B–Fe phases

11 phases (tier A 5, tier C 4, liquid 1, needs_review 1); 7 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 · B–Fe system page · Markdown · field reference

Phases of the B–Fe system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BETA_RHOMBO_B phase:b-fe:b-beta-rhombo		needs_review	stable in 7 of 7 calculated diagram(s): 300–3999.42 K, x(B) 0.9382–1	29	7
MB_B27 phase:b-fe:b27-mb	FeB · B27 · oP8 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 7 of 7 calculated diagram(s): 300–1935.8 K, x(B) 0.48749–0.50573	54	7
MB_B33 phase:b-fe:b33-mb	CrB · B33 · oC8 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1485.05 K, x(B) 0.49124–0.50254	28	1
BCC_A2 phase:b-fe:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–3999.7 K, x(B) 0–0.00235	45	7
M2B_C16 phase:b-fe:c16-m2b	Al2Cu · C16 · tI12 · I4/mcm (140)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 7 of 7 calculated diagram(s): 300–1683.9 K, x(B) 0.33333–0.33333	73	7
CEMENTITE_D011 phase:b-fe:cementite-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	not stable in 1 calculated diagram(s)	3	1
FCC_A1 phase:b-fe:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 301.08–1802.45 K, x(B) 0–0.00114	54	7
FE3B_HT phase:b-fe:fe3b	Ti3P · tP32 · P4_2/n (86)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	not stable in 1 calculated diagram(s)	15	1
FE3B_D0E phase:b-fe:fe3b-d0e	Ni3P · D0_e · tI32 · I-4 (82)	tier A: standard phase name	not stable in 1 calculated diagram(s)	12	1
HCP_A3 phase:b-fe:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 7 calculated diagram(s)	0	7
LIQUID phase:b-fe:liquid	liquid	liquid	stable in 7 of 7 calculated diagram(s): 1430.82–4000 K, x(B) 0–1	124	7

BETA_RHOMBO_B (B–Fe)

Id: phase:b-fe:b-beta-rhombo; status needs_review
No structure assigned. Why: name_has_descriptive_tokens:RHOMBO; no_structure_token
Candidate (sgte_mmc2): beta-B · hR105 · R-3m (166) — Hallstedt 2025 mmc2 row for BETA_RHOMBO_B: beta-B
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-01Pal.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-02Rom.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-08Yos.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-19Wit.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-20Tak.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-91Pan.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — FeB-94Hal-LB.tdb: 'Prototype beta-B (hR105, R-3m)'
Stability: stable in 7 of 7 calculated diagram(s): 300–3999.42 K, x(B) 0.9382–1
Literature: 29 values (27 accepted) from 2 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:b-fe:b-beta-rhombo, corpus:phase:b-fe:beta-rhombo-b
paper: paper:10.1016/j.jallcom.2019.05.341:βB, paper:10.1016/s0364-5916(02)00012-3:β
tdb: tdb:FeB-01Pal.tdb:BETA_RHOMBO_B, tdb:FeB-02Rom.tdb:BETA_RHOMBO_B, tdb:FeB-08Yos.tdb:BETA_RHOMBO_B, tdb:FeB-19Wit.tdb:BETA_RHOMBO_B, tdb:FeB-20Tak.tdb:BETA_RHOMBO_B, tdb:FeB-91Pan.tdb:BETA_RHOMBO_B, tdb:FeB-94Hal-LB.tdb:BETA_RHOMBO_B

TDB models of BETA_RHOMBO_B (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: BETA_RHOMBO_B, type code %, sha256 d868b8575842d60b…

46: PHASE BETA_RHOMBO_B % 1 1 !
47: CONST BETA_RHOMBO_B : B : !

FeB-02Rom.tdb: BETA_RHOMBO_B, type code %, sha256 76003da4f9d7a948…

62: PHASE BETA_RHOMBO_B % 1 1 !
63: CONST BETA_RHOMBO_B : B : !

FeB-08Yos.tdb: BETA_RHOMBO_B, type code %, sha256 bca7bc67b25d3e8b…

44: PHASE BETA_RHOMBO_B % 1 1 !
45: CONST BETA_RHOMBO_B : B : !

FeB-19Wit.tdb: BETA_RHOMBO_B, type code %, sha256 a20e39e4c8231b9e…

50: PHASE BETA_RHOMBO_B % 1 1 !
51: CONST BETA_RHOMBO_B : FE B% : !

FeB-20Tak.tdb: BETA_RHOMBO_B, type code %, sha256 17fba6129d08f63e…

49: PHASE BETA_RHOMBO_B % 2 101 4 !
50: CONST BETA_RHOMBO_B : FE B% : B : !

FeB-91Pan.tdb: BETA_RHOMBO_B, type code %, sha256 9f52784aa22c8ff3…

45: PHASE BETA_RHOMBO_B % 1 1 !
46: CONST BETA_RHOMBO_B : B : !

FeB-94Hal-LB.tdb: BETA_RHOMBO_B, type code %, sha256 724a628400ef810c…

45: PHASE BETA_RHOMBO_B % 1 1 !
46: CONST BETA_RHOMBO_B : B : !

Example references (10 of 16; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1002/cphc.201001072 Steffi Rades, Andreas Kornowski, Horst Weller, Barbara Albert, Wet‐Chemical Synthesis of Nanoscale Iron Boride, XAFS Analysis and Crystallisation to α‐FeB, ChemPhysChem 12, 1756-1760 (2011).
cited as the source of values for this phase
doi:10.1002/pssa.2211230217 V. A. Barinov, G. A. Dorofeev, L. V. Ovechkin, E. P. Elsukov, A. E. Ermakov, Structure and magnetic properties of the α-FeB phase obtained by mechanical working, Phys. Stat. Sol. (a) 123, 527-534 (1991).
cited as the source of values for this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1007/bf00775428 K. I. Portnoi, M. Kh. Levinskaya, V. M. Romashov, Constitution diagram of the system iron-boron, Powder Metall Met Ceram 8, 657-659 (1969).
cited as the source of values for this phase
doi:10.1016/0375-9601(69)90927-x J.B. Jeffries, N. Hershkowitz, Temperature dependence of the hyperfine interactions of FeB, Physics Letters A 30, 187-188 (1969).
cited as the source of values for this phase

MB_B27 (B–Fe)

Id: phase:b-fe:b27-mb; status assigned
Structure: FeB · B27 · oP8 · Pnma (62); type st:b27-feb-op8; 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 (name_has_descriptive_tokens:MB, no_structure_token, structure_token_is_also_a_formula); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 7 of 7 calculated diagram(s): 300–1935.8 K, x(B) 0.48749–0.50573
Literature: 54 values (52 accepted) from 2 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:b-fe:b27-mb, corpus:phase:b-fe:mb-b27
paper: paper:10.1016/j.jallcom.2019.05.341:B27, paper:10.1016/s0364-5916(02)00012-3:FeB
tdb: tdb:FeB-01Pal.tdb:MB_B27, tdb:FeB-02Rom.tdb:MB_B27, tdb:FeB-08Yos.tdb:MB_B27, tdb:FeB-19Wit.tdb:MB_B27, tdb:FeB-20Tak.tdb:MB_B27, tdb:FeB-91Pan.tdb:MB_B27, tdb:FeB-94Hal-LB.tdb:MB_B27

TDB models of MB_B27 (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: MB_B27, type code %, sha256 d868b8575842d60b…

56: PHASE MB_B27 % 2 1 1 !
57: CONST MB_B27 : FE : B : !

FeB-02Rom.tdb: MB_B27, type code %A, sha256 76003da4f9d7a948…

72: PHASE MB_B27 %A 2 1 1 !
73: CONST MB_B27 : FE : B : !

FeB-08Yos.tdb: MB_B27, type code %A, sha256 bca7bc67b25d3e8b…

54: PHASE MB_B27 %A 2 1 1 !
55: CONST MB_B27 : FE : B : !

FeB-19Wit.tdb: MB_B27, type code %A, sha256 a20e39e4c8231b9e…

75: PHASE MB_B27 %A 2 1 1 !
76: CONST MB_B27 : B FE% : B% FE : !

FeB-20Tak.tdb: MB_B27, type code %A, sha256 17fba6129d08f63e…

59: PHASE MB_B27 %A 2 1 1 !
60: CONST MB_B27 : FE : B : !

FeB-91Pan.tdb: MB_B27, type code %A, sha256 9f52784aa22c8ff3…

55: PHASE MB_B27 %A 2 0.5 0.5 !
56: CONST MB_B27 : FE : B : !

FeB-94Hal-LB.tdb: MB_B27, type code %, sha256 724a628400ef810c…

55: PHASE MB_B27 % 2 1 1 !
56: CONST MB_B27 : FE : B : !

Example references (10 of 13; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1007/bf00775428 K. I. Portnoi, M. Kh. Levinskaya, V. M. Romashov, Constitution diagram of the system iron-boron, Powder Metall Met Ceram 8, 657-659 (1969).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2012.08.127 M.-A. Van Ende, I.-H. Jung, Critical thermodynamic evaluation and optimization of the FeeB, FeeNd, BeNd and NdeFeeB systems, J. Alloys Compd. 548 (2013) 133e154.
cited as the source of values for this phase
doi:10.1039/b208548h Alexander Zaitsev, Natal'ya Zaitseva, Alexander Kodentsov, Thermodynamic properties and phase equilibria in the iron–boron system. Transition of the Fe–B melt into the amorphous stateElectronic supplementary information (ESI) available: Fig. S1–S4 and Tables S1 and S2. See http://www.rsc.org/suppdata/jm/b2/b208548h/, J. Mater. Chem. 13, 943-950 (2003).
cited as the source of values for this phase
doi:10.1016/j.calphad.2013.08.001 M.G. Poletti, L. Battezzati, Assessment of the ternary Fe-Si-B phase diagram, Calphad 43 (2013) 40e47. , M. Leonowicz, Thermodynamic assessment of
cited as the source of values for this phase

MB_B33 (B–Fe)

Id: phase:b-fe:b33-mb; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; 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 (name_has_descriptive_tokens:MB, no_structure_token, structure_token_is_also_a_formula); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300–1485.05 K, x(B) 0.49124–0.50254
Literature: 28 values (28 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:b-fe:b33-mb
paper: paper:10.1016/j.jallcom.2019.05.341:B33
tdb: tdb:FeB-19Wit.tdb:MB_B33

TDB models of MB_B33 (1): PHASE and CONSTITUENT statements as written

FeB-19Wit.tdb: MB_B33, type code %A, sha256 a20e39e4c8231b9e…

70: PHASE MB_B33 %A 2 1 1 !
71: CONST MB_B33 : B FE% : B% FE : !

Example references (10 of 12; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1088/0305-4608/5/4/021 L Takacs, M C Cadeville, I Vincze, Mossbauer study of the intermetallic compounds (Fe 1-x Co x ) 2 B and (Fe 1-x Co x )B, J. Phys. F: Met. Phys. 5, 800-811 (1975).
cited as the source of values for this phase
doi:10.1103/physrevb.20.283 C. L. Chien, D. Musser, E. M. Gyorgy, R. C. Sherwood, H. S. Chen, F. E. Luborsky et al., Magnetic properties of amorphous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mn>0</mml:mn><mml:mn>0</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>72</mml:mn><mml:mn/><mml:mo><~</mml:mo><mml:mi>x</mml:mi><mml:mo><~</mml:mo><mml:mn>8</mml:mn><mml:mn>6</mml:mn><mml:mo>)</mml:mo></mml:math>and crystalline<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B, Phys. Rev. B 20, 283-295 (1979).
cited as the source of values for this phase
doi:10.1103/physrevb.7.23 Kenneth A. Murphy, N. Hershkowitz, Temperature-Dependent Hyperfine Interactions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B, Phys. Rev. B 7, 23-31 (1973).
cited as the source of values for this phase
doi:10.1002/cphc.201001072 Steffi Rades, Andreas Kornowski, Horst Weller, Barbara Albert, Wet‐Chemical Synthesis of Nanoscale Iron Boride, XAFS Analysis and Crystallisation to α‐FeB, ChemPhysChem 12, 1756-1760 (2011).
cited as the source of values for this phase
doi:10.1002/pssa.2211230217 V. A. Barinov, G. A. Dorofeev, L. V. Ovechkin, E. P. Elsukov, A. E. Ermakov, Structure and magnetic properties of the α-FeB phase obtained by mechanical working, Phys. Stat. Sol. (a) 123, 527-534 (1991).
cited as the source of values for this phase
doi:10.1016/0022-4596(84)90340-2 D. Fruchart, P. Chaudouet, R. Fruchart, A. Rouault, J.P. Senateur, Etudes structurales de compose´s de type ce´mentite: Effet de l'hydroge`ne sur Fe3C suivi par diffraction neutronique. Spectrome´trie Mo¨ssbauer sur FeCo2B et Co3B dope´s au57Fe, Journal of Solid State Chemistry 51, 246-252 (1984).
cited as the source of values for this phase
doi:10.1016/0304-8853(89)90333-8 R. Coehoorn, D.B. de Mooij, C. de Waard, Meltspun permanent magnet materials containing Fe3B as the main phase, Journal of Magnetism and Magnetic Materials 80, 101-104 (1989).
cited as the source of values for this phase
doi:10.1016/0375-9601(69)90927-x J.B. Jeffries, N. Hershkowitz, Temperature dependence of the hyperfine interactions of FeB, Physics Letters A 30, 187-188 (1969).
cited as the source of values for this phase
doi:10.1063/1.430698 D. B. DeYoung, R. G. Barnes, A Mössbauer effect study of 57Fe in transition metal monoborides, The Journal of Chemical Physics 62, 1726-1738 (1975).
cited as the source of values for this phase

BCC_A2 (B–Fe)

Id: phase:b-fe: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 7 of 7 calculated diagram(s): 300–3999.7 K, x(B) 0–0.00235
Literature: 45 values (45 accepted) from 2 papers
Interactive: phase registry entry

Names (12): corpus: corpus:phase:b-fe:bcc-a2
paper: paper:10.1016/j.jallcom.2019.05.341:A2, paper:10.1016/j.jallcom.2019.05.341:A2f, paper:10.1016/s0364-5916(02)00012-3:α, paper:10.1016/s0364-5916(02)00012-3:δ
tdb: tdb:FeB-01Pal.tdb:BCC_A2, tdb:FeB-02Rom.tdb:BCC_A2, tdb:FeB-08Yos.tdb:BCC_A2, tdb:FeB-19Wit.tdb:BCC_A2, tdb:FeB-20Tak.tdb:BCC_A2, tdb:FeB-91Pan.tdb:BCC_A2, tdb:FeB-94Hal-LB.tdb:BCC_A2

TDB models of BCC_A2 (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: BCC_A2, type code %B, sha256 d868b8575842d60b…

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

FeB-02Rom.tdb: BCC_A2, type code %B, sha256 76003da4f9d7a948…

52: PHASE BCC_A2 %B 2 1 3 !
53: CONST BCC_A2 : B FE% : VA : !

FeB-08Yos.tdb: BCC_A2, type code %B, sha256 bca7bc67b25d3e8b…

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

FeB-19Wit.tdb: BCC_A2, type code %B, sha256 a20e39e4c8231b9e…

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

FeB-20Tak.tdb: BCC_A2, type code %B, sha256 17fba6129d08f63e…

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

FeB-91Pan.tdb: BCC_A2, type code %B, sha256 9f52784aa22c8ff3…

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

FeB-94Hal-LB.tdb: BCC_A2, type code %B, sha256 724a628400ef810c…

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

Example references (10 of 16; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2012.08.127 M.-A. Van Ende, I.-H. Jung, Critical thermodynamic evaluation and optimization of the FeeB, FeeNd, BeNd and NdeFeeB systems, J. Alloys Compd. 548 (2013) 133e154.
cited as the source of values for this phase
doi:10.1103/physrevb.20.283 C. L. Chien, D. Musser, E. M. Gyorgy, R. C. Sherwood, H. S. Chen, F. E. Luborsky et al., Magnetic properties of amorphous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mn>0</mml:mn><mml:mn>0</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>72</mml:mn><mml:mn/><mml:mo><~</mml:mo><mml:mi>x</mml:mi><mml:mo><~</mml:mo><mml:mn>8</mml:mn><mml:mn>6</mml:mn><mml:mo>)</mml:mo></mml:math>and crystalline<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B, Phys. Rev. B 20, 283-295 (1979).
cited as the source of values for this phase
doi:10.1103/physrevb.7.23 Kenneth A. Murphy, N. Hershkowitz, Temperature-Dependent Hyperfine Interactions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B, Phys. Rev. B 7, 23-31 (1973).
cited as the source of values for this phase
doi:10.1007/bf02650132 T. B. Cameron, J. E. Morral, The solubility of boron in iron, Metall Trans A 17, 1481-1483 (1986).
cited as the source of values for this phase

M2B_C16 (B–Fe)

Id: phase:b-fe:c16-m2b; status assigned
Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type st:c16-al2cu-ti12; 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: DFT agrees: on-hull mp-aaaaacvr and oqmd-7798, space group 140
Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:M2B); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: B 0.3333, Fe 0.6667
Stability: stable in 7 of 7 calculated diagram(s): 300–1683.9 K, x(B) 0.33333–0.33333
Literature: 73 values (73 accepted) from 2 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:b-fe:c16-m2b, corpus:phase:b-fe:m2b-c16
mp: mp:mp-aaaaacvr
oqmd: oqmd:oqmd-7798
paper: paper:10.1016/j.jallcom.2019.05.341:Fe2B, paper:10.1016/j.jallcom.2019.05.341:Fe2Bf, paper:10.1016/s0364-5916(02)00012-3:Fe2B
tdb: tdb:FeB-01Pal.tdb:M2B_C16, tdb:FeB-02Rom.tdb:M2B_C16, tdb:FeB-08Yos.tdb:M2B_C16, tdb:FeB-19Wit.tdb:M2B_C16, tdb:FeB-20Tak.tdb:M2B_C16, tdb:FeB-91Pan.tdb:M2B_C16, tdb:FeB-94Hal-LB.tdb:M2B_C16

TDB models of M2B_C16 (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: M2B_C16, type code %, sha256 d868b8575842d60b…

51: PHASE M2B_C16 % 2 2 1 !
52: CONST M2B_C16 : FE : B : !

FeB-02Rom.tdb: M2B_C16, type code %A, sha256 76003da4f9d7a948…

67: PHASE M2B_C16 %A 2 2 1 !
68: CONST M2B_C16 : FE : B : !

FeB-08Yos.tdb: M2B_C16, type code %A, sha256 bca7bc67b25d3e8b…

49: PHASE M2B_C16 %A 2 2 1 !
50: CONST M2B_C16 : FE : B : !

FeB-19Wit.tdb: M2B_C16, type code %A, sha256 a20e39e4c8231b9e…

65: PHASE M2B_C16 %A 2 2 1 !
66: CONST M2B_C16 : FE : B : !

FeB-20Tak.tdb: M2B_C16, type code %A, sha256 17fba6129d08f63e…

54: PHASE M2B_C16 %A 2 2 1 !
55: CONST M2B_C16 : FE : B : !

FeB-91Pan.tdb: M2B_C16, type code %A, sha256 9f52784aa22c8ff3…

50: PHASE M2B_C16 %A 2 0.666667 0.333333 !
51: CONST M2B_C16 : FE : B : !

FeB-94Hal-LB.tdb: M2B_C16, type code %, sha256 724a628400ef810c…

50: PHASE M2B_C16 % 2 2 1 !
51: CONST M2B_C16 : FE : B : !

Example references (10 of 21; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2012.08.127 M.-A. Van Ende, I.-H. Jung, Critical thermodynamic evaluation and optimization of the FeeB, FeeNd, BeNd and NdeFeeB systems, J. Alloys Compd. 548 (2013) 133e154.
cited as the source of values for this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1007/bf00775428 K. I. Portnoi, M. Kh. Levinskaya, V. M. Romashov, Constitution diagram of the system iron-boron, Powder Metall Met Ceram 8, 657-659 (1969).
cited as the source of values for this phase
doi:10.1016/j.calphad.2013.08.001 M.G. Poletti, L. Battezzati, Assessment of the ternary Fe-Si-B phase diagram, Calphad 43 (2013) 40e47. , M. Leonowicz, Thermodynamic assessment of
cited as the source of values for this phase
doi:10.1039/b208548h Alexander Zaitsev, Natal'ya Zaitseva, Alexander Kodentsov, Thermodynamic properties and phase equilibria in the iron–boron system. Transition of the Fe–B melt into the amorphous stateElectronic supplementary information (ESI) available: Fig. S1–S4 and Tables S1 and S2. See http://www.rsc.org/suppdata/jm/b2/b208548h/, J. Mater. Chem. 13, 943-950 (2003).
cited as the source of values for this phase

CEMENTITE_D011 (B–Fe)

Id: phase:b-fe:cementite-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Stoichiometry: B 0.2500, Fe 0.7500
Stability: not stable in 1 calculated diagram(s)
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:b-fe:cementite-d011
paper: paper:10.1016/s0364-5916(02)00012-3:Fe3B
tdb: tdb:FeB-01Pal.tdb:CEMENTITE_D011

TDB models of CEMENTITE_D011 (1): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: CEMENTITE_D011, type code %, sha256 d868b8575842d60b…

61: PHASE CEMENTITE_D011 % 2 3 1 !
62: CONST CEMENTITE_D011 : FE : B : !

Example references (1 of 1; assessments first):

doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; reports values for this phase

FCC_A1 (B–Fe)

Id: phase:b-fe: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 7 of 7 calculated diagram(s): 301.08–1802.45 K, x(B) 0–0.00114
Literature: 54 values (54 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:b-fe:fcc-a1
paper: paper:10.1016/j.jallcom.2019.05.341:A1, paper:10.1016/s0364-5916(02)00012-3:γ
tdb: tdb:FeB-01Pal.tdb:FCC_A1, tdb:FeB-02Rom.tdb:FCC_A1, tdb:FeB-08Yos.tdb:FCC_A1, tdb:FeB-19Wit.tdb:FCC_A1, tdb:FeB-20Tak.tdb:FCC_A1, tdb:FeB-91Pan.tdb:FCC_A1, tdb:FeB-94Hal-LB.tdb:FCC_A1

TDB models of FCC_A1 (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: FCC_A1, type code %A, sha256 d868b8575842d60b…

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

FeB-02Rom.tdb: FCC_A1, type code %A, sha256 76003da4f9d7a948…

47: PHASE FCC_A1 %A 2 1 1 !
48: CONST FCC_A1 : B FE% : VA : !

FeB-08Yos.tdb: FCC_A1, type code %A, sha256 bca7bc67b25d3e8b…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : B FE% : VA : !

FeB-19Wit.tdb: FCC_A1, type code %A, sha256 a20e39e4c8231b9e…

35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : FE : B VA% : !

FeB-20Tak.tdb: FCC_A1, type code %A, sha256 17fba6129d08f63e…

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

FeB-91Pan.tdb: FCC_A1, type code %A, sha256 9f52784aa22c8ff3…

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

FeB-94Hal-LB.tdb: FCC_A1, type code %A, sha256 724a628400ef810c…

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

Example references (10 of 13; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2012.08.127 M.-A. Van Ende, I.-H. Jung, Critical thermodynamic evaluation and optimization of the FeeB, FeeNd, BeNd and NdeFeeB systems, J. Alloys Compd. 548 (2013) 133e154.
cited as the source of values for this phase
doi:10.1016/j.calphad.2013.08.001 M.G. Poletti, L. Battezzati, Assessment of the ternary Fe-Si-B phase diagram, Calphad 43 (2013) 40e47. , M. Leonowicz, Thermodynamic assessment of
cited as the source of values for this phase
doi:10.1016/s0925-8388(96)02570-4 Livio Battezzati, Carlo Antonione, Marcello Baricco, Undercooling of Ni-B and Fe-B alloys and their metastable phase diagrams, Journal of Alloys and Compounds 247, 164-171 (1997).
cited as the source of values for this phase
doi:10.1039/b208548h Alexander Zaitsev, Natal'ya Zaitseva, Alexander Kodentsov, Thermodynamic properties and phase equilibria in the iron–boron system. Transition of the Fe–B melt into the amorphous stateElectronic supplementary information (ESI) available: Fig. S1–S4 and Tables S1 and S2. See http://www.rsc.org/suppdata/jm/b2/b208548h/, J. Mater. Chem. 13, 943-950 (2003).
cited as the source of values for this phase

FE3B_HT (B–Fe)

Id: phase:b-fe:fe3b; status assigned
Structure: Ti3P · tP32 · P4_2/n (86); type st:ti3p-tp32; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: B 0.2500, Fe 0.7500
Stability: not stable in 1 calculated diagram(s)
Literature: 15 values (15 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:b-fe:fe3b
paper: paper:10.1016/j.jallcom.2019.05.341:tp-Fe3B
tdb: tdb:FeB-19Wit.tdb:FE3B_HT

TDB models of FE3B_HT (1): PHASE and CONSTITUENT statements as written

FeB-19Wit.tdb: FE3B_HT, type code %A, sha256 a20e39e4c8231b9e…

60: PHASE FE3B_HT %A 2 3 1 !
61: CONST FE3B_HT : FE : B : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.08.001 M.G. Poletti, L. Battezzati, Assessment of the ternary Fe-Si-B phase diagram, Calphad 43 (2013) 40e47. , M. Leonowicz, Thermodynamic assessment of
cited as the source of values for this phase
doi:10.1016/s0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Thermodynamic analysis of glass formation in Fe-B system, Calphad 25, 625-637 (2001).
cited as the source of values for this phase
doi:10.1007/s11664-015-4112-y G. J. Zhou, Y. Luo, Y. Zhou, Thermodynamic Reassessment of the Nd-Fe-B Ternary System, Journal of Elec Materi 45, 418-425 (2016).
cited as the source of values for this phase
doi:10.1016/s0925-8388(96)02570-4 Livio Battezzati, Carlo Antonione, Marcello Baricco, Undercooling of Ni-B and Fe-B alloys and their metastable phase diagrams, Journal of Alloys and Compounds 247, 164-171 (1997).
cited as the source of values for this phase

FE3B_D0E (B–Fe)

Id: phase:b-fe:fe3b-d0e; status assigned
Structure: Ni3P · D0_e · tI32 · I-4 (82); type st:d0-e-ni3p-ti32; tier A: standard phase name; confidence high
Stoichiometry: B 0.2500, Fe 0.7500
Stability: not stable in 1 calculated diagram(s)
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:b-fe:fe3b-d0e
paper: paper:10.1016/j.jallcom.2019.05.341:bct-Fe3B
tdb: tdb:FeB-19Wit.tdb:FE3B_D0E

TDB models of FE3B_D0E (1): PHASE and CONSTITUENT statements as written

FeB-19Wit.tdb: FE3B_D0E, type code %A, sha256 a20e39e4c8231b9e…

55: PHASE FE3B_D0E %A 2 3 1 !
56: CONST FE3B_D0E : FE : B : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-4596(84)90340-2 D. Fruchart, P. Chaudouet, R. Fruchart, A. Rouault, J.P. Senateur, Etudes structurales de compose´s de type ce´mentite: Effet de l'hydroge`ne sur Fe3C suivi par diffraction neutronique. Spectrome´trie Mo¨ssbauer sur FeCo2B et Co3B dope´s au57Fe, Journal of Solid State Chemistry 51, 246-252 (1984).
cited as the source of values for this phase
doi:10.1016/0304-8853(89)90333-8 R. Coehoorn, D.B. de Mooij, C. de Waard, Meltspun permanent magnet materials containing Fe3B as the main phase, Journal of Magnetism and Magnetic Materials 80, 101-104 (1989).
cited as the source of values for this phase
doi:10.1103/physrevb.20.283 C. L. Chien, D. Musser, E. M. Gyorgy, R. C. Sherwood, H. S. Chen, F. E. Luborsky et al., Magnetic properties of amorphous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mn>0</mml:mn><mml:mn>0</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>72</mml:mn><mml:mn/><mml:mo><~</mml:mo><mml:mi>x</mml:mi><mml:mo><~</mml:mo><mml:mn>8</mml:mn><mml:mn>6</mml:mn><mml:mo>)</mml:mo></mml:math>and crystalline<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B, Phys. Rev. B 20, 283-295 (1979).
cited as the source of values for this phase
doi:10.1103/physrevb.56.3153 Yong Kong, Fashen Li, Cohesive energy, local magnetic properties, and Curie temperature of Fe<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B studied using the self-consistent LMTO method, Phys. Rev. B 56, 3153-3158 (1997).
cited as the source of values for this phase

HCP_A3 (B–Fe)

Id: phase:b-fe: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 7 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:b-fe:hcp-a3
tdb: tdb:FeB-01Pal.tdb:HCP_A3, tdb:FeB-02Rom.tdb:HCP_A3, tdb:FeB-08Yos.tdb:HCP_A3, tdb:FeB-19Wit.tdb:HCP_A3, tdb:FeB-20Tak.tdb:HCP_A3, tdb:FeB-91Pan.tdb:HCP_A3, tdb:FeB-94Hal-LB.tdb:HCP_A3

TDB models of HCP_A3 (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: HCP_A3, type code %A, sha256 d868b8575842d60b…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : B FE% : VA : !

FeB-02Rom.tdb: HCP_A3, type code %A, sha256 76003da4f9d7a948…

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

FeB-08Yos.tdb: HCP_A3, type code %A, sha256 bca7bc67b25d3e8b…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : B FE% : VA : !

FeB-19Wit.tdb: HCP_A3, type code %A, sha256 a20e39e4c8231b9e…

45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : FE : B VA% : !

FeB-20Tak.tdb: HCP_A3, type code %A, sha256 17fba6129d08f63e…

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

FeB-91Pan.tdb: HCP_A3, type code %A, sha256 9f52784aa22c8ff3…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : B FE% : VA : !

FeB-94Hal-LB.tdb: HCP_A3, type code %A, sha256 724a628400ef810c…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : B FE% : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase

LIQUID (B–Fe)

Id: phase:b-fe:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 1430.82–4000 K, x(B) 0–1
Literature: 124 values (122 accepted) from 4 papers
Interactive: phase registry entry

Names (13): corpus: corpus:phase:b-fe:liquid
paper: paper:10.1007/s11664-015-4112-y:liquid, paper:10.1016/j.jallcom.2019.05.341:L, paper:10.1016/s0364-5916(02)00012-3:L, paper:10.1016/s0364-5916(02)00012-3:liquid, paper:10.1016/s0925-8388(01)01777-7:L
tdb: tdb:FeB-01Pal.tdb:LIQUID, tdb:FeB-02Rom.tdb:LIQUID, tdb:FeB-08Yos.tdb:LIQUID, tdb:FeB-19Wit.tdb:LIQUID, tdb:FeB-20Tak.tdb:LIQUID, tdb:FeB-91Pan.tdb:LIQUID, tdb:FeB-94Hal-LB.tdb:LIQUID

TDB models of LIQUID (7): PHASE and CONSTITUENT statements as written

FeB-01Pal.tdb: LIQUID, type code %, sha256 d868b8575842d60b…

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

FeB-02Rom.tdb: LIQUID, type code %, sha256 76003da4f9d7a948…

42: PHASE LIQUID:L % 1 1 !
43: CONST LIQUID:L : B FE : !

FeB-08Yos.tdb: LIQUID, type code %, sha256 bca7bc67b25d3e8b…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : B FE : !

FeB-19Wit.tdb: LIQUID, type code %, sha256 a20e39e4c8231b9e…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : B FE : !

FeB-20Tak.tdb: LIQUID, type code %, sha256 17fba6129d08f63e…

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

FeB-91Pan.tdb: LIQUID, type code %, sha256 9f52784aa22c8ff3…

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

FeB-94Hal-LB.tdb: LIQUID, type code %, sha256 724a628400ef810c…

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

Example references (10 of 13; assessments first):

doi:10.1016/j.jallcom.2019.05.341 V.T. Witusiewicz, A.A. Bondar, U. Hecht, A. Theofilatos, N.I. Tsyganenko, S.V. Utkin et al., Experimental study and thermodynamic re-modelling of the constituent binaries and ternary B–Fe–Ti system, Journal of Alloys and Compounds 800, 419-449 (2019).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00012-3 M. Palumbo, G. Cacciamani, E. Bosco, M. Baricco, Calphad, 25, 625-37(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1515/ijmr-1994-851002 B. Hallemans, P. Wollants, J.R. Roos, Z. Metallkd. 85 (1994) 676–682.
assessment that models this phase; cited as the source of values for this phase
doi:10.2355/isijinternational.48.835 K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008).
assessment that models this phase
doi:10.2355/tetsutohagane.TETSU-2019-097 K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020).
assessment that models this phase
doi:10.1007/s11664-015-4112-y G. J. Zhou, Y. Luo, Y. Zhou, Thermodynamic Reassessment of the Nd-Fe-B Ternary System, Journal of Elec Materi 45, 418-425 (2016).
cited as the source of values for this phase; reports values for this phase
doi:10.1016/s0925-8388(01)01777-7 T Van Rompaey, K.C Hari Kumar, P Wollants, Thermodynamic optimization of the B–Fe system, Journal of Alloys and Compounds 334, 173-181 (2002).
reports values for this phase
doi:10.1016/j.jallcom.2012.08.127 M.-A. Van Ende, I.-H. Jung, Critical thermodynamic evaluation and optimization of the FeeB, FeeNd, BeNd and NdeFeeB systems, J. Alloys Compd. 548 (2013) 133e154.
cited as the source of values for this phase
doi:10.1007/bf00652720 L. G. Voroshnin, L. S. Lyakhovich, G. G. Panich, G. F. Protasevich, The structure of Fe?B alloys, Met Sci Heat Treat 12, 732-735 (1970).
cited as the source of values for this phase
doi:10.1016/j.calphad.2013.08.001 M.G. Poletti, L. Battezzati, Assessment of the ternary Fe-Si-B phase diagram, Calphad 43 (2013) 40e47. , M. Leonowicz, Thermodynamic assessment of
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}
}