Ni–Y phases

13 phases (tier A 6, tier C 4, liquid 1, needs_review 2); 13 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 · Ni–Y system page · Markdown · field reference

Phases of the Ni–Y system (13)
Phase	Structure	Basis	Stability (calculated)	TDB models
BCC_A2 phase:ni-y:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 1750.95–2499.9 K, x(Y) 0.99926–1	5
FCC_A1 phase:ni-y:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1753.83 K, x(Y) 0–0.00309	5
HCP_A3 phase:ni-y:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1751.15 K, x(Y) 0.99793–1	5
LIQUID phase:ni-y:liquid	liquid	liquid	stable in 5 of 5 calculated diagram(s): 1078.02–2500 K, x(Y) 0–1	5
NI17Y2 phase:ni-y:ni17y2		needs_review	stable in 5 of 5 calculated diagram(s): 300–1702.75 K, x(Y) 0.10526–0.16667	5
NI2Y phase:ni-y:ni2y	Ni2Tm · cF192 · F-43m (216)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1379.04 K, x(Y) 0.33333–0.33333	5
NI2Y3 phase:ni-y:ni2y3	Ni2Y3 · tP80 · P4_12_12 (92)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1098.36 K, x(Y) 0.6–0.6	5
NI3Y phase:ni-y:ni3y	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1509.61 K, x(Y) 0.25–0.25	5
NI4Y phase:ni-y:ni4y		needs_review	stable in 5 of 5 calculated diagram(s): 300–1613.47 K, x(Y) 0.2–0.2	5
NI5Y_D2D phase:ni-y:ni5y-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1702.76 K, x(Y) 0.16667–0.16667	4
NI7Y2 phase:ni-y:ni7y2	Ce2Ni7 · hP36 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1570.49 K, x(Y) 0.22222–0.22222	5
NIY_B27 phase:ni-y:niy-b27	FeB · B27 · oP8 · Pnma (62)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1344.05 K, x(Y) 0.5–0.5	5
NIY3_D011 phase:ni-y:niy3-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1180 K, x(Y) 0.75–0.75	5

BCC_A2 (Ni–Y)

Id: phase:ni-y: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): 1750.95–2499.9 K, x(Y) 0.99926–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:bcc-a2
tdb: tdb:NiY-05Du.tdb:BCC_A2, tdb:NiY-15Hua.tdb:BCC_A2, tdb:NiY-21Wan.tdb:BCC_A2, tdb:NiY-96Du-LB.tdb:BCC_A2, tdb:NiY-96Du-orig.tdb:BCC_A2

TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: BCC_A2, type code %B, sha256 bbdd62ff4a5e36e0…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : NI Y% : VA : !

NiY-15Hua.tdb: BCC_A2, type code %B, sha256 dc9a8bc028e96db6…

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

NiY-21Wan.tdb: BCC_A2, type code %B, sha256 e22ecaca9278345e…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : NI Y% : VA : !

NiY-96Du-LB.tdb: BCC_A2, type code %B, sha256 72e391ce92b82a89…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : NI Y% : VA : !

NiY-96Du-orig.tdb: BCC_A2, type code %B, sha256 60a9de8a7a15712d…

42: PHASE BCC_A2 %B 2 1 3 !
43: CONST BCC_A2 : NI Y% : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

FCC_A1 (Ni–Y)

Id: phase:ni-y: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): 300–1753.83 K, x(Y) 0–0.00309
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:fcc-a1
tdb: tdb:NiY-05Du.tdb:FCC_A1, tdb:NiY-15Hua.tdb:FCC_A1, tdb:NiY-21Wan.tdb:FCC_A1, tdb:NiY-96Du-LB.tdb:FCC_A1, tdb:NiY-96Du-orig.tdb:FCC_A1

TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: FCC_A1, type code %A, sha256 bbdd62ff4a5e36e0…

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

NiY-15Hua.tdb: FCC_A1, type code %A, sha256 dc9a8bc028e96db6…

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

NiY-21Wan.tdb: FCC_A1, type code %A, sha256 e22ecaca9278345e…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : NI% Y : VA : !

NiY-96Du-LB.tdb: FCC_A1, type code %A, sha256 72e391ce92b82a89…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : NI% Y : VA : !

NiY-96Du-orig.tdb: FCC_A1, type code %A, sha256 60a9de8a7a15712d…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : NI% Y : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

HCP_A3 (Ni–Y)

Id: phase:ni-y: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): 300–1751.15 K, x(Y) 0.99793–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:hcp-a3
tdb: tdb:NiY-05Du.tdb:HCP_A3, tdb:NiY-15Hua.tdb:HCP_A3, tdb:NiY-21Wan.tdb:HCP_A3, tdb:NiY-96Du-LB.tdb:HCP_A3, tdb:NiY-96Du-orig.tdb:HCP_A3

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

NiY-05Du.tdb: HCP_A3, type code %A, sha256 bbdd62ff4a5e36e0…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : NI Y% : VA : !

NiY-15Hua.tdb: HCP_A3, type code %A, sha256 dc9a8bc028e96db6…

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

NiY-21Wan.tdb: HCP_A3, type code %A, sha256 e22ecaca9278345e…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : NI Y% : VA : !

NiY-96Du-LB.tdb: HCP_A3, type code %A, sha256 72e391ce92b82a89…

46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : NI Y% : VA : !

NiY-96Du-orig.tdb: HCP_A3, type code %A, sha256 60a9de8a7a15712d…

47: PHASE HCP_A3 %A 2 1 0.5 !
48: CONST HCP_A3 : NI Y% : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

LIQUID (Ni–Y)

Id: phase:ni-y:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1078.02–2500 K, x(Y) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:liquid
tdb: tdb:NiY-05Du.tdb:LIQUID, tdb:NiY-15Hua.tdb:LIQUID, tdb:NiY-21Wan.tdb:LIQUID, tdb:NiY-96Du-LB.tdb:LIQUID, tdb:NiY-96Du-orig.tdb:LIQUID

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

NiY-05Du.tdb: LIQUID, type code %, sha256 bbdd62ff4a5e36e0…

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

NiY-15Hua.tdb: LIQUID, type code %, sha256 dc9a8bc028e96db6…

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

NiY-21Wan.tdb: LIQUID, type code %, sha256 e22ecaca9278345e…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : NI Y : !

NiY-96Du-LB.tdb: LIQUID, type code %, sha256 72e391ce92b82a89…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : NI Y : !

NiY-96Du-orig.tdb: LIQUID, type code %, sha256 60a9de8a7a15712d…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : NI Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI17Y2 (Ni–Y)

Id: phase:ni-y:ni17y2; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_rows_disagree
Candidate (dft_mp): P6/mmm (191) — on-hull MP YNi5 at x(Y)=0.1667
Candidate (dft_oqmd): P6/mmm (191) — on-hull OQMD Ni5 Y1 at x(Y)=0.1667
Candidate (sgte_mmc2): CaCu5 · D2_d · hP6 · P6/mmm (191) — Hallstedt 2025 mmc2 row for NI17Y2: Ni5Y, see also Fe17Lu2
Candidate (sgte_mmc2): Ni17Th2 · hP38 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for NI17Y2: Ni17Y2
Candidate (sgte_mmc2): Ni17Th2 · hP38 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for NI17Y2: Ni17Y2 (see also CaCu5)
Candidate (tdb_comment): CaCu5 · hP6 · P6/mmm, D2_d — NiY-05Du.tdb: 'Prototype CaCu5 (hP6, P6/mmm, D2_d), Ni5Y'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — NiY-05Du.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), Ni17Y2'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — NiY-15Hua.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc)'
Stability: stable in 5 of 5 calculated diagram(s): 300–1702.75 K, x(Y) 0.10526–0.16667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni17y2
tdb: tdb:NiY-05Du.tdb:NI17Y2, tdb:NiY-15Hua.tdb:NI17Y2, tdb:NiY-21Wan.tdb:NI17Y2, tdb:NiY-96Du-LB.tdb:NI17Y2, tdb:NiY-96Du-orig.tdb:NI17Y2

TDB models of NI17Y2 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI17Y2, type code %A, sha256 bbdd62ff4a5e36e0…

49: PHASE NI17Y2 %A 3 1 2 15 !
50: CONST NI17Y2 : NI2 Y : Y : NI : !

NiY-15Hua.tdb: NI17Y2, type code %, sha256 dc9a8bc028e96db6…

46: PHASE NI17Y2 % 2 17 2 !
47: CONST NI17Y2 : NI : Y : !

NiY-21Wan.tdb: NI17Y2, type code %, sha256 e22ecaca9278345e…

47: PHASE NI17Y2 % 3 1 2 15 !
48: CONST NI17Y2 : NI2 Y : Y : NI : !

NiY-96Du-LB.tdb: NI17Y2, type code %, sha256 72e391ce92b82a89…

51: PHASE NI17Y2 % 2 17 2 !
52: CONST NI17Y2 : NI : Y : !

NiY-96Du-orig.tdb: NI17Y2, type code %, sha256 60a9de8a7a15712d…

52: PHASE NI17Y2 % 2 17 2 !
53: CONST NI17Y2 : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI2Y (Ni–Y)

Id: phase:ni-y:ni2y; status assigned
Structure: Ni2Tm · cF192 · F-43m (216); type st:ni2tm-cf192; 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_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ni 0.6667, Y 0.3333
Stability: stable in 5 of 5 calculated diagram(s): 300–1379.04 K, x(Y) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni2y
tdb: tdb:NiY-05Du.tdb:NI2Y, tdb:NiY-15Hua.tdb:NI2Y, tdb:NiY-21Wan.tdb:NI2Y, tdb:NiY-96Du-LB.tdb:NI2Y, tdb:NiY-96Du-orig.tdb:NI2Y

TDB models of NI2Y (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI2Y, type code %, sha256 bbdd62ff4a5e36e0…

69: PHASE NI2Y % 2 2 1 !
70: CONST NI2Y : NI : Y : !

NiY-15Hua.tdb: NI2Y, type code %, sha256 dc9a8bc028e96db6…

71: PHASE NI2Y % 2 2 1 !
72: CONST NI2Y : NI : Y : !

NiY-21Wan.tdb: NI2Y, type code %, sha256 e22ecaca9278345e…

72: PHASE NI2Y % 2 2 1 !
73: CONST NI2Y : NI : Y : !

NiY-96Du-LB.tdb: NI2Y, type code %, sha256 72e391ce92b82a89…

76: PHASE NI2Y % 2 2 1 !
77: CONST NI2Y : NI : Y : !

NiY-96Du-orig.tdb: NI2Y, type code %, sha256 60a9de8a7a15712d…

77: PHASE NI2Y % 2 2 1 !
78: CONST NI2Y : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI2Y3 (Ni–Y)

Id: phase:ni-y:ni2y3; status assigned
Structure: Ni2Y3 · tP80 · P4_12_12 (92); type st:ni2y3-tp80; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ni 0.4000, Y 0.6000
Stability: stable in 5 of 5 calculated diagram(s): 300–1098.36 K, x(Y) 0.6–0.6
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni2y3
tdb: tdb:NiY-05Du.tdb:NI2Y3, tdb:NiY-15Hua.tdb:NI2Y3, tdb:NiY-21Wan.tdb:NI2Y3, tdb:NiY-96Du-LB.tdb:NI2Y3, tdb:NiY-96Du-orig.tdb:NI2Y3

TDB models of NI2Y3 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI2Y3, type code %, sha256 bbdd62ff4a5e36e0…

79: PHASE NI2Y3 % 2 2 3 !
80: CONST NI2Y3 : NI : Y : !

NiY-15Hua.tdb: NI2Y3, type code %, sha256 dc9a8bc028e96db6…

81: PHASE NI2Y3 % 2 2 3 !
82: CONST NI2Y3 : NI : Y : !

NiY-21Wan.tdb: NI2Y3, type code %, sha256 e22ecaca9278345e…

82: PHASE NI2Y3 % 2 2 3 !
83: CONST NI2Y3 : NI : Y : !

NiY-96Du-LB.tdb: NI2Y3, type code %, sha256 72e391ce92b82a89…

86: PHASE NI2Y3 % 2 2 3 !
87: CONST NI2Y3 : NI : Y : !

NiY-96Du-orig.tdb: NI2Y3, type code %, sha256 60a9de8a7a15712d…

87: PHASE NI2Y3 % 2 2 3 !
88: CONST NI2Y3 : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI3Y (Ni–Y)

Id: phase:ni-y:ni3y; status assigned
Structure: Ni3Pu · hR12 · R-3m (166); type st:ni3pu-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 (dft_space_group_166_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ni 0.7500, Y 0.2500
Stability: stable in 5 of 5 calculated diagram(s): 300–1509.61 K, x(Y) 0.25–0.25
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni3y
tdb: tdb:NiY-05Du.tdb:NI3Y, tdb:NiY-15Hua.tdb:NI3Y, tdb:NiY-21Wan.tdb:NI3Y, tdb:NiY-96Du-LB.tdb:NI3Y, tdb:NiY-96Du-orig.tdb:NI3Y

TDB models of NI3Y (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI3Y, type code %A, sha256 bbdd62ff4a5e36e0…

64: PHASE NI3Y %A 2 3 1 !
65: CONST NI3Y : NI : Y : !

NiY-15Hua.tdb: NI3Y, type code %A, sha256 dc9a8bc028e96db6…

66: PHASE NI3Y %A 2 3 1 !
67: CONST NI3Y : NI : Y : !

NiY-21Wan.tdb: NI3Y, type code %, sha256 e22ecaca9278345e…

67: PHASE NI3Y % 2 3 1 !
68: CONST NI3Y : NI : Y : !

NiY-96Du-LB.tdb: NI3Y, type code %, sha256 72e391ce92b82a89…

71: PHASE NI3Y % 2 3 1 !
72: CONST NI3Y : NI : Y : !

NiY-96Du-orig.tdb: NI3Y, type code %, sha256 60a9de8a7a15712d…

72: PHASE NI3Y % 2 3 1 !
73: CONST NI3Y : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI4Y (Ni–Y)

Id: phase:ni-y:ni4y; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Ni4Y) — Hallstedt 2025 mmc2 row for NI4Y: Ni4Y
Stoichiometry: Ni 0.8000, Y 0.2000
Stability: stable in 5 of 5 calculated diagram(s): 300–1613.47 K, x(Y) 0.2–0.2
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni4y
tdb: tdb:NiY-05Du.tdb:NI4Y, tdb:NiY-15Hua.tdb:NI4Y, tdb:NiY-21Wan.tdb:NI4Y, tdb:NiY-96Du-LB.tdb:NI4Y, tdb:NiY-96Du-orig.tdb:NI4Y

TDB models of NI4Y (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI4Y, type code %, sha256 bbdd62ff4a5e36e0…

54: PHASE NI4Y % 2 4 1 !
55: CONST NI4Y : NI : Y : !

NiY-15Hua.tdb: NI4Y, type code %, sha256 dc9a8bc028e96db6…

56: PHASE NI4Y % 2 4 1 !
57: CONST NI4Y : NI : Y : !

NiY-21Wan.tdb: NI4Y, type code %, sha256 e22ecaca9278345e…

57: PHASE NI4Y % 2 4 1 !
58: CONST NI4Y : NI : Y : !

NiY-96Du-LB.tdb: NI4Y, type code %, sha256 72e391ce92b82a89…

61: PHASE NI4Y % 2 4 1 !
62: CONST NI4Y : NI : Y : !

NiY-96Du-orig.tdb: NI4Y, type code %, sha256 60a9de8a7a15712d…

62: PHASE NI4Y % 2 4 1 !
63: CONST NI4Y : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI5Y_D2D (Ni–Y)

Id: phase:ni-y:ni5y-d2d; status assigned
Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type st:d2-d-cacu5-hp6; tier A: standard phase name; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 300–1702.76 K, x(Y) 0.16667–0.16667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ni-y:ni5y-d2d
tdb: tdb:NiY-15Hua.tdb:NI5Y_D2D, tdb:NiY-21Wan.tdb:NI5Y_D2D, tdb:NiY-96Du-LB.tdb:NI5Y_D2D, tdb:NiY-96Du-orig.tdb:NI5Y_D2D

TDB models of NI5Y_D2D (4): PHASE and CONSTITUENT statements as written

NiY-15Hua.tdb: NI5Y_D2D, type code %, sha256 dc9a8bc028e96db6…

51: PHASE NI5Y_D2D % 2 5 1 !
52: CONST NI5Y_D2D : NI : Y : !

NiY-21Wan.tdb: NI5Y_D2D, type code %, sha256 e22ecaca9278345e…

52: PHASE NI5Y_D2D % 3 1 4 1 !
53: CONST NI5Y_D2D : Y : NI : NI VA : !

NiY-96Du-LB.tdb: NI5Y_D2D, type code %, sha256 72e391ce92b82a89…

56: PHASE NI5Y_D2D % 2 5 1 !
57: CONST NI5Y_D2D : NI : Y : !

NiY-96Du-orig.tdb: NI5Y_D2D, type code %, sha256 60a9de8a7a15712d…

57: PHASE NI5Y_D2D % 2 5 1 !
58: CONST NI5Y_D2D : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NI7Y2 (Ni–Y)

Id: phase:ni-y:ni7y2; status assigned
Structure: Ce2Ni7 · hP36 · P6_3/mmc (194); type st:ce2ni7-hp36; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ni 0.7778, Y 0.2222
Stability: stable in 5 of 5 calculated diagram(s): 300–1570.49 K, x(Y) 0.22222–0.22222
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ni-y:ni7y2
tdb: tdb:NiY-05Du.tdb:NI7Y2, tdb:NiY-15Hua.tdb:NI7Y2, tdb:NiY-21Wan.tdb:NI7Y2, tdb:NiY-96Du-LB.tdb:NI7Y2, tdb:NiY-96Du-orig.tdb:NI7Y2

TDB models of NI7Y2 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NI7Y2, type code %A, sha256 bbdd62ff4a5e36e0…

59: PHASE NI7Y2 %A 2 7 2 !
60: CONST NI7Y2 : NI : Y : !

NiY-15Hua.tdb: NI7Y2, type code %A, sha256 dc9a8bc028e96db6…

61: PHASE NI7Y2 %A 2 7 2 !
62: CONST NI7Y2 : NI : Y : !

NiY-21Wan.tdb: NI7Y2, type code %, sha256 e22ecaca9278345e…

62: PHASE NI7Y2 % 2 7 2 !
63: CONST NI7Y2 : NI : Y : !

NiY-96Du-LB.tdb: NI7Y2, type code %, sha256 72e391ce92b82a89…

66: PHASE NI7Y2 % 2 7 2 !
67: CONST NI7Y2 : NI : Y : !

NiY-96Du-orig.tdb: NI7Y2, type code %, sha256 60a9de8a7a15712d…

67: PHASE NI7Y2 % 2 7 2 !
68: CONST NI7Y2 : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NIY_B27 (Ni–Y)

Id: phase:ni-y:niy-b27; status assigned
Structure: FeB · B27 · oP8 · Pnma (62); type st:b27-feb-op8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaacam and oqmd-17852, space group 62
Stoichiometry: Ni 0.5000, Y 0.5000
Stability: stable in 5 of 5 calculated diagram(s): 300–1344.05 K, x(Y) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:ni-y:niy-b27
mp: mp:mp-aaaaacam
oqmd: oqmd:oqmd-17852
tdb: tdb:NiY-05Du.tdb:NIY_B27, tdb:NiY-15Hua.tdb:NIY_B27, tdb:NiY-21Wan.tdb:NIY_B27, tdb:NiY-96Du-LB.tdb:NIY_B27, tdb:NiY-96Du-orig.tdb:NIY_B27

TDB models of NIY_B27 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NIY_B27, type code %, sha256 bbdd62ff4a5e36e0…

74: PHASE NIY_B27 % 2 1 1 !
75: CONST NIY_B27 : NI : Y : !

NiY-15Hua.tdb: NIY_B27, type code %, sha256 dc9a8bc028e96db6…

76: PHASE NIY_B27 % 2 1 1 !
77: CONST NIY_B27 : NI : Y : !

NiY-21Wan.tdb: NIY_B27, type code %, sha256 e22ecaca9278345e…

77: PHASE NIY_B27 % 2 1 1 !
78: CONST NIY_B27 : NI : Y : !

NiY-96Du-LB.tdb: NIY_B27, type code %, sha256 72e391ce92b82a89…

81: PHASE NIY_B27 % 2 1 1 !
82: CONST NIY_B27 : NI : Y : !

NiY-96Du-orig.tdb: NIY_B27, type code %, sha256 60a9de8a7a15712d…

82: PHASE NIY_B27 % 2 1 1 !
83: CONST NIY_B27 : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models this phase

NIY3_D011 (Ni–Y)

Id: phase:ni-y:niy3-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaackxoj and oqmd-31307, space group 62
Stoichiometry: Ni 0.2500, Y 0.7500
Stability: stable in 5 of 5 calculated diagram(s): 300–1180 K, x(Y) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:ni-y:niy3-d011
mp: mp:mp-aaackxoj
oqmd: oqmd:oqmd-31307
tdb: tdb:NiY-05Du.tdb:NIY3_D011, tdb:NiY-15Hua.tdb:NIY3_D011, tdb:NiY-21Wan.tdb:NIY3_D011, tdb:NiY-96Du-LB.tdb:NIY3_D011, tdb:NiY-96Du-orig.tdb:NIY3_D011

TDB models of NIY3_D011 (5): PHASE and CONSTITUENT statements as written

NiY-05Du.tdb: NIY3_D011, type code %, sha256 bbdd62ff4a5e36e0…

84: PHASE NIY3_D011 % 2 1 3 !
85: CONST NIY3_D011 : NI : Y : !

NiY-15Hua.tdb: NIY3_D011, type code %, sha256 dc9a8bc028e96db6…

86: PHASE NIY3_D011 % 2 1 3 !
87: CONST NIY3_D011 : NI : Y : !

NiY-21Wan.tdb: NIY3_D011, type code %, sha256 e22ecaca9278345e…

87: PHASE NIY3_D011 % 2 1 3 !
88: CONST NIY3_D011 : NI : Y : !

NiY-96Du-LB.tdb: NIY3_D011, type code %, sha256 72e391ce92b82a89…

91: PHASE NIY3_D011 % 2 1 3 !
92: CONST NIY3_D011 : NI : Y : !

NiY-96Du-orig.tdb: NIY3_D011, type code %, sha256 60a9de8a7a15712d…

92: PHASE NIY3_D011 % 2 1 3 !
93: CONST NIY3_D011 : NI : Y : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-015-0390-6 Jiapeng Huang, Bin Yang, Huiming Chen, Hang Wang, Thermodynamic Optimisation of the Ni-Al-Y Ternary System, J. Phase Equilib. Diffus. 36, 357-365 (2015).
assessment that models this phase
doi:10.1016/j.calphad.2020.102214 Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021).
assessment that models this phase
doi:10.1016/S0925-8388(96)02436-X Z. Du, W. Zhang, J. Alloys Compd., 245, 164-67(1996).
assessment that models 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}
}