Fe–Y phases

10 phases (tier A 5, tier C 1, liquid 1, needs_review 3); 10 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 · Fe–Y system page · Markdown · field reference

Phases of the Fe–Y system (10)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:fe-y:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–2500 K, x(Y) 0–1	57	5
FCC_A1 phase:fe-y:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 1169.86–1672.05 K, x(Y) 0–0.00104	56	5
FE17Y2 phase:fe-y:fe17y2		needs_review	stable in 4 of 4 calculated diagram(s): 300–2500 K, x(Y) 0.10526–0.10526	136	4
FE17Y2_HT phase:fe-y:fe17y2-ht		needs_review	stable in 1 of 1 calculated diagram(s): 1138.93–1674.71 K, x(Y) 0.10526–0.10526	17	1
FE17Y2_LT phase:fe-y:fe17y2-lt		needs_review	stable in 1 of 1 calculated diagram(s): 300–1138.93 K, x(Y) 0.10526–0.10526	2	1
FE23Y6_D8A phase:fe-y:fe23y6-d8a	Mn23Th6 · D8_a · cF116 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1622.45 K, x(Y) 0.19064–0.21318	91	5
FE2Y_C15 phase:fe-y:fe2y-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1420.94 K, x(Y) 0.31034–0.33732	62	5
FE3Y phase:fe-y:fe3y	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–1624.4 K, x(Y) 0.25–0.25	117	5
HCP_A3 phase:fe-y:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1786.15 K, x(Y) 0.98584–1	29	5
LIQUID phase:fe-y:liquid	liquid	liquid	stable in 5 of 5 calculated diagram(s): 1119.28–2500 K, x(Y) 0–1	207	5

BCC_A2 (Fe–Y)

Id: phase:fe-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): 300–2500 K, x(Y) 0–1
Literature: 57 values (57 accepted) from 4 papers
Interactive: phase registry entry

Names (18): corpus: corpus:phase:fe-y:bcc-a2
paper: paper:10.1007/s11669-017-0574-3:α Fe, paper:10.1007/s11669-017-0574-3:β Y, paper:10.1007/s11669-017-0574-3:δ Fe, paper:10.1007/s11669-021-00887-9:αFe, paper:10.1007/s11669-021-00887-9:βY, paper:10.1007/s11669-021-00887-9:δFe, paper:10.1016/j.jallcom.2013.07.010:α Fe, paper:10.1016/j.jallcom.2013.07.010:βY, paper:10.1016/j.jallcom.2013.07.010:δ Fe, paper:10.1016/j.jallcom.2013.07.010:δFe, paper:10.20517/jmi.2023.08:bcc(α-Fe), paper:10.20517/jmi.2023.08:bcc(δ-Fe)
tdb: tdb:FeY-14Kar.tdb:BCC_A2, tdb:FeY-17Sae.tdb:BCC_A2, tdb:FeY-21Fan.tdb:BCC_A2, tdb:FeY-23Ye.tdb:BCC_A2, tdb:FeY-97Du.tdb:BCC_A2

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

FeY-14Kar.tdb: BCC_A2, type code %B, sha256 0e4a9e2361dc9c98…

45: PHASE BCC_A2 %B 2 1 3 !
46: CONST BCC_A2 : FE Y : VA : !

FeY-17Sae.tdb: BCC_A2, type code %B, sha256 d5fb4919023990bf…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : FE Y : VA : !

FeY-21Fan.tdb: BCC_A2, type code %B, sha256 d085f7eb5ccf15a0…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : FE Y : VA : !

FeY-23Ye.tdb: BCC_A2, type code %B, sha256 88f70e0778e85ffb…

39: PHASE BCC_A2 %B 2 1 3 !
40: CONST BCC_A2 : FE Y : VA : !

FeY-97Du.tdb: BCC_A2, type code %B, sha256 6ffcbf8e63537db7…

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

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1016/0364-5916(91)90030-n A.T. Dinsdale, SGTE data for pure elements, Calphad 15, 317-425 (1991).
cited as the source of values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase

FCC_A1 (Fe–Y)

Id: phase:fe-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): 1169.86–1672.05 K, x(Y) 0–0.00104
Literature: 56 values (56 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:fe-y:fcc-a1
paper: paper:10.1007/s11669-017-0574-3:γ Fe, paper:10.1007/s11669-021-00887-9:γFe, paper:10.1016/j.jallcom.2013.07.010:γ Fe, paper:10.1016/j.jallcom.2013.07.010:γFe, paper:10.20517/jmi.2023.08:fcc(γ-Fe)
tdb: tdb:FeY-14Kar.tdb:FCC_A1, tdb:FeY-17Sae.tdb:FCC_A1, tdb:FeY-21Fan.tdb:FCC_A1, tdb:FeY-23Ye.tdb:FCC_A1, tdb:FeY-97Du.tdb:FCC_A1

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

FeY-14Kar.tdb: FCC_A1, type code %A, sha256 0e4a9e2361dc9c98…

40: PHASE FCC_A1 %A 2 1 1 !
41: CONST FCC_A1 : FE% Y : VA : !

FeY-17Sae.tdb: FCC_A1, type code %A, sha256 d5fb4919023990bf…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : FE% Y : VA : !

FeY-21Fan.tdb: FCC_A1, type code %A, sha256 d085f7eb5ccf15a0…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : FE% Y : VA : !

FeY-23Ye.tdb: FCC_A1, type code %A, sha256 88f70e0778e85ffb…

34: PHASE FCC_A1 %A 2 1 1 !
35: CONST FCC_A1 : FE% Y : VA : !

FeY-97Du.tdb: FCC_A1, type code %A, sha256 6ffcbf8e63537db7…

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

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1016/0364-5916(91)90030-n A.T. Dinsdale, SGTE data for pure elements, Calphad 15, 317-425 (1991).
cited as the source of values for this phase

FE17Y2 (Fe–Y)

Id: phase:fe-y:fe17y2; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_rows_disagree
Candidate (literature_printed): Ni17Th2 · hP38 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Ni17Th2 · hP38 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for FE17Y2: Fe17Y2 (high T), see also Th2Zn17
Candidate (sgte_mmc2): Th2Zn17 · hR19 · R-3m (166) — Hallstedt 2025 mmc2 row for FE17Y2: Fe17Y2 (low T), see also Ni17Th2
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — FeY-17Sae.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), high T'
Candidate (tdb_comment): Th2Zn17 · hR19 · R-3m — FeY-17Sae.tdb: 'Prototype Th2Zn17 (hR19, R-3m), low T'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — FeY-21Fan.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), high T'
Candidate (tdb_comment): Th2Zn17 · hR19 · R-3m — FeY-21Fan.tdb: 'Prototype Th2Zn17 (hR19, R-3m), low T'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — FeY-23Ye.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), high T'
Stoichiometry: Fe 0.8947, Y 0.1053
Stability: stable in 4 of 4 calculated diagram(s): 300–2500 K, x(Y) 0.10526–0.10526
Literature: 136 values (132 accepted) from 4 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-y:fe17y2
paper: paper:10.1007/s11669-017-0574-3:Fe17Y2, paper:10.1007/s11669-021-00887-9:Fe17Y2, paper:10.1016/j.jallcom.2013.07.010:Fe17Y2, paper:10.20517/jmi.2023.08:Fe17Y2
tdb: tdb:FeY-17Sae.tdb:FE17Y2, tdb:FeY-21Fan.tdb:FE17Y2, tdb:FeY-23Ye.tdb:FE17Y2, tdb:FeY-97Du.tdb:FE17Y2

TDB models of FE17Y2 (4): PHASE and CONSTITUENT statements as written

FeY-17Sae.tdb: FE17Y2, type code %A, sha256 d5fb4919023990bf…

44: PHASE FE17Y2 %A 2 17 2 !
45: CONST FE17Y2 : FE : Y : !

FeY-21Fan.tdb: FE17Y2, type code %A, sha256 d085f7eb5ccf15a0…

43: PHASE FE17Y2 %A 2 17 2 !
44: CONST FE17Y2 : FE : Y : !

FeY-23Ye.tdb: FE17Y2, type code %A, sha256 88f70e0778e85ffb…

50: PHASE FE17Y2 %A 2 17 2 !
51: CONST FE17Y2 : FE : Y : !

FeY-97Du.tdb: FE17Y2, type code %A, sha256 6ffcbf8e63537db7…

52: PHASE FE17Y2 %A 2 17 2 !
53: CONST FE17Y2 : FE : Y : !

Example references (10 of 12; assessments first):

doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
cited as the source of values for this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1016/0364-5916(84)90033-6 P.R. Subramanian, J.F. Smith, Thermodynamics of Formation of Y-Fe Alloys. Calphad 8(4), 295–305 (1984)
cited as the source of values for this phase
doi:10.1021/je7003353 D. Gozzi, M. Iervolino, A. Latini, Thermodynamics of Fe-Rich Intermetallics along the Rare Earth Series, J. Chem. Eng. Data 52, 2350-2358 (2007).
cited as the source of values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1103/physrevb.70.144107 M. Mihalkovič, M. Widom, Ab initiocalculations of cohesive energies of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow></mml:math>-based glass-forming alloys, Phys. Rev. B 70 (2004).
cited as the source of values for this phase
doi:10.1016/0364-5916(91)90030-n A.T. Dinsdale, SGTE data for pure elements, Calphad 15, 317-425 (1991).
cited as the source of values for this phase
doi:10.1038/npjcompumats.2015.10 Scott Kirklin, James E Saal, Bryce Meredig, Alex Thompson, Jeff W Doak, Muratahan Aykol et al., The Open Quantum Materials Database (OQMD): assessing the accuracy of DFT formation energies, npj Comput Mater 1 (2015).
cited as the source of values for this phase

FE17Y2_HT (Fe–Y)

Id: phase:fe-y:fe17y2-ht; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — FeY-14Kar.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), high T'
Stoichiometry: Fe 0.8947, Y 0.1053
Stability: stable in 1 of 1 calculated diagram(s): 1138.93–1674.71 K, x(Y) 0.10526–0.10526
Literature: 17 values (17 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:fe-y:fe17y2-ht
paper: paper:10.1016/j.jallcom.2013.07.010:Fe17Y2, paper:10.1016/j.jallcom.2013.07.010:Fe17Y2_HT
tdb: tdb:FeY-14Kar.tdb:FE17Y2_HT

TDB models of FE17Y2_HT (1): PHASE and CONSTITUENT statements as written

FeY-14Kar.tdb: FE17Y2_HT, type code %, sha256 0e4a9e2361dc9c98…

60: PHASE FE17Y2_HT % 2 17 2 !
61: CONST FE17Y2_HT : FE : Y : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; reports values for this phase

FE17Y2_LT (Fe–Y)

Id: phase:fe-y:fe17y2-lt; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (tdb_comment): Th2Zn17 · hR19 · R-3m — FeY-14Kar.tdb: 'Prototype Th2Zn17 (hR19, R-3m), low T'
Stoichiometry: Fe 0.8947, Y 0.1053
Stability: stable in 1 of 1 calculated diagram(s): 300–1138.93 K, x(Y) 0.10526–0.10526
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:fe-y:fe17y2-lt
paper: paper:10.1016/j.jallcom.2013.07.010:Fe17Y2_LT
tdb: tdb:FeY-14Kar.tdb:FE17Y2_LT

TDB models of FE17Y2_LT (1): PHASE and CONSTITUENT statements as written

FeY-14Kar.tdb: FE17Y2_LT, type code %A, sha256 0e4a9e2361dc9c98…

55: PHASE FE17Y2_LT %A 2 17 2 !
56: CONST FE17Y2_LT : FE : Y : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; reports values for this phase

FE23Y6_D8A (Fe–Y)

Id: phase:fe-y:fe23y6-d8a; status assigned
Structure: Mn23Th6 · D8_a · cF116 · Fm-3m (225); type st:d8-a-mn23th6-cf116; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in FeY-14Kar.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeY-17Sae.tdb also describes the disordered state
Stability: stable in 5 of 5 calculated diagram(s): 300–1622.45 K, x(Y) 0.19064–0.21318
Literature: 91 values (91 accepted) from 4 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:fe-y:fe23y6-d8a
paper: paper:10.1007/s11669-017-0574-3:Fe23Y6, paper:10.1007/s11669-021-00887-9:Fe23Y6, paper:10.1016/j.jallcom.2013.07.010:Fe23Y6, paper:10.20517/jmi.2023.08:Fe23Y6
tdb: tdb:FeY-14Kar.tdb:FE23Y6_D8A, tdb:FeY-17Sae.tdb:FE23Y6_D8A, tdb:FeY-21Fan.tdb:FE23Y6_D8A, tdb:FeY-23Ye.tdb:FE23Y6_D8A, tdb:FeY-97Du.tdb:FE23Y6_D8A

TDB models of FE23Y6_D8A (5): PHASE and CONSTITUENT statements as written

FeY-14Kar.tdb: FE23Y6_D8A, type code %A, sha256 0e4a9e2361dc9c98…

65: PHASE FE23Y6_D8A %A 2 23 6 !
66: CONST FE23Y6_D8A : FE% Y : FE Y% : !

FeY-17Sae.tdb: FE23Y6_D8A, type code %A, sha256 d5fb4919023990bf…

49: PHASE FE23Y6_D8A %A 2 23 6 !
50: CONST FE23Y6_D8A : FE% Y : FE Y% : !

FeY-21Fan.tdb: FE23Y6_D8A, type code %A, sha256 d085f7eb5ccf15a0…

48: PHASE FE23Y6_D8A %A 2 23 6 !
49: CONST FE23Y6_D8A : FE : Y : !

FeY-23Ye.tdb: FE23Y6_D8A, type code %A, sha256 88f70e0778e85ffb…

55: PHASE FE23Y6_D8A %A 2 23 6 !
56: CONST FE23Y6_D8A : FE : Y : !

FeY-97Du.tdb: FE23Y6_D8A, type code %A, sha256 6ffcbf8e63537db7…

57: PHASE FE23Y6_D8A %A 2 23 6 !
58: CONST FE23Y6_D8A : FE : Y : !

Example references (10 of 10; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1016/0364-5916(84)90033-6 P.R. Subramanian, J.F. Smith, Thermodynamics of Formation of Y-Fe Alloys. Calphad 8(4), 295–305 (1984)
cited as the source of values for this phase
doi:10.1038/npjcompumats.2015.10 Scott Kirklin, James E Saal, Bryce Meredig, Alex Thompson, Jeff W Doak, Muratahan Aykol et al., The Open Quantum Materials Database (OQMD): assessing the accuracy of DFT formation energies, npj Comput Mater 1 (2015).
cited as the source of values for this phase
doi:10.1063/1.4812323 Anubhav Jain, Shyue Ping Ong, Geoffroy Hautier, Wei Chen, William Davidson Richards, Stephen Dacek et al., Commentary: The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013).
cited as the source of values for this phase
doi:10.1088/0305-4608/15/7/010 J Inoue, M Shimizu, Electronic structure and magnetic properties of Y-Co, Y-Fe and Y-Mn intermetallic compounds, J. Phys. F: Met. Phys. 15, 1511-1524 (1985).
cited as the source of values for this phase
doi:10.1103/physrevb.70.144107 M. Mihalkovič, M. Widom, Ab initiocalculations of cohesive energies of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow></mml:math>-based glass-forming alloys, Phys. Rev. B 70 (2004).
cited as the source of values for this phase

FE2Y_C15 (Fe–Y)

Id: phase:fe-y:fe2y-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in FeY-17Sae.tdb also describes the disordered state
Stability: stable in 5 of 5 calculated diagram(s): 300–1420.94 K, x(Y) 0.31034–0.33732
Literature: 62 values (62 accepted) from 4 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:fe-y:fe2y-c15
paper: paper:10.1007/s11669-017-0574-3:Fe2Y, paper:10.1007/s11669-021-00887-9:Fe2Y, paper:10.1016/j.jallcom.2013.07.010:Fe2Y, paper:10.20517/jmi.2023.08:Fe2Y
tdb: tdb:FeY-14Kar.tdb:FE2Y_C15, tdb:FeY-17Sae.tdb:FE2Y_C15, tdb:FeY-21Fan.tdb:FE2Y_C15, tdb:FeY-23Ye.tdb:FE2Y_C15, tdb:FeY-97Du.tdb:FE2Y_C15

TDB models of FE2Y_C15 (5): PHASE and CONSTITUENT statements as written

FeY-14Kar.tdb: FE2Y_C15, type code %A, sha256 0e4a9e2361dc9c98…

75: PHASE FE2Y_C15 %A 2 2 1 !
76: CONST FE2Y_C15 : FE : FE Y% : !

FeY-17Sae.tdb: FE2Y_C15, type code %A, sha256 d5fb4919023990bf…

59: PHASE FE2Y_C15 %A 2 2 1 !
60: CONST FE2Y_C15 : FE% Y : FE Y% : !

FeY-21Fan.tdb: FE2Y_C15, type code %A, sha256 d085f7eb5ccf15a0…

58: PHASE FE2Y_C15 %A 2 2 1 !
59: CONST FE2Y_C15 : FE : Y : !

FeY-23Ye.tdb: FE2Y_C15, type code %A, sha256 88f70e0778e85ffb…

65: PHASE FE2Y_C15 %A 2 2 1 !
66: CONST FE2Y_C15 : FE : Y : !

FeY-97Du.tdb: FE2Y_C15, type code %A, sha256 6ffcbf8e63537db7…

67: PHASE FE2Y_C15 %A 2 2 1 !
68: CONST FE2Y_C15 : FE : Y : !

Example references (10 of 12; assessments first):

doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1016/0364-5916(84)90033-6 P.R. Subramanian, J.F. Smith, Thermodynamics of Formation of Y-Fe Alloys. Calphad 8(4), 295–305 (1984)
cited as the source of values for this phase
doi:10.1016/0022-5088(83)90138-8 G.K. Shenoy, B. Schuttler, P.J. Viccaro, D. Niarchos, Magnetic properties of intermetallic hydrides, Journal of the Less Common Metals 94, 37-44 (1983).
cited as the source of values for this phase
doi:10.1016/0038-1098(76)91181-9 K.H.J. Buschow, Hydrogen absorption and its effect on the magnetic properties of rare-earth iron intermetallics, Solid State Communications 19, 421-423 (1976).
cited as the source of values for this phase
doi:10.1016/j.jmmm.2015.12.026 Wenxu Zhang, Wanli Zhang, Collapse of the magnetic moment under pressure of AFe2 (A=Y, Zr, Lu and Hf) in the cubic Laves phase, Journal of Magnetism and Magnetic Materials 404, 83-90 (2016).
cited as the source of values for this phase
doi:10.1038/npjcompumats.2015.10 Scott Kirklin, James E Saal, Bryce Meredig, Alex Thompson, Jeff W Doak, Muratahan Aykol et al., The Open Quantum Materials Database (OQMD): assessing the accuracy of DFT formation energies, npj Comput Mater 1 (2015).
cited as the source of values for this phase

FE3Y (Fe–Y)

Id: phase:fe-y:fe3y; 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: Fe 0.7500, Y 0.2500
Stability: stable in 5 of 5 calculated diagram(s): 300–1624.4 K, x(Y) 0.25–0.25
Literature: 117 values (115 accepted) from 4 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:fe-y:fe3y
paper: paper:10.1007/s11669-017-0574-3:Fe3Y, paper:10.1007/s11669-021-00887-9:Fe3Y, paper:10.1016/j.jallcom.2013.07.010:Fe3Y, paper:10.20517/jmi.2023.08:Fe3Y
tdb: tdb:FeY-14Kar.tdb:FE3Y, tdb:FeY-17Sae.tdb:FE3Y, tdb:FeY-21Fan.tdb:FE3Y, tdb:FeY-23Ye.tdb:FE3Y, tdb:FeY-97Du.tdb:FE3Y

TDB models of FE3Y (5): PHASE and CONSTITUENT statements as written

FeY-14Kar.tdb: FE3Y, type code %A, sha256 0e4a9e2361dc9c98…

70: PHASE FE3Y %A 2 3 1 !
71: CONST FE3Y : FE : Y : !

FeY-17Sae.tdb: FE3Y, type code %A, sha256 d5fb4919023990bf…

54: PHASE FE3Y %A 2 3 1 !
55: CONST FE3Y : FE : Y : !

FeY-21Fan.tdb: FE3Y, type code %A, sha256 d085f7eb5ccf15a0…

53: PHASE FE3Y %A 2 3 1 !
54: CONST FE3Y : FE : Y : !

FeY-23Ye.tdb: FE3Y, type code %A, sha256 88f70e0778e85ffb…

60: PHASE FE3Y %A 2 3 1 !
61: CONST FE3Y : FE : Y : !

FeY-97Du.tdb: FE3Y, type code %A, sha256 6ffcbf8e63537db7…

62: PHASE FE3Y %A 2 3 1 !
63: CONST FE3Y : FE : Y : !

Example references (10 of 11; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1016/0364-5916(84)90033-6 P.R. Subramanian, J.F. Smith, Thermodynamics of Formation of Y-Fe Alloys. Calphad 8(4), 295–305 (1984)
cited as the source of values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1103/physrevb.70.144107 M. Mihalkovič, M. Widom, Ab initiocalculations of cohesive energies of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow></mml:math>-based glass-forming alloys, Phys. Rev. B 70 (2004).
cited as the source of values for this phase
doi:10.1016/0022-5088(76)90180-6 A.R. Miedema, On the heat of formation of solid alloys. II, Journal of the Less Common Metals 46, 67-83 (1976).
cited as the source of values for this phase
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase
doi:10.1038/npjcompumats.2015.10 Scott Kirklin, James E Saal, Bryce Meredig, Alex Thompson, Jeff W Doak, Muratahan Aykol et al., The Open Quantum Materials Database (OQMD): assessing the accuracy of DFT formation energies, npj Comput Mater 1 (2015).
cited as the source of values for this phase

HCP_A3 (Fe–Y)

Id: phase:fe-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): 300–1786.15 K, x(Y) 0.98584–1
Literature: 29 values (29 accepted) from 3 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:fe-y:hcp-a3
paper: paper:10.1007/s11669-017-0574-3:α Y, paper:10.1007/s11669-021-00887-9:αY, paper:10.1016/j.jallcom.2013.07.010:α Y, paper:10.1016/j.jallcom.2013.07.010:αY
tdb: tdb:FeY-14Kar.tdb:HCP_A3, tdb:FeY-17Sae.tdb:HCP_A3, tdb:FeY-21Fan.tdb:HCP_A3, tdb:FeY-23Ye.tdb:HCP_A3, tdb:FeY-97Du.tdb:HCP_A3

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

FeY-14Kar.tdb: HCP_A3, type code %, sha256 0e4a9e2361dc9c98…

50: PHASE HCP_A3 % 2 1 0.5 !
51: CONST HCP_A3 : FE Y% : VA : !

FeY-17Sae.tdb: HCP_A3, type code %, sha256 d5fb4919023990bf…

38: PHASE HCP_A3 % 2 1 0.5 !
39: CONST HCP_A3 : FE Y% : VA : !

FeY-21Fan.tdb: HCP_A3, type code %, sha256 d085f7eb5ccf15a0…

37: PHASE HCP_A3 % 2 1 0.5 !
38: CONST HCP_A3 : FE Y% : VA : !

FeY-23Ye.tdb: HCP_A3, type code %, sha256 88f70e0778e85ffb…

44: PHASE HCP_A3 % 2 1 0.5 !
45: CONST HCP_A3 : FE Y% : VA : !

FeY-97Du.tdb: HCP_A3, type code %, sha256 6ffcbf8e63537db7…

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

Example references (5 of 5; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1016/0364-5916(91)90030-n A.T. Dinsdale, SGTE data for pure elements, Calphad 15, 317-425 (1991).
cited as the source of values for this phase

LIQUID (Fe–Y)

Id: phase:fe-y:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1119.28–2500 K, x(Y) 0–1
Literature: 207 values (204 accepted) from 4 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:fe-y:liquid
paper: paper:10.1007/s11669-017-0574-3:Liq, paper:10.1007/s11669-017-0574-3:liquid, paper:10.1007/s11669-021-00887-9:L, paper:10.1007/s11669-021-00887-9:Liquid, paper:10.1016/j.jallcom.2013.07.010:L, paper:10.1016/j.jallcom.2013.07.010:Liq, paper:10.1016/j.jallcom.2013.07.010:liquid, paper:10.20517/jmi.2023.08:L
tdb: tdb:FeY-14Kar.tdb:LIQUID, tdb:FeY-17Sae.tdb:LIQUID, tdb:FeY-21Fan.tdb:LIQUID, tdb:FeY-23Ye.tdb:LIQUID, tdb:FeY-97Du.tdb:LIQUID

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

FeY-14Kar.tdb: LIQUID, type code %, sha256 0e4a9e2361dc9c98…

35: PHASE LIQUID:L % 1 1 !
36: CONST LIQUID:L : FE Y : !

FeY-17Sae.tdb: LIQUID, type code %, sha256 d5fb4919023990bf…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : FE Y : !

FeY-21Fan.tdb: LIQUID, type code %, sha256 d085f7eb5ccf15a0…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : FE Y : !

FeY-23Ye.tdb: LIQUID, type code %, sha256 88f70e0778e85ffb…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : FE Y : !

FeY-97Du.tdb: LIQUID, type code %, sha256 6ffcbf8e63537db7…

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

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2013.07.010 S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the iron–yttrium system, Journal of Alloys and Compounds 583, 598-606 (2014).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-017-0574-3 I. Saenko, O. Fabrichnaya, A. Udovsky, New Thermodynamic Assessment of the Fe-Y System, J. Phase Equilib. Diffus. 38, 684-699 (2017).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11669-021-00887-9 Ling Fan, Chen Shen, Kun Hu, Huashan Liu, Hongbin Zhang, DFT Calculations and Thermodynamic Re-Assessment of the Fe-Y Binary System, J. Phase Equilib. Diffus. 42, 348-362 (2021).
assessment that models this phase; reports values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports values for this phase
doi:10.1007/s11669-017-0546-7 B. Konar, J. Kim, I.-H. Jung, Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE system: RE= Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y. J. Phase Equilib. Diff. 38(4), 509–542 (2017)
cited as the source of values for this phase
doi:10.1016/0364-5916(91)90030-n A.T. Dinsdale, SGTE data for pure elements, Calphad 15, 317-425 (1991).
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}
}