B–V phases

11 phases (tier A 5, tier B 1, tier C 3, liquid 1, needs_review 1); 9 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–V system page · Markdown · field reference

Phases of the B–V system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BETA_RHOMBO_B phase:b-v:b-beta-rhombo		needs_review	stable in 4 of 4 calculated diagram(s): 300–2405.36 K, x(B) 1–1	0	4
MB_B33 phase:b-v:b33-mb	CrB · B33 · oC8 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–2858.84 K, x(B) 0.5–0.5	1	4
BCC_A2 phase:b-v:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–3999.94 K, x(B) 0–0.00786	0	4
MB2_C32 phase:b-v:c32-mb2	AlB2 · C32 · hP3 · P6/mmm (191)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–3040 K, x(B) 0.66667–0.66667	1	4
FCC_A1 phase:b-v:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 4 calculated diagram(s)	0	4
HCP_A3 phase:b-v:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 4 calculated diagram(s)	0	4
LIQUID phase:b-v:liquid	liquid	liquid	stable in 4 of 4 calculated diagram(s): 2004.56–4000 K, x(B) 0–1	14	4
V2B3 phase:b-v:v2b3	V2B3 · oC20 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–2923.06 K, x(B) 0.6–0.6	0	4
V3B2_D5A phase:b-v:v3b2-d5a	Si2U3 · D5_a · tP10 · P4/mbm (127)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–2195.92 K, x(B) 0.4–0.4	1	4
V3B4_D7B phase:b-v:v3b4-d7b	Ta3B4 · D7_b · oI14 · Immm (71)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–2912.58 K, x(B) 0.57143–0.57143	1	4
V5B6 phase:b-v:v5b6	V5B6 · oC22 · Cmmm (65)	tier B: DFT-supported (unique MP + OQMD match)	stable in 4 of 4 calculated diagram(s): 300–2857.7 K, x(B) 0.54545–0.54545	2	4

BETA_RHOMBO_B (B–V)

Id: phase:b-v: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 — VB-12Hom.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — VB-17Pin.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — VB-81Spe.tdb: 'Prototype beta-B (hR105, R-3m)'
Candidate (tdb_comment): beta-B · hR105 · R-3m — VB-91Pan-LB.tdb: 'Prototype beta-B (hR105, R-3m)'
Stoichiometry: B 1.0000
Stability: stable in 4 of 4 calculated diagram(s): 300–2405.36 K, x(B) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:b-v:b-beta-rhombo
tdb: tdb:VB-12Hom.tdb:BETA_RHOMBO_B, tdb:VB-17Pin.tdb:BETA_RHOMBO_B, tdb:VB-81Spe.tdb:BETA_RHOMBO_B, tdb:VB-91Pan-LB.tdb:BETA_RHOMBO_B

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

VB-12Hom.tdb: BETA_RHOMBO_B, type code %, sha256 5dc15917ed367b37…

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

VB-17Pin.tdb: BETA_RHOMBO_B, type code %, sha256 672a0c551b49a3b2…

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

VB-81Spe.tdb: BETA_RHOMBO_B, type code %, sha256 3d2fe26a3074d813…

48: PHASE BETA_RHOMBO_B % 1 1 !
49: CONST BETA_RHOMBO_B : B : !

VB-91Pan-LB.tdb: BETA_RHOMBO_B, type code %, sha256 6135bb1fbdaf1397…

40: PHASE BETA_RHOMBO_B % 1 1 !
41: CONST BETA_RHOMBO_B : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

MB_B33 (B–V)

Id: phase:b-v: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
Stoichiometry: B 0.5000, V 0.5000
Stability: stable in 4 of 4 calculated diagram(s): 300–2858.84 K, x(B) 0.5–0.5
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:b-v:b33-mb
paper: paper:10.1016/0022-5088(81)90224-1:VB
tdb: tdb:VB-12Hom.tdb:MB_B33, tdb:VB-17Pin.tdb:MB_B33, tdb:VB-81Spe.tdb:MB_B33, tdb:VB-91Pan-LB.tdb:MB_B33

TDB models of MB_B33 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: MB_B33, type code %, sha256 5dc15917ed367b37…

56: PHASE MB_B33 % 2 1 1 !
57: CONST MB_B33 : V : B : !

VB-17Pin.tdb: MB_B33, type code %, sha256 672a0c551b49a3b2…

54: PHASE MB_B33 % 2 1 1 !
55: CONST MB_B33 : V : B : !

VB-81Spe.tdb: MB_B33, type code %, sha256 3d2fe26a3074d813…

58: PHASE MB_B33 % 2 1 1 !
59: CONST MB_B33 : V : B : !

VB-91Pan-LB.tdb: MB_B33, type code %, sha256 6135bb1fbdaf1397…

50: PHASE MB_B33 % 2 1 1 !
51: CONST MB_B33 : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

BCC_A2 (B–V)

Id: phase:b-v: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 4 of 4 calculated diagram(s): 300–3999.94 K, x(B) 0–0.00786
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:b-v:bcc-a2
tdb: tdb:VB-12Hom.tdb:BCC_A2, tdb:VB-17Pin.tdb:BCC_A2, tdb:VB-81Spe.tdb:BCC_A2, tdb:VB-91Pan-LB.tdb:BCC_A2

TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: BCC_A2, type code %B, sha256 5dc15917ed367b37…

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

VB-17Pin.tdb: BCC_A2, type code %B, sha256 672a0c551b49a3b2…

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

VB-81Spe.tdb: BCC_A2, type code %B, sha256 3d2fe26a3074d813…

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

VB-91Pan-LB.tdb: BCC_A2, type code %B, sha256 6135bb1fbdaf1397…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : V : B VA% : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

MB2_C32 (B–V)

Id: phase:b-v:c32-mb2; status assigned
Structure: AlB2 · C32 · hP3 · P6/mmm (191); type st:c32-alb2-hp3; 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-aaaaacfj and oqmd-109274, space group 191
Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:MB2); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: B 0.6667, V 0.3333
Stability: stable in 4 of 4 calculated diagram(s): 300–3040 K, x(B) 0.66667–0.66667
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:b-v:c32-mb2
mp: mp:mp-aaaaacfj
oqmd: oqmd:oqmd-109274
paper: paper:10.1016/0022-5088(81)90224-1:VB2
tdb: tdb:VB-12Hom.tdb:MB2_C32, tdb:VB-17Pin.tdb:MB2_C32, tdb:VB-81Spe.tdb:MB2_C32, tdb:VB-91Pan-LB.tdb:MB2_C32

TDB models of MB2_C32 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: MB2_C32, type code %, sha256 5dc15917ed367b37…

76: PHASE MB2_C32 % 2 1 2 !
77: CONST MB2_C32 : V : B : !

VB-17Pin.tdb: MB2_C32, type code %, sha256 672a0c551b49a3b2…

74: PHASE MB2_C32 % 2 1 2 !
75: CONST MB2_C32 : V : B : !

VB-81Spe.tdb: MB2_C32, type code %, sha256 3d2fe26a3074d813…

78: PHASE MB2_C32 % 2 1 2 !
79: CONST MB2_C32 : V : B : !

VB-91Pan-LB.tdb: MB2_C32, type code %, sha256 6135bb1fbdaf1397…

70: PHASE MB2_C32 % 2 1 2 !
71: CONST MB2_C32 : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

FCC_A1 (B–V)

Id: phase:b-v:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 4 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:b-v:fcc-a1
tdb: tdb:VB-12Hom.tdb:FCC_A1, tdb:VB-17Pin.tdb:FCC_A1, tdb:VB-81Spe.tdb:FCC_A1, tdb:VB-91Pan-LB.tdb:FCC_A1

TDB models of FCC_A1 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: FCC_A1, type code %A, sha256 5dc15917ed367b37…

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

VB-17Pin.tdb: FCC_A1, type code %A, sha256 672a0c551b49a3b2…

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

VB-81Spe.tdb: FCC_A1, type code %A, sha256 3d2fe26a3074d813…

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

VB-91Pan-LB.tdb: FCC_A1, type code %A, sha256 6135bb1fbdaf1397…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : V : B VA% : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

HCP_A3 (B–V)

Id: phase:b-v: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 4 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:b-v:hcp-a3
tdb: tdb:VB-12Hom.tdb:HCP_A3, tdb:VB-17Pin.tdb:HCP_A3, tdb:VB-81Spe.tdb:HCP_A3, tdb:VB-91Pan-LB.tdb:HCP_A3

TDB models of HCP_A3 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: HCP_A3, type code %A, sha256 5dc15917ed367b37…

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

VB-17Pin.tdb: HCP_A3, type code %A, sha256 672a0c551b49a3b2…

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

VB-81Spe.tdb: HCP_A3, type code %A, sha256 3d2fe26a3074d813…

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

VB-91Pan-LB.tdb: HCP_A3, type code %A, sha256 6135bb1fbdaf1397…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : V : B VA% : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

LIQUID (B–V)

Id: phase:b-v:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 2004.56–4000 K, x(B) 0–1
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:b-v:liquid
paper: paper:10.1016/0022-5088(81)90224-1:L
tdb: tdb:VB-12Hom.tdb:LIQUID, tdb:VB-17Pin.tdb:LIQUID, tdb:VB-81Spe.tdb:LIQUID, tdb:VB-91Pan-LB.tdb:LIQUID

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

VB-12Hom.tdb: LIQUID, type code %, sha256 5dc15917ed367b37…

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

VB-17Pin.tdb: LIQUID, type code %, sha256 672a0c551b49a3b2…

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

VB-81Spe.tdb: LIQUID, type code %, sha256 3d2fe26a3074d813…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : B V : !

VB-91Pan-LB.tdb: LIQUID, type code %, sha256 6135bb1fbdaf1397…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : B V : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

V2B3 (B–V)

Id: phase:b-v:v2b3; status assigned
Structure: V2B3 · oC20 · Cmcm (63); type st:v2b3-oc20; 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_63_matches_3_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: B 0.6000, V 0.4000
Stability: stable in 4 of 4 calculated diagram(s): 300–2923.06 K, x(B) 0.6–0.6
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:b-v:v2b3
tdb: tdb:VB-12Hom.tdb:V2B3, tdb:VB-17Pin.tdb:V2B3, tdb:VB-81Spe.tdb:V2B3, tdb:VB-91Pan-LB.tdb:V2B3

TDB models of V2B3 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: V2B3, type code %, sha256 5dc15917ed367b37…

71: PHASE V2B3 % 2 2 3 !
72: CONST V2B3 : V : B : !

VB-17Pin.tdb: V2B3, type code %, sha256 672a0c551b49a3b2…

69: PHASE V2B3 % 2 2 3 !
70: CONST V2B3 : V : B : !

VB-81Spe.tdb: V2B3, type code %, sha256 3d2fe26a3074d813…

73: PHASE V2B3 % 2 2 3 !
74: CONST V2B3 : V : B : !

VB-91Pan-LB.tdb: V2B3, type code %, sha256 6135bb1fbdaf1397…

65: PHASE V2B3 % 2 2 3 !
66: CONST V2B3 : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

V3B2_D5A (B–V)

Id: phase:b-v:v3b2-d5a; status assigned
Structure: Si2U3 · D5_a · tP10 · P4/mbm (127); type st:d5-a-si2u3-tp10; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaadcl and oqmd-18594, space group 127
Stoichiometry: B 0.4000, V 0.6000
Stability: stable in 4 of 4 calculated diagram(s): 300–2195.92 K, x(B) 0.4–0.4
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:b-v:v3b2-d5a
mp: mp:mp-aaaaadcl
oqmd: oqmd:oqmd-18594
paper: paper:10.1016/0022-5088(81)90224-1:V3B2
tdb: tdb:VB-12Hom.tdb:V3B2_D5A, tdb:VB-17Pin.tdb:V3B2_D5A, tdb:VB-81Spe.tdb:V3B2_D5A, tdb:VB-91Pan-LB.tdb:V3B2_D5A

TDB models of V3B2_D5A (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: V3B2_D5A, type code %, sha256 5dc15917ed367b37…

51: PHASE V3B2_D5A % 2 3 2 !
52: CONST V3B2_D5A : V : B : !

VB-17Pin.tdb: V3B2_D5A, type code %, sha256 672a0c551b49a3b2…

49: PHASE V3B2_D5A % 2 3 2 !
50: CONST V3B2_D5A : V : B : !

VB-81Spe.tdb: V3B2_D5A, type code %, sha256 3d2fe26a3074d813…

53: PHASE V3B2_D5A % 2 3 2 !
54: CONST V3B2_D5A : V : B : !

VB-91Pan-LB.tdb: V3B2_D5A, type code %, sha256 6135bb1fbdaf1397…

45: PHASE V3B2_D5A % 2 3 2 !
46: CONST V3B2_D5A : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

V3B4_D7B (B–V)

Id: phase:b-v:v3b4-d7b; status assigned
Structure: Ta3B4 · D7_b · oI14 · Immm (71); type st:d7-b-ta3b4-oi14; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaabgkda and oqmd-28626, space group 71
Stoichiometry: B 0.5714, V 0.4286
Stability: stable in 4 of 4 calculated diagram(s): 300–2912.58 K, x(B) 0.57143–0.57143
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:b-v:v3b4-d7b
mp: mp:mp-aaabgkda
oqmd: oqmd:oqmd-28626
paper: paper:10.1016/0022-5088(81)90224-1:V3B4
tdb: tdb:VB-12Hom.tdb:V3B4_D7B, tdb:VB-17Pin.tdb:V3B4_D7B, tdb:VB-81Spe.tdb:V3B4_D7B, tdb:VB-91Pan-LB.tdb:V3B4_D7B

TDB models of V3B4_D7B (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: V3B4_D7B, type code %, sha256 5dc15917ed367b37…

66: PHASE V3B4_D7B % 2 3 4 !
67: CONST V3B4_D7B : V : B : !

VB-17Pin.tdb: V3B4_D7B, type code %, sha256 672a0c551b49a3b2…

64: PHASE V3B4_D7B % 2 3 4 !
65: CONST V3B4_D7B : V : B : !

VB-81Spe.tdb: V3B4_D7B, type code %, sha256 3d2fe26a3074d813…

68: PHASE V3B4_D7B % 2 3 4 !
69: CONST V3B4_D7B : V : B : !

VB-91Pan-LB.tdb: V3B4_D7B, type code %, sha256 6135bb1fbdaf1397…

60: PHASE V3B4_D7B % 2 3 4 !
61: CONST V3B4_D7B : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (2012).
assessment that models this phase

V5B6 (B–V)

Id: phase:b-v:v5b6; status assigned
Structure: V5B6 · oC22 · Cmmm (65); type st:v5b6-oc22; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: B 0.5455, V 0.4545
Stability: stable in 4 of 4 calculated diagram(s): 300–2857.7 K, x(B) 0.54545–0.54545
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:b-v:v5b6
mp: mp:mp-aaacqqrp
oqmd: oqmd:oqmd-1454661
paper: paper:10.1016/0022-5088(81)90224-1:V5B6
tdb: tdb:VB-12Hom.tdb:V5B6, tdb:VB-17Pin.tdb:V5B6, tdb:VB-81Spe.tdb:V5B6, tdb:VB-91Pan-LB.tdb:V5B6

TDB models of V5B6 (4): PHASE and CONSTITUENT statements as written

VB-12Hom.tdb: V5B6, type code %, sha256 5dc15917ed367b37…

61: PHASE V5B6 % 2 5 6 !
62: CONST V5B6 : V : B : !

VB-17Pin.tdb: V5B6, type code %, sha256 672a0c551b49a3b2…

59: PHASE V5B6 % 2 5 6 !
60: CONST V5B6 : V : B : !

VB-81Spe.tdb: V5B6, type code %, sha256 3d2fe26a3074d813…

63: PHASE V5B6 % 2 5 6 !
64: CONST V5B6 : V : B : !

VB-91Pan-LB.tdb: V5B6, type code %, sha256 6135bb1fbdaf1397…

55: PHASE V5B6 % 2 5 6 !
56: CONST V5B6 : V : B : !

Example references (3 of 3; assessments first):

doi:10.1016/0022-5088(81)90224-1 K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2017.10.001 A.A.A. Pinto da Silva, N. Chaia, F. Ferreira, G.C. Coelho, J.-M. Fiorani, N. David, M. Vilasi, C.A. Nunes, Calphad, 59, 199-206(2017).
assessment that models this phase
doi:10.1016/j.jallcom.2011.11.155 Viera Homolová, Aleš Kroupa, Anna Výrostková, Calculation of Fe–B–V ternary phase diagram, Journal of Alloys and Compounds 520, 30-35 (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}
}