Fe–Si phases

12 phases (tier A 5, tier C 3, 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–Si system page · Markdown · field reference

Phases of the Fe–Si system (12)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:fe-si:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2499.97 K, x(Si) 1–1	4	5
MSI_B20 phase:fe-si:b20-msi	FeSi · B20 · cP8 · P2_13 (198)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1683.86 K, x(Si) 0.48824–0.5122	12	5
BCC_4SL phase:fe-si:bcc-4sl		needs_review	no calculated diagram	0	2
BCC_A2 phase:fe-si:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1800 K, x(Si) 0–0.19	4	10
B2_BCC phase:fe-si:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1823.25 K, x(Si) 0–0.31807	6	5
M5SI3_D88 phase:fe-si:d88-m5si3	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 1070–1364.45 K, x(Si) 0.375–0.375	3	5
FCC_A1 phase:fe-si:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 1179.97–1696.48 K, x(Si) 0–0.03391	0	5
FE2SI phase:fe-si:fe2si	AlNi2 · hP6 · P-3m1 (164)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 1315.83–1487.53 K, x(Si) 0.33333–0.3392	11	5
FESI2_H phase:fe-si:fesi2-h		needs_review	stable in 3 of 3 calculated diagram(s): 1209.55–1487 K, x(Si) 0.69809–0.71468	11	5
FESI2_L phase:fe-si:fesi2-l		needs_review	stable in 3 of 3 calculated diagram(s): 300–1275.67 K, x(Si) 0.66667–0.66667	2	5
HCP_A3 phase:fe-si:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	5
LIQUID phase:fe-si:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 1470.59–2500 K, x(Si) 0–1	21	5

DIAMOND_A4 (Fe–Si)

Id: phase:fe-si:a4-diamond; status assigned
Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type st:a4-c-diamond-cf8; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–2499.97 K, x(Si) 1–1
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-si:a4-diamond, corpus:phase:fe-si:diamond-a4
paper: paper:10.1016/j.calphad.2013.07.007:(Si), paper:sha256-85fd53a1a176b694:(Si)
tdb: tdb:FeSi-12Ohn.tdb:DIAMOND_A4, tdb:FeSi-14Yua.tdb:DIAMOND_A4, tdb:FeSi-17Cui.tdb:DIAMOND_A4, tdb:FeSi-23Wit.tdb:DIAMOND_A4, tdb:FeSi-91Lac-LB.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: DIAMOND_A4, type code %, sha256 e67d734746ab4b1c…

62: PHASE DIAMOND_A4 % 1 1 !
63: CONST DIAMOND_A4 : SI : !

FeSi-14Yua.tdb: DIAMOND_A4, type code %, sha256 b45ac7c1e94df438…

55: PHASE DIAMOND_A4 % 1 1 !
56: CONST DIAMOND_A4 : SI : !

FeSi-17Cui.tdb: DIAMOND_A4, type code %, sha256 93d3ce80d5ece2c2…

64: PHASE DIAMOND_A4 % 1 1 !
65: CONST DIAMOND_A4 : FE SI% : !

FeSi-23Wit.tdb: DIAMOND_A4, type code %, sha256 1860578382796878…

62: PHASE DIAMOND_A4 % 1 1 !
63: CONST DIAMOND_A4 : FE SI% : !

FeSi-91Lac-LB.tdb: DIAMOND_A4, type code %, sha256 b0825ae47e316513…

59: PHASE DIAMOND_A4 % 1 1 !
60: CONST DIAMOND_A4 : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

MSI_B20 (Fe–Si)

Id: phase:fe-si:b20-msi; status assigned
Structure: FeSi · B20 · cP8 · P2_13 (198); type st:b20-fesi-cp8; 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 (unrecognised_name_tokens:MSI); structure as stated in the SGTE crystallographic table for this phase name and system
Caveat: partitioned order/disorder model in FeSi-23Wit.tdb also describes the disordered state
Stability: stable in 3 of 3 calculated diagram(s): 300–1683.86 K, x(Si) 0.48824–0.5122
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-si:b20-msi, corpus:phase:fe-si:msi-b20
paper: paper:10.1016/j.calphad.2013.07.007:FeSi, paper:sha256-85fd53a1a176b694:FeSi
tdb: tdb:FeSi-12Ohn.tdb:MSI_B20, tdb:FeSi-14Yua.tdb:MSI_B20, tdb:FeSi-17Cui.tdb:MSI_B20, tdb:FeSi-23Wit.tdb:MSI_B20, tdb:FeSi-91Lac-LB.tdb:MSI_B20

TDB models of MSI_B20 (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: MSI_B20, type code %, sha256 e67d734746ab4b1c…

77: PHASE MSI_B20 % 2 1 1 !
78: CONST MSI_B20 : FE : SI : !

FeSi-14Yua.tdb: MSI_B20, type code %, sha256 b45ac7c1e94df438…

70: PHASE MSI_B20 % 2 1 1 !
71: CONST MSI_B20 : FE : SI : !

FeSi-17Cui.tdb: MSI_B20, type code %, sha256 93d3ce80d5ece2c2…

79: PHASE MSI_B20 % 2 1 1 !
80: CONST MSI_B20 : FE : SI : !

FeSi-23Wit.tdb: MSI_B20, type code %, sha256 1860578382796878…

77: PHASE MSI_B20 % 2 1 1 !
78: CONST MSI_B20 : FE% SI : FE SI% : !

FeSi-91Lac-LB.tdb: MSI_B20, type code %, sha256 b0825ae47e316513…

79: PHASE MSI_B20 % 2 1 1 !
80: CONST MSI_B20 : FE : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

BCC_4SL (Fe–Si)

Id: phase:fe-si:bcc-4sl; status needs_review
No structure assigned. Why: order_disorder_ambiguity:FeSi-12Ohn.tdb_model_is_partitioned; order_disorder_ambiguity:FeSi-17Cui.tdb_model_is_partitioned; unrecognised_name_tokens:4SL
Candidate (name_token): W · A2 · cI2 · Im-3m (229) — Strukturbericht/word 'A2' in the TDB name
Candidate (tdb_comment): CsCl · B2 · cP2, Pm-3m — FeSi-12Ohn.tdb: 'Prototype CsCl (B2, cP2, Pm-3m), NaTl (B32, cF16, Fd-3m),'
Candidate (tdb_comment): CsCl · B2 · cP2, Pm-3m — FeSi-17Cui.tdb: 'Prototype CsCl (B2, cP2, Pm-3m), NaTl (B32, cF16, Fd-3m),'
Stability: no calculated diagram
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:fe-si:bcc-4sl
tdb: tdb:FeSi-12Ohn.tdb:BCC_4SL, tdb:FeSi-17Cui.tdb:BCC_4SL

TDB models of BCC_4SL (2): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: BCC_4SL, type code %BZ, sha256 e67d734746ab4b1c…

52: PHASE BCC_4SL %BZ 5 0.25 0.25 0.25 0.25 1 !
53: CONST BCC_4SL : FE SI : FE SI : FE SI : FE SI : VA : !

FeSi-17Cui.tdb: BCC_4SL, type code %BZ, sha256 93d3ce80d5ece2c2…

54: PHASE BCC_4SL %BZ 5 0.25 0.25 0.25 0.25 1 !
55: CONST BCC_4SL : FE SI : FE SI : FE SI : FE SI : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

BCC_A2 (Fe–Si)

Id: phase:fe-si: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 3 of 3 calculated diagram(s): 300–1800 K, x(Si) 0–0.19
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (13): corpus: corpus:phase:fe-si:bcc-a2
paper: paper:10.1016/j.calphad.2013.07.007:BCC_B2, paper:10.2355/isijinternational.52.540:A2 (B2)
tdb: tdb:FeSi-12Ohn.tdb:A2_BCC, tdb:FeSi-12Ohn.tdb:BCC_A2, tdb:FeSi-14Yua.tdb:A2_BCC, tdb:FeSi-14Yua.tdb:BCC_A2, tdb:FeSi-17Cui.tdb:A2_BCC, tdb:FeSi-17Cui.tdb:BCC_A2, tdb:FeSi-23Wit.tdb:A2_BCC, tdb:FeSi-23Wit.tdb:BCC_A2, tdb:FeSi-91Lac-LB.tdb:A2_BCC, tdb:FeSi-91Lac-LB.tdb:BCC_A2

TDB models of BCC_A2 (10): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: A2_BCC, type code %B, sha256 e67d734746ab4b1c…

41: PHASE A2_BCC %B 2 1 3 !
42: CONST A2_BCC : FE SI : VA : !

FeSi-12Ohn.tdb: BCC_A2, type code %B, sha256 e67d734746ab4b1c…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : FE SI : VA : !

FeSi-14Yua.tdb: A2_BCC, type code %B, sha256 b45ac7c1e94df438…

40: PHASE A2_BCC %B 2 1 3 !
41: CONST A2_BCC : FE SI : VA : !

FeSi-14Yua.tdb: BCC_A2, type code %B, sha256 b45ac7c1e94df438…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : FE SI : VA : !

FeSi-17Cui.tdb: A2_BCC, type code %B, sha256 93d3ce80d5ece2c2…

43: PHASE A2_BCC %B 2 1 3 !
44: CONST A2_BCC : FE SI : VA : !

FeSi-17Cui.tdb: BCC_A2, type code %B, sha256 93d3ce80d5ece2c2…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : FE SI : VA : !

FeSi-23Wit.tdb: A2_BCC, type code %B, sha256 1860578382796878…

47: PHASE A2_BCC %B 2 1 3 !
48: CONST A2_BCC : FE SI : VA : !

FeSi-23Wit.tdb: BCC_A2, type code %B, sha256 1860578382796878…

42: PHASE BCC_A2 %B 2 1 3 !
43: CONST BCC_A2 : FE SI : VA : !

FeSi-91Lac-LB.tdb: A2_BCC, type code %B, sha256 b0825ae47e316513…

44: PHASE A2_BCC %B 2 1 3 !
45: CONST A2_BCC : FE SI : VA : !

FeSi-91Lac-LB.tdb: BCC_A2, type code %B, sha256 b0825ae47e316513…

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

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase

B2_BCC (Fe–Si)

Id: phase:fe-si:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: FeSi-12Ohn.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: FeSi-14Yua.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: FeSi-17Cui.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: FeSi-23Wit.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: FeSi-91Lac-LB.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in FeSi-12Ohn.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeSi-14Yua.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeSi-17Cui.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeSi-23Wit.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeSi-91Lac-LB.tdb also describes the disordered state
Stability: stable in 3 of 3 calculated diagram(s): 300–1823.25 K, x(Si) 0–0.31807
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:fe-si:bcc-b2
paper: paper:10.2355/isijinternational.52.540:B2, paper:sha256-85fd53a1a176b694:bcc-B2
tdb: tdb:FeSi-12Ohn.tdb:B2_BCC, tdb:FeSi-14Yua.tdb:B2_BCC, tdb:FeSi-17Cui.tdb:B2_BCC, tdb:FeSi-23Wit.tdb:B2_BCC, tdb:FeSi-91Lac-LB.tdb:B2_BCC

TDB models of B2_BCC (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: B2_BCC, type code %BO, sha256 e67d734746ab4b1c…

46: PHASE B2_BCC %BO 3 0.5 0.5 3 !
47: CONST B2_BCC : FE% SI : FE SI% : VA : !

FeSi-14Yua.tdb: B2_BCC, type code %BO, sha256 b45ac7c1e94df438…

45: PHASE B2_BCC %BO 3 0.5 0.5 3 !
46: CONST B2_BCC : FE% SI : FE SI% : VA : !

FeSi-17Cui.tdb: B2_BCC, type code %BO, sha256 93d3ce80d5ece2c2…

48: PHASE B2_BCC %BO 3 0.5 0.5 3 !
49: CONST B2_BCC : FE% SI : FE SI% : VA : !

FeSi-23Wit.tdb: B2_BCC, type code %BO, sha256 1860578382796878…

52: PHASE B2_BCC %BO 3 0.5 0.5 3 !
53: CONST B2_BCC : FE% SI : FE SI% : VA : !

FeSi-91Lac-LB.tdb: B2_BCC, type code %BO, sha256 b0825ae47e316513…

49: PHASE B2_BCC %BO 3 0.5 0.5 3 !
50: CONST B2_BCC : FE% SI : FE SI% : VA : !

Example references (5 of 5; assessments first):

doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase

M5SI3_D88 (Fe–Si)

Id: phase:fe-si:d88-m5si3; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; 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 (unrecognised_name_tokens:M5SI3); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Fe 0.6250, Si 0.3750
Stability: stable in 3 of 3 calculated diagram(s): 1070–1364.45 K, x(Si) 0.375–0.375
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:fe-si:d88-m5si3
paper: paper:sha256-85fd53a1a176b694:Fe5Si3
tdb: tdb:FeSi-12Ohn.tdb:M5SI3_D88, tdb:FeSi-14Yua.tdb:M5SI3_D88, tdb:FeSi-17Cui.tdb:M5SI3_D88, tdb:FeSi-23Wit.tdb:M5SI3_D88, tdb:FeSi-91Lac-LB.tdb:M5SI3_D88

TDB models of M5SI3_D88 (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: M5SI3_D88, type code %, sha256 e67d734746ab4b1c…

72: PHASE M5SI3_D88 % 2 5 3 !
73: CONST M5SI3_D88 : FE : SI : !

FeSi-14Yua.tdb: M5SI3_D88, type code %, sha256 b45ac7c1e94df438…

65: PHASE M5SI3_D88 % 2 5 3 !
66: CONST M5SI3_D88 : FE : SI : !

FeSi-17Cui.tdb: M5SI3_D88, type code %A, sha256 93d3ce80d5ece2c2…

74: PHASE M5SI3_D88 %A 2 5 3 !
75: CONST M5SI3_D88 : FE : SI : !

FeSi-23Wit.tdb: M5SI3_D88, type code %A, sha256 1860578382796878…

72: PHASE M5SI3_D88 %A 2 5 3 !
73: CONST M5SI3_D88 : FE : SI : !

FeSi-91Lac-LB.tdb: M5SI3_D88, type code %, sha256 b0825ae47e316513…

84: PHASE M5SI3_D88 % 2 5 3 !
85: CONST M5SI3_D88 : FE : SI : !

Example references (5 of 5; assessments first):

doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

FCC_A1 (Fe–Si)

Id: phase:fe-si: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 3 of 3 calculated diagram(s): 1179.97–1696.48 K, x(Si) 0–0.03391
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:fe-si:fcc-a1
tdb: tdb:FeSi-12Ohn.tdb:FCC_A1, tdb:FeSi-14Yua.tdb:FCC_A1, tdb:FeSi-17Cui.tdb:FCC_A1, tdb:FeSi-23Wit.tdb:FCC_A1, tdb:FeSi-91Lac-LB.tdb:FCC_A1

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

FeSi-12Ohn.tdb: FCC_A1, type code %A, sha256 e67d734746ab4b1c…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : FE SI : VA : !

FeSi-14Yua.tdb: FCC_A1, type code %A, sha256 b45ac7c1e94df438…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : FE SI : VA : !

FeSi-17Cui.tdb: FCC_A1, type code %A, sha256 93d3ce80d5ece2c2…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : FE SI : VA : !

FeSi-23Wit.tdb: FCC_A1, type code %A, sha256 1860578382796878…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : FE SI : VA : !

FeSi-91Lac-LB.tdb: FCC_A1, type code %A, sha256 b0825ae47e316513…

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

Example references (5 of 5; assessments first):

doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

FE2SI (Fe–Si)

Id: phase:fe-si:fe2si; status assigned
Structure: AlNi2 · hP6 · P-3m1 (164); type st:alni2-hp6; 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 3 of 3 calculated diagram(s): 1315.83–1487.53 K, x(Si) 0.33333–0.3392
Literature: 11 values (11 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:fe-si:fe2si
paper: paper:10.1016/j.calphad.2013.07.007:Fe2Si, paper:sha256-85fd53a1a176b694:Fe2Si
tdb: tdb:FeSi-12Ohn.tdb:FE2SI, tdb:FeSi-14Yua.tdb:FE2SI, tdb:FeSi-17Cui.tdb:FE2SI, tdb:FeSi-23Wit.tdb:FE2SI, tdb:FeSi-91Lac-LB.tdb:FE2SI

TDB models of FE2SI (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: FE2SI, type code %, sha256 e67d734746ab4b1c…

67: PHASE FE2SI % 2 2 1 !
68: CONST FE2SI : FE : SI : !

FeSi-14Yua.tdb: FE2SI, type code %, sha256 b45ac7c1e94df438…

60: PHASE FE2SI % 2 0.666667 0.333333 !
61: CONST FE2SI : FE : SI : !

FeSi-17Cui.tdb: FE2SI, type code %, sha256 93d3ce80d5ece2c2…

69: PHASE FE2SI % 2 2 1 !
70: CONST FE2SI : FE : SI : !

FeSi-23Wit.tdb: FE2SI, type code %, sha256 1860578382796878…

67: PHASE FE2SI % 3 1 1 1 !
68: CONST FE2SI : FE : FE VA : SI VA : !

FeSi-91Lac-LB.tdb: FE2SI, type code %, sha256 b0825ae47e316513…

64: PHASE FE2SI % 2 2 1 !
65: CONST FE2SI : FE : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

FESI2_H (Fe–Si)

Id: phase:fe-si:fesi2-h; status needs_review
No structure assigned. Why: name_has_descriptive_tokens:H; no_structure_token
Candidate (sgte_mmc2): FeSi2-h · oC48 · Cmce (64) — Hallstedt 2025 mmc2 row for FESI2_H: FeSi2-h
Candidate (tdb_comment): FeSi2-h · oC48 · Cmca — FeSi-12Ohn.tdb: 'Prototype FeSi2-h (oC48, Cmca)'
Candidate (tdb_comment): FeSi2-h · oC48 · Cmca — FeSi-14Yua.tdb: 'Prototype FeSi2-h (oC48, Cmca)'
Candidate (tdb_comment): FeSi2-h · oC48 · Cmca — FeSi-17Cui.tdb: 'Prototype FeSi2-h (oC48, Cmca)'
Candidate (tdb_comment): FeSi2-h · oC48 · Cmca — FeSi-23Wit.tdb: 'Prototype FeSi2-h (oC48, Cmca)'
Candidate (tdb_comment): FeSi2-h · oC48 · Cmca — FeSi-91Lac-LB.tdb: 'Prototype FeSi2-h (oC48, Cmca)'
Stability: stable in 3 of 3 calculated diagram(s): 1209.55–1487 K, x(Si) 0.69809–0.71468
Literature: 11 values (11 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:fe-si:fesi2-h
paper: paper:10.1016/j.calphad.2013.07.007:FeSi2_H, paper:sha256-85fd53a1a176b694:FeSi2-H
tdb: tdb:FeSi-12Ohn.tdb:FESI2_H, tdb:FeSi-14Yua.tdb:FESI2_H, tdb:FeSi-17Cui.tdb:FESI2_H, tdb:FeSi-23Wit.tdb:FESI2_H, tdb:FeSi-91Lac-LB.tdb:FESI2_H

TDB models of FESI2_H (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: FESI2_H, type code %, sha256 e67d734746ab4b1c…

87: PHASE FESI2_H % 2 0.3 0.7 !
88: CONST FESI2_H : FE : SI : !

FeSi-14Yua.tdb: FESI2_H, type code %, sha256 b45ac7c1e94df438…

75: PHASE FESI2_H % 2 0.3 0.7 !
76: CONST FESI2_H : FE : SI : !

FeSi-17Cui.tdb: FESI2_H, type code %, sha256 93d3ce80d5ece2c2…

89: PHASE FESI2_H % 2 3 7 !
90: CONST FESI2_H : FE : SI : !

FeSi-23Wit.tdb: FESI2_H, type code %, sha256 1860578382796878…

87: PHASE FESI2_H % 2 3 7 !
88: CONST FESI2_H : FE% SI : FE SI% : !

FeSi-91Lac-LB.tdb: FESI2_H, type code %, sha256 b0825ae47e316513…

69: PHASE FESI2_H % 2 0.3 0.7 !
70: CONST FESI2_H : FE : SI : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

FESI2_L (Fe–Si)

Id: phase:fe-si:fesi2-l; status needs_review
No structure assigned. Why: name_has_descriptive_tokens:L; no_structure_token
Candidate (dft_mp): Cmce (64) — on-hull MP FeSi2 at x(SI)=0.6667
Candidate (dft_oqmd): Cmca (64) — on-hull OQMD Fe1 Si2 at x(SI)=0.6667
Candidate (sgte_mmc2): FeSi2-l · tP3 · P4/mmm (123) — Hallstedt 2025 mmc2 row for FESI2_L: FeSi2-l
Candidate (tdb_comment): FeSi2-l · tP3 · P4/mmm — FeSi-12Ohn.tdb: 'Prototype FeSi2-l (tP3, P4/mmm)'
Candidate (tdb_comment): FeSi2-l · tP3 · P4/mmm — FeSi-14Yua.tdb: 'Prototype FeSi2-l (tP3, P4/mmm)'
Candidate (tdb_comment): FeSi2-l · tP3 · P4/mmm — FeSi-17Cui.tdb: 'Prototype FeSi2-l (tP3, P4/mmm)'
Candidate (tdb_comment): FeSi2-l · tP3 · P4/mmm — FeSi-23Wit.tdb: 'Prototype FeSi2-l (tP3, P4/mmm)'
Candidate (tdb_comment): FeSi2-l · tP3 · P4/mmm — FeSi-91Lac-LB.tdb: 'Prototype FeSi2-l (tP3, P4/mmm)'
Stoichiometry: Fe 0.3333, Si 0.6667
Stability: stable in 3 of 3 calculated diagram(s): 300–1275.67 K, x(Si) 0.66667–0.66667
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:fe-si:fesi2-l
paper: paper:sha256-85fd53a1a176b694:FeSi2-L
tdb: tdb:FeSi-12Ohn.tdb:FESI2_L, tdb:FeSi-14Yua.tdb:FESI2_L, tdb:FeSi-17Cui.tdb:FESI2_L, tdb:FeSi-23Wit.tdb:FESI2_L, tdb:FeSi-91Lac-LB.tdb:FESI2_L

TDB models of FESI2_L (5): PHASE and CONSTITUENT statements as written

FeSi-12Ohn.tdb: FESI2_L, type code %, sha256 e67d734746ab4b1c…

82: PHASE FESI2_L % 2 1 2 !
83: CONST FESI2_L : FE : SI : !

FeSi-14Yua.tdb: FESI2_L, type code %, sha256 b45ac7c1e94df438…

80: PHASE FESI2_L % 2 0.333333 0.666667 !
81: CONST FESI2_L : FE : SI : !

FeSi-17Cui.tdb: FESI2_L, type code %, sha256 93d3ce80d5ece2c2…

84: PHASE FESI2_L % 2 1 2 !
85: CONST FESI2_L : FE : SI : !

FeSi-23Wit.tdb: FESI2_L, type code %, sha256 1860578382796878…

82: PHASE FESI2_L % 2 1 2 !
83: CONST FESI2_L : FE : SI : !

FeSi-91Lac-LB.tdb: FESI2_L, type code %, sha256 b0825ae47e316513…

74: PHASE FESI2_L % 2 1 2 !
75: CONST FESI2_L : FE : SI : !

Example references (5 of 5; assessments first):

doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

HCP_A3 (Fe–Si)

Id: phase:fe-si: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: not stable in 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:fe-si:hcp-a3
tdb: tdb:FeSi-12Ohn.tdb:HCP_A3, tdb:FeSi-14Yua.tdb:HCP_A3, tdb:FeSi-17Cui.tdb:HCP_A3, tdb:FeSi-23Wit.tdb:HCP_A3, tdb:FeSi-91Lac-LB.tdb:HCP_A3

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

FeSi-12Ohn.tdb: HCP_A3, type code %, sha256 e67d734746ab4b1c…

57: PHASE HCP_A3 % 2 1 0.5 !
58: CONST HCP_A3 : FE SI : VA : !

FeSi-14Yua.tdb: HCP_A3, type code %, sha256 b45ac7c1e94df438…

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

FeSi-17Cui.tdb: HCP_A3, type code %, sha256 93d3ce80d5ece2c2…

59: PHASE HCP_A3 % 2 1 0.5 !
60: CONST HCP_A3 : FE SI : VA : !

FeSi-23Wit.tdb: HCP_A3, type code %, sha256 1860578382796878…

57: PHASE HCP_A3 % 2 1 0.5 !
58: CONST HCP_A3 : FE SI : VA : !

FeSi-91Lac-LB.tdb: HCP_A3, type code %, sha256 b0825ae47e316513…

54: PHASE HCP_A3 % 2 1 0.5 !
55: CONST HCP_A3 : FE SI : VA : !

Example references (5 of 5; assessments first):

doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
assessment that models this phase

LIQUID (Fe–Si)

Id: phase:fe-si:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 1470.59–2500 K, x(Si) 0–1
Literature: 21 values (21 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:fe-si:liquid
paper: paper:10.1016/j.calphad.2013.07.007:L, paper:sha256-85fd53a1a176b694:Liquid
tdb: tdb:FeSi-12Ohn.tdb:LIQUID, tdb:FeSi-14Yua.tdb:LIQUID, tdb:FeSi-17Cui.tdb:LIQUID, tdb:FeSi-23Wit.tdb:LIQUID, tdb:FeSi-91Lac-LB.tdb:LIQUID

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

FeSi-12Ohn.tdb: LIQUID, type code %, sha256 e67d734746ab4b1c…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : FE SI : !

FeSi-14Yua.tdb: LIQUID, type code %, sha256 b45ac7c1e94df438…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : FE SI : !

FeSi-17Cui.tdb: LIQUID, type code %, sha256 93d3ce80d5ece2c2…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : FE SI : !

FeSi-23Wit.tdb: LIQUID, type code %, sha256 1860578382796878…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : FE SI : !

FeSi-91Lac-LB.tdb: LIQUID, type code %, sha256 b0825ae47e316513…

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

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2013.07.007 Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).
assessment that models this phase; reports values for this phase
doi:10.1007/BF02664987 J. Lacaze, B. Sundman, Metall. Mater. Trans. A, 22A, 2211-23(1991). Liquid modified by J. Miettinen 1998.
assessment that models this phase
doi:10.1016/j.calphad.2016.11.003 S. Cui, I.-H. Jung, Calphad, 56, 108-25(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2022.168118 V.T. Witusiewicz, O. Stryzhyboroda, S. Vinke, K. Bobzin, U. Hecht, Experimental study and thermodynamic modelling of the ternary system Fe–Ni–Si with re-modelling of the constituent binary systems, Journal of Alloys and Compounds 935, 168118 (2023).
assessment that models this phase
doi:10.2355/isijinternational.52.540 Ikuo Ohnuma, Shinya Abe, Shota Shimenouchi, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida, Experimental and Thermodynamic Studies of the Fe–Si Binary System, ISIJ Int. 52, 540-548 (2012).
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}
}