 (x(Ni) 0.03871) + FCC_A1 (x(Ni) 0.04396) + LIQUID (x(Ni) 0.04904)
FeNi-00Ans-2SL.tdb	634.19	BCC_A2 (x(Ni) 0.0344) + L12_FCC (x(Ni) 0.52236) + L12_FCC#2 (x(Ni) 0.63137)
FeNi-00Ans-2SL.tdb	634.19	BCC_A2 (x(Ni) 0.0344) + FCC_A1 (x(Ni) 0.52236) + L12_FCC (x(Ni) 0.63137)
FeNi-00Ans-4SL.tdb	1791.47	BCC_A2 (x(Ni) 0.03871) + FCC_4SL (x(Ni) 0.04396) + LIQUID (x(Ni) 0.04904)
FeNi-00Ans-4SL.tdb	1791.47	BCC_A2 (x(Ni) 0.03871) + FCC_A1 (x(Ni) 0.04396) + LIQUID (x(Ni) 0.04904)
FeNi-00Ans-4SL.tdb	1667.47	BCC_A2 (x(Ni) 0) + FCC_4SL (x(Ni) 0) + FCC_A1 (x(Ni) 0)
FeNi-00Ans-4SL.tdb	1184.81	BCC_A2 (x(Ni) 0) + FCC_4SL (x(Ni) 0) + FCC_A1 (x(Ni) 0)
FeNi-00Ans-4SL.tdb	642.04	BCC_A2 (x(Ni) 0.03568) + FCC_A1 (x(Ni) 0.51841) + FCC_4SL (x(Ni) 0.63417)
FeNi-00Ans-4SL.tdb	642.04	BCC_A2 (x(Ni) 0.03568) + FCC_4SL (x(Ni) 0.51841) + FCC_4SL#2 (x(Ni) 0.63417)
FeNi-03Dup-LB.tdb	1790.36	B2_BCC (x(Ni) 0.03827) + FCC_4SL (x(Ni) 0.04346) + LIQUID (x(Ni) 0.04906)
FeNi-03Dup-LB.tdb	1790.36	B2_BCC (x(Ni) 0.03827) + FCC_A1 (x(Ni) 0.04346) + LIQUID (x(Ni) 0.04906)
FeNi-03Dup-LB.tdb	1667.45	B2_BCC (x(Ni) 0) + FCC_4SL (x(Ni) 0) + FCC_A1 (x(Ni) 0)
FeNi-03Dup-LB.tdb	632.78	B2_BCC (x(Ni) 0.03417) + FCC_4SL (x(Ni) 0.52303) + FCC_4SL#2 (x(Ni) 0.62009)
FeNi-03Dup-mod.tdb	1790.36	B2_BCC (x(Ni) 0.03828) + FCC_4SL (x(Ni) 0.04347) + LIQUID (x(Ni) 0.04907)
FeNi-03Dup-mod.tdb	1184.81	BCC_A2 (x(Ni) 0) + FCC_4SL (x(Ni) 0) + FCC_A1 (x(Ni) 0)
FeNi-03Dup-mod.tdb	1066.09	B2_BCC (x(Ni) 1) + FCC_4SL (x(Ni) 1) + FCC_A1 (x(Ni) 1)
FeNi-03Dup-mod.tdb	776.83	FCC_4SL (x(Ni) 0.76509) + FCC_A1 (x(Ni) 0.76794) + B2_BCC (x(Ni) 1)
FeNi-03Dup-mod.tdb	559.72	BCC_A2 (x(Ni) 0.02273) + FCC_A1 (x(Ni) 0.54734) + FCC_4SL (x(Ni) 0.61438)
FeNi-03Dup-mod.tdb	559.72	BCC_A2 (x(Ni) 0.02273) + FCC_4SL (x(Ni) 0.54734) + FCC_4SL#2 (x(Ni) 0.61438)
FeNi-03Dup-mod.tdb	448.18	BCC_A2 (x(Ni) 0.0074) + FCC_4SL (x(Ni) 0.64988) + B2_BCC (x(Ni) 1)
FeNi-03Dup-mod.tdb	448.18	BCC_A2 (x(Ni) 0.0074) + FCC_4SL (x(Ni) 0.64988) + B2_BCC (x(Ni) 1)
FeNi-10Cac.tdb	1786.78	B2_BCC (x(Ni) 0.05185) + FCC_4SL (x(Ni) 0.0571) + LIQUID (x(Ni) 0.06419)
FeNi-10Cac.tdb	701.22	B2_BCC (x(Ni) 0.06396) + FCC_4SL#2 (x(Ni) 0.44397) + FCC_4SL (x(Ni) 0.47441)
FeNi-10Cac.tdb	568.81	BCC_A2 (x(Ni) 0.0486) + FCC_4SL (x(Ni) 0.5373) + FCC_4SL#2 (x(Ni) 0.55838)
FeNi-10Cac.tdb	568.81	BCC_4SL (x(Ni) 0.0486) + FCC_4SL (x(Ni) 0.5373) + FCC_4SL#2 (x(Ni) 0.55838)
FeNi-10Cac.tdb	568.81	BCC_4SL (x(Ni) 0.0486) + FCC_4SL (x(Ni) 0.5373) + FCC_4SL#2 (x(Ni) 0.55838)
FeNi-10Cac.tdb	568.81	B2_BCC (x(Ni) 0.0486) + FCC_4SL#2 (x(Ni) 0.5373) + FCC_4SL (x(Ni) 0.55838)
FeNi-11Xio.tdb	1809.86	BCC_A2 (x(Ni) 0.00231) + LIQUID (x(Ni) 0.00288) + FCC_A1 (x(Ni) 0.00763)
FeNi-19Ohn.tdb	1789.66	BCC_A2 (x(Ni) 0.03708) + FCC_4SL (x(Ni) 0.04252) + LIQUID (x(Ni) 0.04865)
FeNi-19Ohn.tdb	1789.66	BCC_A2 (x(Ni) 0.03708) + FCC_A1 (x(Ni) 0.04252) + LIQUID (x(Ni) 0.04865)
FeNi-19Ohn.tdb	1667.47	BCC_A2 (x(Ni) 0) + FCC_4SL (x(Ni) 0) + FCC_A1 (x(Ni) 0)
FeNi-19Ohn.tdb	319.5	BCC_A2 (x(Ni) 0.04198) + FCC_4SL#2 (x(Ni) 0.52518) + FCC_4SL (x(Ni) 0.55491)
FeNi-23Jac.tdb	1814.99	LIQUID (x(Ni) 0.03105) + BCC_A2 (x(Ni) 0.03223) + FCC_A1 (x(Ni) 0.03786)
FeNi-23Jac.tdb	700.65	BCC_A2 (x(Ni) 0.07252) + FCC_A1#2 (x(Ni) 0.42989) + FCC_A1 (x(Ni) 0.44958)
FeNi-23Wit.tdb	1786.79	BCC_A2 (x(Ni) 0.05184) + FCC_A1 (x(Ni) 0.05709) + LIQUID (x(Ni) 0.06418)
FeNi-23Wit.tdb	701.22	BCC_A2 (x(Ni) 0.06396) + FCC_A1#2 (x(Ni) 0.44397) + FCC_A1 (x(Ni) 0.47441)
FeNi-23Wit.tdb	616.83	BCC_A2 (x(Ni) 0.05458) + FCC_A1 (x(Ni) 0.52664) + FENI3_L12 (x(Ni) 0.62165)
FeNi-23Zha.tdb	1788.8	BCC_A2 (x(Ni) 0.03783) + FCC_A1 (x(Ni) 0.04305) + LIQUID (x(Ni) 0.04935)
FeNi-23Zha.tdb	1788.8	BCC_A2 (x(Ni) 0.03783) + L12_FCC (x(Ni) 0.04305) + LIQUID (x(Ni) 0.04935)
FeNi-23Zha.tdb	1667.47	BCC_A2 (x(Ni) 0) + FCC_A1 (x(Ni) 0) + L12_FCC (x(Ni) 0)
FeNi-23Zha.tdb	694.74	BCC_A2 (x(Ni) 0.05342) + FCC_A1 (x(Ni) 0.43878) + FCC_A1#2 (x(Ni) 0.47119)
FeNi-23Zha.tdb	630.1	BCC_A2 (x(Ni) 0.04687) + FCC_A1 (x(Ni) 0.51713) + L12_FCC (x(Ni) 0.62765)
FeNi-85Xin.tdb	1791.47	BCC_A2 (x(Ni) 0.03871) + FCC_A1 (x(Ni) 0.04396) + LIQUID (x(Ni) 0.04904)
FeNi-95Ans.tdb	1791.47	BCC_A2 (x(Ni) 0.03871) + FCC_A1 (x(Ni) 0.04396) + LIQUID (x(Ni) 0.04904)
FeNi-95Ans.tdb	633.16	BCC_A2 (x(Ni) 0.03423) + FCC_A1 (x(Ni) 0.52285) + L12_FCC (x(Ni) 0.62397)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull FeNi-00Ans-2SL · CALPHAD hull FeNi-00Ans-4SL · CALPHAD hull FeNi-03Dup-LB · CALPHAD hull FeNi-03Dup-mod · CALPHAD hull FeNi-10Cac · CALPHAD hull FeNi-11Xio · CALPHAD hull FeNi-19Ohn · CALPHAD hull FeNi-23Wit · CALPHAD hull FeNi-23Zha · CALPHAD hull FeNi-85Xin · CALPHAD hull FeNi-95Ans

Invariant reactions (literature)

Invariant reactions reported in the literature for the Fe–Ni system (8)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1787.15	peritectic: δ-Fe + liquid -> γ-(Fe,Ni)	δ-Fe: Ni 0.035; L: Ni 0.049; γ-(Fe,Ni): Ni 0.042	unspecified	[1] Cacciamani 2010 cites Swartzendruber 1991 doi	Table 4, p. 11, row 1 report
1787.15	peritectic: δ-Fe + liquid -> γ-(Fe,Ni)	δ-Fe: Ni 0.052; L: Ni 0.064; γ-(Fe,Ni): Ni 0.057	model	[1] Cacciamani 2010	Table 4, p. 11, row 2 report
701.15	monotectoid: γ-(Fe,Ni)PM -> α-Fe + γ-(Fe,Ni)FM	γ-(Fe,Ni)PM: Ni 0.444; α-Fe: Ni 0.064; γ-(Fe,Ni)FM: Ni 0.475	model	[1] Cacciamani 2010	Table 4, p. 11, row 10 report
688.15	monotectoid: γ-(Fe,Ni)PM -> α-Fe + γ-(Fe,Ni)FM	γ-(Fe,Ni)PM: Ni 0.435; α-Fe: Ni 0.042; γ-(Fe,Ni)FM: Ni 0.475	unspecified	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 4, p. 11, row 8 report
673.15	monotectoid: γ-(Fe,Ni)PM -> α-Fe + γ-(Fe,Ni)FM	γ-(Fe,Ni)PM: Ni 0.4; α-Fe: Ni 0.06; γ-(Fe,Ni)FM: Ni 0.46	experimental	[1] Cacciamani 2010 cites Yang 1996 doi	Table 4, p. 11, row 9 report
626.15	eutectoid: γ-(Fe,Ni)FM -> α-Fe + FeNi3	γ-(Fe,Ni)FM: Ni 0.525; α-Fe: Ni 0.056; FeNi3: Ni 0.555	model	[1] Cacciamani 2010	Table 4, p. 11, row 15 report
620.15	eutectoid: γ-(Fe,Ni)FM -> α-Fe + FeNi3	γ-(Fe,Ni)FM: Ni 0.49; α-Fe: Ni 0.047; FeNi3: Ni 0.63	unspecified	[1] Cacciamani 2010 cites Swartzendruber 1991 doi	Table 4, p. 11, row 13 report
618.15	eutectoid: γ-(Fe,Ni)FM -> α-Fe + FeNi3	γ-(Fe,Ni)FM: Ni 0.53; α-Fe: Ni 0.032; FeNi3: Ni 0.636	unspecified	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 4, p. 11, row 14 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, Fe–Ni system (9)
Phase	Value	Class	Source	Location
Fe2Ni C11f	-0.6 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 6 report
Fe3Ni D03	4.3 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 5 report
Fe3Ni L12	5.2 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 4 report
FeNi B2	8.9 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 8 report
FeNi B32	2.9 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 9 report
FeNi L10	-5.5 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 7 report
FeNi2 C11f	-4.6 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 10 report
FeNi3 D03	2.8 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 12 report
FeNi3 L12	-7.7 kJ/mol-atom	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 11 report

Other properties

Phase transition (12)

Phase transition, Fe–Ni system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	523.15 K	523.15	other	model	[1] Cacciamani 2010	p. 4 report	In the FeeNi system, they found that, besides the L12 FeNi3 ordered phase, the L10 is also stable at low temperature with a transition temperature around 250 C.
Phase transition	593.15 K	593.15	other	experimental	[1] Cacciamani 2010 cites Pauleve 1962	p. 3 report	- L10 FeNi can be obtained as a metastable phase at 50 at% Ni. It has a critical ordering temperature of about 320 C, as determined by [76].
Phase transition	735.15 K	735.15	critical point: γ-(Fe,Ni)PM + γ-(Fe,Ni)FM γ-(Fe,Ni)PM: Ni 0.48; γ-(Fe,Ni)FM: Ni 0.48	unspecified	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 4, p. 11, row 6 report
Phase transition	745.15 K	745.15	critical point: γ-(Fe,Ni)PM + γ-(Fe,Ni)FM γ-(Fe,Ni)PM: Ni 0.484; γ-(Fe,Ni)FM: Ni 0.484	model	[1] Cacciamani 2010	Table 4, p. 11, row 7 report
Phase transition	787.15 K	787.15	congruent transformation: FeNi3 -> γ-(Fe,Ni) FeNi3: Ni 0.723; γ-(Fe,Ni): Ni 0.723	model	[1] Cacciamani 2010	Table 4, p. 11, row 12 report
Phase transition	790.15 K	790.15	congruent transformation: FeNi3 -> γ-(Fe,Ni) FeNi3: Ni 0.725; γ-(Fe,Ni): Ni 0.725	unspecified	[1] Cacciamani 2010 cites Swartzendruber 1991 doi	Table 4, p. 11, row 11 report
Phase transition	888.4 K	888.4	magnetic	model	[2] Mathon 2009 cites Dinsdale 1986	p. 4 report	It has to be noticed that the TC (fcc_A1, FeNi3 ) calculated from [16] chosen for our thermodynamic database is 888,4 K.
Phase transition	953 K	953	magnetic	experimental	[2] Mathon 2009	p. 4 report	From their experimental results, they deduced by extrapolation the Curie temperature for the ordered L12 _FeNi3 to be 953 K; they point out that they are in agreement with the value of 954 K from Wakelin and Yates [68].
Phase transition	954 K	954	magnetic	experimental	[2] Mathon 2009 cites Wakelin 1953 doi	p. 4 report	From their experimental results, they deduced by extrapolation the Curie temperature for the ordered L12 _FeNi3 to be 953 K; they point out that they are in agreement with the value of 954 K from Wakelin and Yates [68].
Phase transition	1705.15 K	1705.15	congruent melting: γ-(Fe,Ni) -> liquid γ-(Fe,Ni): Ni 0.663; L: Ni 0.663	model	[1] Cacciamani 2010	Table 4, p. 11, row 5 report
Phase transition	1713.15 K	1713.15	congruent melting: γ-(Fe,Ni) -> liquid γ-(Fe,Ni): Ni 0.66; L: Ni 0.66	unspecified	[1] Cacciamani 2010 cites Swartzendruber 1991 doi	Table 4, p. 11, row 3 report
Phase transition	1716.15 K	1716.15	congruent melting: γ-(Fe,Ni) -> liquid γ-(Fe,Ni): Ni 0.66; L: Ni 0.66	unspecified	[1] Cacciamani 2010 cites Swartzendruber 1991 doi	Table 4, p. 11, row 4 report

Mixing / partial (1)

Mixing / partial, Fe–Ni system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Enthalpy of mixing printed: ΔmixH^SQS	-6.517 kJ/mol-atom		fcc alloy: Fe 0.5, Ni 0.5	DFT	[3] Bracq 2021	Table 1, p. 4, row 9 report

Crystal structure (30)

Crystal structure, Fe–Ni system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	2.8577 Å		bcc alloy: Fe 0.75, Ni 0.25	DFT	[4] Xiong 2011	Table 1, p. 5, row 7 report
Lattice a	2.8547 Å		bcc alloy: Fe 0.7, Ni 0.3	DFT	[4] Xiong 2011	Table 1, p. 5, row 8 report
Lattice a	2.8279 Å		bcc alloy: Fe 0.3, Ni 0.7	DFT	[4] Xiong 2011	Table 1, p. 5, row 11 report
Lattice a	2.8487 Å		bcc alloy: Fe 0.96, Ni 0.04	DFT	[4] Xiong 2011	Table 1, p. 5, row 3 report
Lattice a	2.812 Å		bcc alloy: Fe 0.1, Ni 0.9	DFT	[4] Xiong 2011	Table 1, p. 5, row 14 report
Lattice a	2.8602 Å		bcc alloy: Fe 0.9, Ni 0.1	DFT	[4] Xiong 2011	Table 1, p. 5, row 6 report
Lattice a	2.8202 Å		bcc alloy: Fe 0.2, Ni 0.8	DFT	[4] Xiong 2011	Table 1, p. 5, row 13 report
Lattice a	2.8514 Å		bcc alloy: Fe 0.95, Ni 0.05	DFT	[4] Xiong 2011	Table 1, p. 5, row 4 report
Lattice a	2.8428 Å		bcc alloy: Fe 0.98, Ni 0.02	DFT	[4] Xiong 2011	Table 1, p. 5, row 2 report
Lattice a	2.8569 Å		bcc alloy: Fe 0.925, Ni 0.075	DFT	[4] Xiong 2011	Table 1, p. 5, row 5 report
Lattice a	2.8241 Å		bcc alloy: Fe 0.25, Ni 0.75	DFT	[4] Xiong 2011	Table 1, p. 5, row 12 report
Lattice a	2.8353 Å		bcc alloy: Fe 0.4, Ni 0.6	DFT	[4] Xiong 2011	Table 1, p. 5, row 10 report
Lattice a	2.8422 Å		bcc alloy: Fe 0.5, Ni 0.5	DFT	[4] Xiong 2011	Table 1, p. 5, row 9 report
Lattice a	2.805 Å		bcc alloy: Fe 0.01, Ni 0.99	DFT	[4] Xiong 2011	Table 1, p. 5, row 15 report
Lattice a	3.5523 Å	298.15	FeNi3 alloy: Ni 0.75	model	[1] Cacciamani 2010	Table 1, p. 4, row 5 report
Lattice a	2.8665 Å	298.15	α-Fe, δ-Fe alloy: Ni 0	model	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 1, p. 4, row 2 report
Lattice a	2.9315 Å	298.15	α-Fe, δ-Fe alloy: Ni 0	model	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 1, p. 4, row 2 report
Lattice a	3.6467 Å	298.15	γ-(Fe,Ni) alloy: Ni 0.5	model	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 1, p. 4, row 1 report
Lattice a	3.524 Å	298.15	γ-(Fe,Ni) alloy: Ni 0.5	model	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 1, p. 4, row 1 report
Lattice a	3.575 Å	298.15	γ-(Fe,Ni) alloy: Ni 0.5	model	[1] Cacciamani 2010 cites Kuznetsov 2003	Table 1, p. 4, row 1 report
Lattice a	3.5523 Å	790.15 (<)	FeNi3	model	[5] Keyzer 2009	Table 1, p. 3, row 4 report
lattice unspecified axis printed: a0	3.504 Å	0	Fe2Ni C11f alloy: Fe 0.667, Ni 0.333	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 6 report
lattice unspecified axis printed: a0	5.705 Å	0	Fe3Ni D03 alloy: Fe 0.75, Ni 0.25	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 5 report
lattice unspecified axis printed: a0	3.56 Å	0	Fe3Ni L12 alloy: Fe 1, Ni 0	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 4 report
lattice unspecified axis printed: a0	2.844 Å	0	FeNi B2 alloy: Fe 0.5, Ni 0.5	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 8 report
lattice unspecified axis printed: a0	5.668 Å	0	FeNi B32 alloy: Fe 0.5, Ni 0.5	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 9 report
lattice unspecified axis printed: a0	3.547 Å	0	FeNi L10 alloy: Fe 0.5, Ni 0.5	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 7 report
lattice unspecified axis printed: a0	3.55 Å	0	FeNi2 C11f alloy: Fe 0.333, Ni 0.667	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 10 report
lattice unspecified axis printed: a0	5.6 Å	0	FeNi3 D03 alloy: Fe 0.25, Ni 0.75	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 12 report
lattice unspecified axis printed: a0	3.5 Å	0	FeNi3 L12 alloy: Fe 0.25, Ni 0.75	DFT	[1] Cacciamani 2010	Table 3, p. 7, row 11 report

Sources

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

G. Cacciamani, A. Dinsdale, M. Palumbo, A. Pasturel, The Fe–Ni system: Thermodynamic modelling assisted by atomistic calculations, Intermetallics 18, 1148-1162 (2010). doi:10.1016/j.intermet.2010.02.026
Muriel Mathon, Damien Connétable, Bo Sundman, Jacques Lacaze, Calphad-type assessment of the Fe–Nb–Ni ternary system, Calphad 33, 136-161 (2009). doi:10.1016/j.calphad.2008.10.005
Guillaume Bracq, Jean-Claude Crivello, Mathilde Laurent-Brocq, Jean-Marc Joubert, Ivan Guillot, What is the Enthalpy Contribution to the Stabilization of the Co–Cr–Fe–Mn–Ni Faced-centered Cubic Solid Solution?, J. Phase Equilib. Diffus. 42, 561-570 (2021). doi:10.1007/s11669-021-00922-9
W. Xiong, H. Zhang, L. Vitos, M. Selleby, Magnetic phase diagram of the Fe–Ni system, Acta Materialia 59, 521-530 (2011). doi:10.1016/j.actamat.2010.09.055
Jozefien De Keyzer, Gabriele Cacciamani, Nathalie Dupin, Patrick Wollants, Thermodynamic modeling and optimization of the Fe–Ni–Ti system, Calphad 33, 109-123 (2009). doi:10.1016/j.calphad.2008.10.003

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}
}