Hf–Ni phases

18 phases (tier A 8, tier C 7, liquid 1, needs_review 2); 18 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Hf–Ni system page · Markdown · field reference

Phases of the Hf–Ni system (18)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:hf-ni:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 1427.62–2539.46 K, x(Ni) 0–0.08438	6	6
B2_BCC phase:hf-ni:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1350.9–2516.97 K, x(Ni) 0–0.50634	5	1
FCC_A1 phase:hf-ni:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–3999.62 K, x(Ni) 0.98196–1	7	6
L12_FCC phase:hf-ni:fcc-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1160–1700 K, x(Ni) 0.99–0.99	5	1
HCP_A3 phase:hf-ni:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–2016.68 K, x(Ni) 0–0.0133	5	5
HF2NI_C16 phase:hf-ni:hf2ni-c16	Al2Cu · C16 · tI12 · I4/mcm (140)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1562.55 K, x(Ni) 0.31648–0.33333	3	5
HF2NI5 phase:hf-ni:hf2ni5		needs_review	stable in 1 of 1 calculated diagram(s): 300–1612.16 K, x(Ni) 0.71429–0.71429	0	1
HF2NI7 phase:hf-ni:hf2ni7	Ni7Zr2 · mC36 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1788.95 K, x(Ni) 0.77778–0.79866	9	5
HF3NI7 phase:hf-ni:hf3ni7	Hf3Ni7 · aP20 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 1289.3–1529.43 K, x(Ni) 0.7–0.7	6	4
HF7NI10 phase:hf-ni:hf7ni10	Ni10Zr7 · oC68 · Cmce (64)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1573.12 K, x(Ni) 0.58824–0.58824	9	5
HF8NI21 phase:hf-ni:hf8ni21	Hf8Ni21 · aP29 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 1448–1579.97 K, x(Ni) 0.72414–0.72414	4	4
HF9NI11 phase:hf-ni:hf9ni11	Pt11Zr9 · tI40 · I4/m (87)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–1616.09 K, x(Ni) 0.55–0.55	7	4
HFNI_HT phase:hf-ni:hfni		needs_review	stable in 3 of 3 calculated diagram(s): 1423.15–1808.47 K, x(Ni) 0.5–0.5	2	3
HFNI_B33 phase:hf-ni:hfni-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1825.62 K, x(Ni) 0.5–0.5	3	5
HFNI3_HT phase:hf-ni:hfni3-ht	BaPb3 · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 1470.06–1632.16 K, x(Ni) 0.75–0.75	0	4
HFNI3_RT phase:hf-ni:hfni3-rt	Pd2RhTa · hP40 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–1472.75 K, x(Ni) 0.75–0.75	0	4
HFNI5_C15B phase:hf-ni:hfni5-c15b	AuBe5 · C15_b · cF24 · F-43m (216)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1675.31 K, x(Ni) 0.83333–0.83333	8	5
LIQUID phase:hf-ni:liquid	liquid	liquid	stable in 5 of 5 calculated diagram(s): 1410.87–4000 K, x(Ni) 0–1	9	5

BCC_A2 (Hf–Ni)

Id: phase:hf-ni:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1427.62–2539.46 K, x(Ni) 0–0.08438
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:hf-ni:bcc-a2, corpus:phase:hf-ni:a2-bcc
paper: paper:10.1016/j.calphad.2011.10.003:bcc-Hf, paper:10.1016/j.tca.2018.08.011:bcc-A2
tdb: tdb:HfNi-01Wan-LB.tdb:BCC_A2, tdb:HfNi-08Zha.tdb:BCC_A2, tdb:HfNi-11Cac.tdb:BCC_A2, tdb:HfNi-18Ros.tdb:A2_BCC, tdb:HfNi-18Ros.tdb:BCC_A2, tdb:HfNi-75Kau.tdb:BCC_A2

TDB models of BCC_A2 (6): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: BCC_A2, type code %B, sha256 1e74d0865d1d85b9…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : HF% NI : VA : !

HfNi-08Zha.tdb: BCC_A2, type code %B, sha256 d63ce8bd980b5800…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : HF% NI : VA : !

HfNi-11Cac.tdb: BCC_A2, type code %B, sha256 e6cae16c4cced3c0…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : HF% NI : VA : !

HfNi-18Ros.tdb: A2_BCC, type code %B, sha256 24edb198273bee61…

53: PHASE A2_BCC %B 2 1 3 !
54: CONST A2_BCC : HF% NI : VA : !

HfNi-18Ros.tdb: BCC_A2, type code %B, sha256 24edb198273bee61…

48: PHASE BCC_A2 %B 2 1 3 !
49: CONST BCC_A2 : HF% NI : VA : !

HfNi-75Kau.tdb: BCC_A2, type code %B, sha256 899efd418770558a…

40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : HF% NI : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

B2_BCC (Hf–Ni)

Id: phase:hf-ni:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: HfNi-18Ros.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in HfNi-18Ros.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 1350.9–2516.97 K, x(Ni) 0–0.50634
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:hf-ni:bcc-b2, corpus:phase:hf-ni:b2-bcc
paper: paper:10.1016/j.tca.2018.08.011:B2, paper:10.1016/j.tca.2018.08.011:NiHf(B2), paper:10.1016/j.tca.2018.08.011:bcc-B2
tdb: tdb:HfNi-18Ros.tdb:B2_BCC

TDB models of B2_BCC (1): PHASE and CONSTITUENT statements as written

HfNi-18Ros.tdb: B2_BCC, type code %BO, sha256 24edb198273bee61…

58: PHASE B2_BCC %BO 3 0.5 0.5 3 !
59: CONST B2_BCC : HF% NI : HF NI% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase

FCC_A1 (Hf–Ni)

Id: phase:hf-ni:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300–3999.62 K, x(Ni) 0.98196–1
Literature: 7 values (7 accepted) from 2 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:hf-ni:fcc-a1, corpus:phase:hf-ni:a1-fcc
paper: paper:10.1016/j.calphad.2011.10.003:Ni, paper:10.1016/j.tca.2018.08.011:Hf(fcc-A1), paper:10.1016/j.tca.2018.08.011:fcc-A1
tdb: tdb:HfNi-01Wan-LB.tdb:FCC_A1, tdb:HfNi-08Zha.tdb:FCC_A1, tdb:HfNi-11Cac.tdb:FCC_A1, tdb:HfNi-18Ros.tdb:A1_FCC, tdb:HfNi-18Ros.tdb:FCC_A1, tdb:HfNi-75Kau.tdb:FCC_A1

TDB models of FCC_A1 (6): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: FCC_A1, type code %A, sha256 1e74d0865d1d85b9…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : HF NI% : VA : !

HfNi-08Zha.tdb: FCC_A1, type code %A, sha256 d63ce8bd980b5800…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : HF NI% : VA : !

HfNi-11Cac.tdb: FCC_A1, type code %A, sha256 e6cae16c4cced3c0…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : HF NI% : VA : !

HfNi-18Ros.tdb: A1_FCC, type code %A, sha256 24edb198273bee61…

38: PHASE A1_FCC %A 2 1 1 !
39: CONST A1_FCC : HF NI% : VA : !

HfNi-18Ros.tdb: FCC_A1, type code %A, sha256 24edb198273bee61…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : HF NI% : VA : !

HfNi-75Kau.tdb: FCC_A1, type code %A, sha256 899efd418770558a…

35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : HF NI% : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

L12_FCC (Hf–Ni)

Id: phase:hf-ni:fcc-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: HfNi-18Ros.tdb: ordered phase with disordered part A1_FCC (order/disorder model)
Caveat: partitioned order/disorder model in HfNi-18Ros.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 1160–1700 K, x(Ni) 0.99–0.99
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:hf-ni:fcc-l12, corpus:phase:hf-ni:l12-fcc
paper: paper:10.1016/j.tca.2018.08.011:L12, paper:10.1016/j.tca.2018.08.011:Ni3Hf(L12), paper:10.1016/j.tca.2018.08.011:NiHf3(L12)
tdb: tdb:HfNi-18Ros.tdb:L12_FCC

TDB models of L12_FCC (1): PHASE and CONSTITUENT statements as written

HfNi-18Ros.tdb: L12_FCC, type code %AY, sha256 24edb198273bee61…

43: PHASE L12_FCC %AY 3 0.75 0.25 1 !
44: CONST L12_FCC : HF NI% : HF% NI : VA :  !

Example references (1 of 1; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase

HCP_A3 (Hf–Ni)

Id: phase:hf-ni:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300–2016.68 K, x(Ni) 0–0.0133
Literature: 5 values (5 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:hf-ni:hcp-a3
paper: paper:10.1016/j.calphad.2011.10.003:hcp-Hf, paper:10.1016/j.tca.2018.08.011:Hf(hcp-A3)
tdb: tdb:HfNi-01Wan-LB.tdb:HCP_A3, tdb:HfNi-08Zha.tdb:HCP_A3, tdb:HfNi-11Cac.tdb:HCP_A3, tdb:HfNi-18Ros.tdb:HCP_A3, tdb:HfNi-75Kau.tdb:HCP_A3

TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HCP_A3, type code %A, sha256 1e74d0865d1d85b9…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : HF% NI : VA : !

HfNi-08Zha.tdb: HCP_A3, type code %A, sha256 d63ce8bd980b5800…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : HF% NI : VA : !

HfNi-11Cac.tdb: HCP_A3, type code %A, sha256 e6cae16c4cced3c0…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : HF% NI : VA : !

HfNi-18Ros.tdb: HCP_A3, type code %A, sha256 24edb198273bee61…

63: PHASE HCP_A3 %A 2 1 0.5 !
64: CONST HCP_A3 : HF% NI : VA : !

HfNi-75Kau.tdb: HCP_A3, type code %A, sha256 899efd418770558a…

45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : HF% NI : VA : !

Example references (6 of 6; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
cited as the source of values for this phase

HF2NI_C16 (Hf–Ni)

Id: phase:hf-ni:hf2ni-c16; status assigned
Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type st:c16-al2cu-ti12; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300–1562.55 K, x(Ni) 0.31648–0.33333
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:hf-ni:hf2ni-c16
paper: paper:10.1016/j.calphad.2011.10.003:Hf2Ni
tdb: tdb:HfNi-01Wan-LB.tdb:HF2NI_C16, tdb:HfNi-08Zha.tdb:HF2NI_C16, tdb:HfNi-11Cac.tdb:HF2NI_C16, tdb:HfNi-18Ros.tdb:HF2NI_C16, tdb:HfNi-75Kau.tdb:HF2NI_C16

TDB models of HF2NI_C16 (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF2NI_C16, type code %, sha256 1e74d0865d1d85b9…

46: PHASE HF2NI_C16 % 2 2 1 !
47: CONST HF2NI_C16 : HF : NI VA : !

HfNi-08Zha.tdb: HF2NI_C16, type code %, sha256 d63ce8bd980b5800…

44: PHASE HF2NI_C16 % 2 2 1 !
45: CONST HF2NI_C16 : HF : NI VA : !

HfNi-11Cac.tdb: HF2NI_C16, type code %, sha256 e6cae16c4cced3c0…

45: PHASE HF2NI_C16 % 2 2 1 !
46: CONST HF2NI_C16 : HF : NI VA : !

HfNi-18Ros.tdb: HF2NI_C16, type code %, sha256 24edb198273bee61…

68: PHASE HF2NI_C16 % 2 2 1 !
69: CONST HF2NI_C16 : HF : NI VA : !

HfNi-75Kau.tdb: HF2NI_C16, type code %, sha256 899efd418770558a…

50: PHASE HF2NI_C16 % 2 2 1 !
51: CONST HF2NI_C16 : HF : NI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

HF2NI5 (Hf–Ni)

Id: phase:hf-ni:hf2ni5; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Candidate (tdb_comment): Hf8Ni21 · aP29 · P-1 — HfNi-75Kau.tdb: 'Prototype Hf8Ni21 (aP29, P-1)'
Stoichiometry: Hf 0.2857, Ni 0.7143
Stability: stable in 1 of 1 calculated diagram(s): 300–1612.16 K, x(Ni) 0.71429–0.71429
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:hf-ni:hf2ni5
tdb: tdb:HfNi-75Kau.tdb:HF2NI5

TDB models of HF2NI5 (1): PHASE and CONSTITUENT statements as written

HfNi-75Kau.tdb: HF2NI5, type code %, sha256 899efd418770558a…

65: PHASE HF2NI5 % 2 2 5 !
66: CONST HF2NI5 : HF : NI : !

Example references (1 of 1; assessments first):

doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase

HF2NI7 (Hf–Ni)

Id: phase:hf-ni:hf2ni7; status assigned
Structure: Ni7Zr2 · mC36 · C2/m (12); type st:ni7zr2-mc36; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 5 of 5 calculated diagram(s): 300–1788.95 K, x(Ni) 0.77778–0.79866
Literature: 9 values (9 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:hf-ni:hf2ni7
paper: paper:10.1016/j.calphad.2011.10.003:Hf2Ni7, paper:10.1016/j.commatsci.2016.08.042:Hf2Ni7, paper:10.1016/j.tca.2018.08.011:Hf2Ni7
tdb: tdb:HfNi-01Wan-LB.tdb:HF2NI7, tdb:HfNi-08Zha.tdb:HF2NI7, tdb:HfNi-11Cac.tdb:HF2NI7, tdb:HfNi-18Ros.tdb:HF2NI7, tdb:HfNi-75Kau.tdb:HF2NI7

TDB models of HF2NI7 (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF2NI7, type code %, sha256 1e74d0865d1d85b9…

91: PHASE HF2NI7 % 2 2 7 !
92: CONST HF2NI7 : HF : NI : !

HfNi-08Zha.tdb: HF2NI7, type code %, sha256 d63ce8bd980b5800…

89: PHASE HF2NI7 % 2 2 7 !
90: CONST HF2NI7 : HF% NI : NI : !

HfNi-11Cac.tdb: HF2NI7, type code %, sha256 e6cae16c4cced3c0…

90: PHASE HF2NI7 % 2 2 7 !
91: CONST HF2NI7 : HF : NI : !

HfNi-18Ros.tdb: HF2NI7, type code %, sha256 24edb198273bee61…

108: PHASE HF2NI7 % 2 2 7 !
109: CONST HF2NI7 : HF% NI : NI : !

HfNi-75Kau.tdb: HF2NI7, type code %, sha256 899efd418770558a…

70: PHASE HF2NI7 % 2 2 7 !
71: CONST HF2NI7 : HF : NI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
reports values for this phase

HF3NI7 (Hf–Ni)

Id: phase:hf-ni:hf3ni7; status assigned
Structure: Hf3Ni7 · aP20 · P-1 (2); type st:hf3ni7-ap20; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.3000, Ni 0.7000
Stability: stable in 4 of 4 calculated diagram(s): 1289.3–1529.43 K, x(Ni) 0.7–0.7
Literature: 6 values (6 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:hf-ni:hf3ni7
paper: paper:10.1016/j.calphad.2011.10.003:Hf3Ni7, paper:10.1016/j.commatsci.2016.08.042:Hf3Ni7, paper:10.1016/j.tca.2018.08.011:Hf3Ni7
tdb: tdb:HfNi-01Wan-LB.tdb:HF3NI7, tdb:HfNi-08Zha.tdb:HF3NI7, tdb:HfNi-11Cac.tdb:HF3NI7, tdb:HfNi-18Ros.tdb:HF3NI7

TDB models of HF3NI7 (4): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF3NI7, type code %, sha256 1e74d0865d1d85b9…

71: PHASE HF3NI7 % 2 3 7 !
72: CONST HF3NI7 : HF : NI : !

HfNi-08Zha.tdb: HF3NI7, type code %, sha256 d63ce8bd980b5800…

69: PHASE HF3NI7 % 2 3 7 !
70: CONST HF3NI7 : HF : NI : !

HfNi-11Cac.tdb: HF3NI7, type code %, sha256 e6cae16c4cced3c0…

70: PHASE HF3NI7 % 2 3 7 !
71: CONST HF3NI7 : HF : NI : !

HfNi-18Ros.tdb: HF3NI7, type code %, sha256 24edb198273bee61…

88: PHASE HF3NI7 % 2 3 7 !
89: CONST HF3NI7 : HF : NI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
reports values for this phase

HF7NI10 (Hf–Ni)

Id: phase:hf-ni:hf7ni10; status assigned
Structure: Ni10Zr7 · oC68 · Cmce (64); type st:ni10zr7-oc68; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.4118, Ni 0.5882
Stability: stable in 5 of 5 calculated diagram(s): 300–1573.12 K, x(Ni) 0.58824–0.58824
Literature: 9 values (9 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:hf-ni:hf7ni10
paper: paper:10.1016/j.calphad.2011.10.003:Hf7Ni10, paper:10.1016/j.commatsci.2016.08.042:Hf7Ni10, paper:10.1016/j.tca.2018.08.011:Hf7Ni10
tdb: tdb:HfNi-01Wan-LB.tdb:HF7NI10, tdb:HfNi-08Zha.tdb:HF7NI10, tdb:HfNi-11Cac.tdb:HF7NI10, tdb:HfNi-18Ros.tdb:HF7NI10, tdb:HfNi-75Kau.tdb:HF7NI10

TDB models of HF7NI10 (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF7NI10, type code %, sha256 1e74d0865d1d85b9…

66: PHASE HF7NI10 % 2 7 10 !
67: CONST HF7NI10 : HF : NI : !

HfNi-08Zha.tdb: HF7NI10, type code %, sha256 d63ce8bd980b5800…

64: PHASE HF7NI10 % 2 7 10 !
65: CONST HF7NI10 : HF : NI : !

HfNi-11Cac.tdb: HF7NI10, type code %, sha256 e6cae16c4cced3c0…

65: PHASE HF7NI10 % 2 7 10 !
66: CONST HF7NI10 : HF : NI : !

HfNi-18Ros.tdb: HF7NI10, type code %, sha256 24edb198273bee61…

83: PHASE HF7NI10 % 2 7 10 !
84: CONST HF7NI10 : HF : NI : !

HfNi-75Kau.tdb: HF7NI10, type code %, sha256 899efd418770558a…

60: PHASE HF7NI10 % 2 7 10 !
61: CONST HF7NI10 : HF : NI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
reports values for this phase

HF8NI21 (Hf–Ni)

Id: phase:hf-ni:hf8ni21; status assigned
Structure: Hf8Ni21 · aP29 · P-1 (2); type st:hf8ni21-ap29; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.2759, Ni 0.7241
Stability: stable in 4 of 4 calculated diagram(s): 1448–1579.97 K, x(Ni) 0.72414–0.72414
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:hf-ni:hf8ni21
paper: paper:10.1016/j.commatsci.2016.08.042:Hf8Ni21
tdb: tdb:HfNi-01Wan-LB.tdb:HF8NI21, tdb:HfNi-08Zha.tdb:HF8NI21, tdb:HfNi-11Cac.tdb:HF8NI21, tdb:HfNi-18Ros.tdb:HF8NI21

TDB models of HF8NI21 (4): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF8NI21, type code %, sha256 1e74d0865d1d85b9…

76: PHASE HF8NI21 % 2 8 21 !
77: CONST HF8NI21 : HF : NI : !

HfNi-08Zha.tdb: HF8NI21, type code %, sha256 d63ce8bd980b5800…

74: PHASE HF8NI21 % 2 8 21 !
75: CONST HF8NI21 : HF : NI : !

HfNi-11Cac.tdb: HF8NI21, type code %, sha256 e6cae16c4cced3c0…

75: PHASE HF8NI21 % 2 8 21 !
76: CONST HF8NI21 : HF : NI : !

HfNi-18Ros.tdb: HF8NI21, type code %, sha256 24edb198273bee61…

93: PHASE HF8NI21 % 2 8 21 !
94: CONST HF8NI21 : HF : NI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
reports values for this phase

HF9NI11 (Hf–Ni)

Id: phase:hf-ni:hf9ni11; status assigned
Structure: Pt11Zr9 · tI40 · I4/m (87); type st:pt11zr9-ti40; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.4500, Ni 0.5500
Stability: stable in 4 of 4 calculated diagram(s): 300–1616.09 K, x(Ni) 0.55–0.55
Literature: 7 values (7 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:hf-ni:hf9ni11
paper: paper:10.1016/j.commatsci.2016.08.042:Hf9Ni11, paper:10.1016/j.tca.2018.08.011:Hf9Ni11
tdb: tdb:HfNi-01Wan-LB.tdb:HF9NI11, tdb:HfNi-08Zha.tdb:HF9NI11, tdb:HfNi-11Cac.tdb:HF9NI11, tdb:HfNi-18Ros.tdb:HF9NI11

TDB models of HF9NI11 (4): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HF9NI11, type code %, sha256 1e74d0865d1d85b9…

61: PHASE HF9NI11 % 2 9 11 !
62: CONST HF9NI11 : HF : NI : !

HfNi-08Zha.tdb: HF9NI11, type code %, sha256 d63ce8bd980b5800…

59: PHASE HF9NI11 % 2 9 11 !
60: CONST HF9NI11 : HF : NI : !

HfNi-11Cac.tdb: HF9NI11, type code %, sha256 e6cae16c4cced3c0…

60: PHASE HF9NI11 % 2 9 11 !
61: CONST HF9NI11 : HF : NI : !

HfNi-18Ros.tdb: HF9NI11, type code %, sha256 24edb198273bee61…

78: PHASE HF9NI11 % 2 9 11 !
79: CONST HF9NI11 : HF : NI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
reports values for this phase

HFNI_HT (Hf–Ni)

Id: phase:hf-ni:hfni; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (dft_mp): Cmcm (63) — on-hull MP HfNi at x(NI)=0.5000
Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Hf1 Ni1 at x(NI)=0.5000
Candidate (literature_printed): (HfNi) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (HfNi) — Hallstedt 2025 mmc2 row for HFNI_HT: HfNi (high T)
Stoichiometry: Hf 0.5000, Ni 0.5000
Stability: stable in 3 of 3 calculated diagram(s): 1423.15–1808.47 K, x(Ni) 0.5–0.5
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:hf-ni:hfni, corpus:phase:hf-ni:hfni-ht
paper: paper:10.1016/j.calphad.2011.10.003:β-HfNi
tdb: tdb:HfNi-01Wan-LB.tdb:HFNI_HT, tdb:HfNi-08Zha.tdb:HFNI_HT, tdb:HfNi-11Cac.tdb:HFNI_HT

TDB models of HFNI_HT (3): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HFNI_HT, type code %, sha256 1e74d0865d1d85b9…

56: PHASE HFNI_HT % 2 1 1 !
57: CONST HFNI_HT : HF : NI : !

HfNi-08Zha.tdb: HFNI_HT, type code %, sha256 d63ce8bd980b5800…

54: PHASE HFNI_HT % 2 1 1 !
55: CONST HFNI_HT : HF : NI : !

HfNi-11Cac.tdb: HFNI_HT, type code %, sha256 e6cae16c4cced3c0…

55: PHASE HFNI_HT % 2 1 1 !
56: CONST HFNI_HT : HF : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

HFNI_B33 (Hf–Ni)

Id: phase:hf-ni:hfni-b33; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; tier A: standard phase name; confidence high
Stoichiometry: Hf 0.5000, Ni 0.5000
Stability: stable in 5 of 5 calculated diagram(s): 300–1825.62 K, x(Ni) 0.5–0.5
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:hf-ni:hfni-b33
paper: paper:10.1016/j.tca.2018.08.011:NiHf(B33)
tdb: tdb:HfNi-01Wan-LB.tdb:HFNI_B33, tdb:HfNi-08Zha.tdb:HFNI_B33, tdb:HfNi-11Cac.tdb:HFNI_B33, tdb:HfNi-18Ros.tdb:HFNI_B33, tdb:HfNi-75Kau.tdb:HFNI_B33

TDB models of HFNI_B33 (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HFNI_B33, type code %, sha256 1e74d0865d1d85b9…

51: PHASE HFNI_B33 % 2 1 1 !
52: CONST HFNI_B33 : HF : NI : !

HfNi-08Zha.tdb: HFNI_B33, type code %, sha256 d63ce8bd980b5800…

49: PHASE HFNI_B33 % 2 1 1 !
50: CONST HFNI_B33 : HF : NI : !

HfNi-11Cac.tdb: HFNI_B33, type code %, sha256 e6cae16c4cced3c0…

50: PHASE HFNI_B33 % 2 1 1 !
51: CONST HFNI_B33 : HF : NI : !

HfNi-18Ros.tdb: HFNI_B33, type code %, sha256 24edb198273bee61…

73: PHASE HFNI_B33 % 2 1 1 !
74: CONST HFNI_B33 : HF : NI : !

HfNi-75Kau.tdb: HFNI_B33, type code %, sha256 899efd418770558a…

55: PHASE HFNI_B33 % 2 1 1 !
56: CONST HFNI_B33 : HF : NI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
cited as the source of values for this phase

HFNI3_HT (Hf–Ni)

Id: phase:hf-ni:hfni3-ht; status assigned
Structure: BaPb3 · hR12 · R-3m (166); type st:bapb3-hr12; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.2500, Ni 0.7500
Stability: stable in 4 of 4 calculated diagram(s): 1470.06–1632.16 K, x(Ni) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:hf-ni:hfni3-ht
tdb: tdb:HfNi-01Wan-LB.tdb:HFNI3_HT, tdb:HfNi-08Zha.tdb:HFNI3_HT, tdb:HfNi-11Cac.tdb:HFNI3_HT, tdb:HfNi-18Ros.tdb:HFNI3_HT

TDB models of HFNI3_HT (4): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HFNI3_HT, type code %, sha256 1e74d0865d1d85b9…

86: PHASE HFNI3_HT % 2 1 3 !
87: CONST HFNI3_HT : HF : NI : !

HfNi-08Zha.tdb: HFNI3_HT, type code %, sha256 d63ce8bd980b5800…

84: PHASE HFNI3_HT % 2 1 3 !
85: CONST HFNI3_HT : HF : NI : !

HfNi-11Cac.tdb: HFNI3_HT, type code %, sha256 e6cae16c4cced3c0…

85: PHASE HFNI3_HT % 2 1 3 !
86: CONST HFNI3_HT : HF : NI : !

HfNi-18Ros.tdb: HFNI3_HT, type code %, sha256 24edb198273bee61…

103: PHASE HFNI3_HT % 2 1 3 !
104: CONST HFNI3_HT : HF : NI : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

HFNI3_RT (Hf–Ni)

Id: phase:hf-ni:hfni3-rt; status assigned
Structure: Pd2RhTa · hP40 · P6_3/mmc (194); type st:pd2rhta-hp40; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Hf 0.2500, Ni 0.7500
Stability: stable in 4 of 4 calculated diagram(s): 300–1472.75 K, x(Ni) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:hf-ni:hfni3-rt
tdb: tdb:HfNi-01Wan-LB.tdb:HFNI3_RT, tdb:HfNi-08Zha.tdb:HFNI3_RT, tdb:HfNi-11Cac.tdb:HFNI3_RT, tdb:HfNi-18Ros.tdb:HFNI3_RT

TDB models of HFNI3_RT (4): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HFNI3_RT, type code %, sha256 1e74d0865d1d85b9…

81: PHASE HFNI3_RT % 2 1 3 !
82: CONST HFNI3_RT : HF : NI : !

HfNi-08Zha.tdb: HFNI3_RT, type code %, sha256 d63ce8bd980b5800…

79: PHASE HFNI3_RT % 2 1 3 !
80: CONST HFNI3_RT : HF : NI : !

HfNi-11Cac.tdb: HFNI3_RT, type code %, sha256 e6cae16c4cced3c0…

80: PHASE HFNI3_RT % 2 1 3 !
81: CONST HFNI3_RT : HF : NI : !

HfNi-18Ros.tdb: HFNI3_RT, type code %, sha256 24edb198273bee61…

98: PHASE HFNI3_RT % 2 1 3 !
99: CONST HFNI3_RT : HF : NI : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase

HFNI5_C15B (Hf–Ni)

Id: phase:hf-ni:hfni5-c15b; status assigned
Structure: AuBe5 · C15_b · cF24 · F-43m (216); type st:c15-b-aube5-cf24; tier A: standard phase name; confidence high
Stoichiometry: Hf 0.1667, Ni 0.8333
Stability: stable in 5 of 5 calculated diagram(s): 300–1675.31 K, x(Ni) 0.83333–0.83333
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:hf-ni:hfni5-c15b
paper: paper:10.1016/j.calphad.2011.10.003:HfNi5, paper:10.1016/j.tca.2018.08.011:HfNi5, paper:10.1016/j.tca.2018.08.011:Ni5Hf(C15b)
tdb: tdb:HfNi-01Wan-LB.tdb:HFNI5_C15B, tdb:HfNi-08Zha.tdb:HFNI5_C15B, tdb:HfNi-11Cac.tdb:HFNI5_C15B, tdb:HfNi-18Ros.tdb:HFNI5_C15B, tdb:HfNi-75Kau.tdb:HFNI5_C15B

TDB models of HFNI5_C15B (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: HFNI5_C15B, type code %, sha256 1e74d0865d1d85b9…

96: PHASE HFNI5_C15B % 2 1 5 !
97: CONST HFNI5_C15B : HF : NI : !

HfNi-08Zha.tdb: HFNI5_C15B, type code %, sha256 d63ce8bd980b5800…

94: PHASE HFNI5_C15B % 2 1 5 !
95: CONST HFNI5_C15B : HF : NI : !

HfNi-11Cac.tdb: HFNI5_C15B, type code %, sha256 e6cae16c4cced3c0…

95: PHASE HFNI5_C15B % 2 1 5 !
96: CONST HFNI5_C15B : HF : NI : !

HfNi-18Ros.tdb: HFNI5_C15B, type code %, sha256 24edb198273bee61…

113: PHASE HFNI5_C15B % 2 1 5 !
114: CONST HFNI5_C15B : HF : NI : !

HfNi-75Kau.tdb: HFNI5_C15B, type code %, sha256 899efd418770558a…

75: PHASE HFNI5_C15B % 2 1 5 !
76: CONST HFNI5_C15B : HF : NI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/j.commatsci.2016.08.042 A. Berche, J.C. Tédenac, P. Jund, Phase diagram and enthalpy of formation of Hf-Ni-Sn, Computational Materials Science 125, 271-277 (2016).
cited as the source of values for this phase

LIQUID (Hf–Ni)

Id: phase:hf-ni:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1410.87–4000 K, x(Ni) 0–1
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:hf-ni:liquid
paper: paper:10.1016/j.calphad.2011.10.003:L, paper:10.1016/j.calphad.2011.10.003:liquid
tdb: tdb:HfNi-01Wan-LB.tdb:LIQUID, tdb:HfNi-08Zha.tdb:LIQUID, tdb:HfNi-11Cac.tdb:LIQUID, tdb:HfNi-18Ros.tdb:LIQUID, tdb:HfNi-75Kau.tdb:LIQUID

TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written

HfNi-01Wan-LB.tdb: LIQUID, type code %, sha256 1e74d0865d1d85b9…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : HF NI : !

HfNi-08Zha.tdb: LIQUID, type code %, sha256 d63ce8bd980b5800…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : HF NI : !

HfNi-11Cac.tdb: LIQUID, type code %, sha256 e6cae16c4cced3c0…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : HF NI : !

HfNi-18Ros.tdb: LIQUID, type code %, sha256 24edb198273bee61…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : HF NI : !

HfNi-75Kau.tdb: LIQUID, type code %, sha256 899efd418770558a…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : HF NI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2011.10.003 G. Cacciamani, P. Riani, F. Valenza, Equilibrium between MB2 (M=Ti,Zr,Hf) UHTC and Ni: A thermodynamic database for the B–Hf–Ni–Ti–Zr system, Calphad 35, 601-619 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2007.08.009 C. Zhang, J. Zhu, Y. Yang, H.-B. Cao, F. Zhang, W.-S. Cao et al., Thermodynamic modeling and experimental investigation of the Ni-rich corner of the Ni–Al–Hf system, Intermetallics 16, 139-147 (2008).
assessment that models this phase
doi:10.1016/j.tca.2018.08.011 A.J. Ross, T. Gheno, P.K. Ray, M.J. Kramer, X.L. Liu, G. Lindwall et al., A first-principles based description of the Hf-Ni system supported by high-temperature synchrotron experiments, Thermochimica Acta 668, 142-151 (2018).
assessment that models this phase
doi:10.1179/000844375795050157 L. Kaufman, H. Nesor, Calculation of the Ni-Al-W, Ni-Al-Hf and Ni-Cr-Hf systems, Canadian Metallurgical Quarterly 14, 221-232 (1975).
assessment that models this phase
doi:10.3139/ijmr-2001-0088 T. Wang, Z.P. Jin, J.-C. Zhao, Z. Metallkd., 92, 441-46(2001).
assessment that models this phase
doi:10.1016/0925-8388(93)90281-q V.N. Yeremenko, E.L. Semenova, L.A. Tretyachenko, V.M. Petyukh, Constitution of the Hf-Ni system up to 50 at.% Ni, Journal of Alloys and Compounds 191, 117-119 (1993).
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  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}
}