# B–Cr phases > B–Cr system: 12 phases (tier A 6, tier C 1, liquid 1, needs_review 4); 10 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/B-CR.html · Markdown: https://data.orchid-project.org/phases/pages/B-CR.md 12 phases (tier A 6, tier C 1, liquid 1, needs_review 4); 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](https://orchid-project.org/phases/?q=B-CR) · [full JSON](https://data.orchid-project.org/phases/systems/B-CR.json) · [B–Cr system page](https://data.orchid-project.org/systems/B-CR.html) · [Markdown](https://data.orchid-project.org/phases/pages/B-CR.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the B–Cr system (12) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [ALPHA_RHOMBO_B](#phase-b-cr-b-alpha-rhombo); _phase:b-cr:b-alpha-rhombo_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–1388 K, x(B) 1–1 | 0 | 3 | | [BETA_RHOMBO_B](#phase-b-cr-b-beta-rhombo); _phase:b-cr:b-beta-rhombo_ | | needs_review | stable in 3 of 3 calculated diagram(s): 1388–2348 K, x(B) 1–1 | 6 | 3 | | [MB_B33](#phase-b-cr-b33-mb); _phase:b-cr:b33-mb_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–2373.36 K, x(B) 0.5–0.5 | 10 | 3 | | [BCC_A2](#phase-b-cr-bcc-a2); _phase:b-cr:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–3999.86 K, x(B) 0–0.01722 | 4 | 3 | | [MB2_C32](#phase-b-cr-c32-mb2); _phase:b-cr:c32-mb2_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–2480.05 K, x(B) 0.66481–0.66667 | 8 | 3 | | [CR2B_CB](#phase-b-cr-cr2b-cb); _phase:b-cr:cr2b-cb_ | CuMg2 · C_b · oF48 · Fddd (70) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2149.2 K, x(B) 0.33333–0.33333 | 8 | 3 | | [CR3B4_D7B](#phase-b-cr-cr3b4-d7b); _phase:b-cr:cr3b4-d7b_ | Ta3B4 · D7_b · oI14 · Immm (71) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2356.29 K, x(B) 0.57143–0.57143 | 8 | 3 | | [CR5B3_D8L](#phase-b-cr-cr5b3-d8l); _phase:b-cr:cr5b3-d8l_ | Cr5B3 · D8_l · tI32 · I4/mcm (140) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2186.75 K, x(B) 0.375–0.375 | 8 | 3 | | [CRB4](#phase-b-cr-crb4); _phase:b-cr:crb4_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–1818.3 K, x(B) 0.8–0.8 | 5 | 3 | | [FCC_A1](#phase-b-cr-fcc-a1); _phase:b-cr:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [HCP_A3](#phase-b-cr-hcp-a3); _phase:b-cr:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [LIQUID](#phase-b-cr-liquid); _phase:b-cr:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 1878.38–4000 K, x(B) 0–1 | 20 | 3 | ## ALPHA_RHOMBO_B (B–Cr) - Id: `phase:b-cr:b-alpha-rhombo`; status `needs_review` - No structure assigned. Why: name_has_descriptive_tokens:RHOMBO; no_structure_token - Candidate (sgte_mmc2): alpha-B · hR12 · R-3m (166) — Hallstedt 2025 mmc2 row for ALPHA_RHOMBO_B: Si_nB - Candidate (tdb_comment): alpha-B · hR12 · R-3m — CrB-02Cam.tdb: 'Prototype alpha-B (hR12, R-3m)' - Candidate (tdb_comment): alpha-B · hR12 · R-3m — CrB-08Yam.tdb: 'Prototype alpha-B (hR12, R-3m)' - Candidate (tdb_comment): alpha-B · hR12 · R-3m — CrB-91Pan-LB.tdb: 'Prototype alpha-B (hR12, R-3m)' - Stoichiometry: B 1.0000 - Stability: stable in 3 of 3 calculated diagram(s): 300–1388 K, x(B) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:b-alpha-rhombo) Names (4): _corpus: _corpus:phase:b-cr:b-alpha-rhombo _tdb: _tdb:CrB-02Cam.tdb:ALPHA_RHOMBO_B, tdb:CrB-08Yam.tdb:ALPHA_RHOMBO_B, tdb:CrB-91Pan-LB.tdb:ALPHA_RHOMBO_B ### TDB models of ALPHA_RHOMBO_B (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): ALPHA_RHOMBO_B, type code %, sha256 `e712fc05d415dc32…` ~~~~text 42: PHASE ALPHA_RHOMBO_B % 1 1 ! 43: CONST ALPHA_RHOMBO_B : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): ALPHA_RHOMBO_B, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 57: PHASE ALPHA_RHOMBO_B % 1 1 ! 58: CONST ALPHA_RHOMBO_B : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): ALPHA_RHOMBO_B, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 41: PHASE ALPHA_RHOMBO_B % 1 1 ! 42: CONST ALPHA_RHOMBO_B : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## BETA_RHOMBO_B (B–Cr) - Id: `phase:b-cr: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 — CrB-02Cam.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — CrB-08Yam.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — CrB-91Pan-LB.tdb: 'Prototype beta-B (hR105, R-3m)' - Stoichiometry: B 1.0000 - Stability: stable in 3 of 3 calculated diagram(s): 1388–2348 K, x(B) 1–1 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:b-beta-rhombo) Names (6): _corpus: _corpus:phase:b-cr:b-beta-rhombo, corpus:phase:b-cr:beta-rhombo-b _paper: _paper:10.1016/s0364-5916(02)00058-5:β(B) _tdb: _tdb:CrB-02Cam.tdb:BETA_RHOMBO_B, tdb:CrB-08Yam.tdb:BETA_RHOMBO_B, tdb:CrB-91Pan-LB.tdb:BETA_RHOMBO_B ### TDB models of BETA_RHOMBO_B (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): BETA_RHOMBO_B, type code %, sha256 `e712fc05d415dc32…` ~~~~text 47: PHASE BETA_RHOMBO_B % 1 1 ! 48: CONST BETA_RHOMBO_B : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): BETA_RHOMBO_B, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 62: PHASE BETA_RHOMBO_B % 1 1 ! 63: CONST BETA_RHOMBO_B : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): BETA_RHOMBO_B, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 46: PHASE BETA_RHOMBO_B % 1 1 ! 47: CONST BETA_RHOMBO_B : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## MB_B33 (B–Cr) - Id: `phase:b-cr:b33-mb`; status `needs_review` - No structure assigned. Why: assessment_declared_conflicts_with_dft; name_has_descriptive_tokens:MB; no_structure_token; structure_token_is_also_a_formula - Candidate (dft_mp): I4_1/amd (141) — on-hull MP CrB at x(CR)=0.5000 - Candidate (dft_oqmd): I41/amd (141) — on-hull OQMD B1 Cr1 at x(CR)=0.5000 - Candidate (literature_printed): CrB · oC8 — printed with a label mapped to this phase - Candidate (sgte_mmc2): CrB · B33 · oC8 · Cmcm (63) — Hallstedt 2025 mmc2 row for MB_B33: CrB, beta-MoB, VB (also B_f) - Candidate (tdb_comment): CrB · oC8 · Cmcm — CrB-02Cam.tdb: 'Prototype CrB (oC8, Cmcm)' - Candidate (tdb_comment): CrB · oC8 · Cmcm — CrB-08Yam.tdb: 'Prototype CrB (oC8, Cmcm)' - Candidate (tdb_comment): CrB · oC8 · Cmcm — CrB-91Pan-LB.tdb: 'Prototype CrB (oC8, Cmcm)' - Stoichiometry: B 0.5000, Cr 0.5000 - Stability: stable in 3 of 3 calculated diagram(s): 300–2373.36 K, x(B) 0.5–0.5 - Literature: 10 values (10 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:b33-mb) Names (6): _corpus: _corpus:phase:b-cr:b33-mb, corpus:phase:b-cr:mb-b33 _paper: _paper:10.1016/s0364-5916(02)00058-5:CrB _tdb: _tdb:CrB-02Cam.tdb:MB_B33, tdb:CrB-08Yam.tdb:MB_B33, tdb:CrB-91Pan-LB.tdb:MB_B33 ### TDB models of MB_B33 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): MB_B33, type code %, sha256 `e712fc05d415dc32…` ~~~~text 62: PHASE MB_B33 % 2 1 1 ! 63: CONST MB_B33 : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): MB_B33, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 77: PHASE MB_B33 % 2 1 1 ! 78: CONST MB_B33 : CR : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): MB_B33, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 61: PHASE MB_B33 % 2 1 1 ! 62: CONST MB_B33 : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## BCC_A2 (B–Cr) - Id: `phase:b-cr: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): 300–3999.86 K, x(B) 0–0.01722 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:bcc-a2) Names (5): _corpus: _corpus:phase:b-cr:bcc-a2 _paper: _paper:10.1016/s0364-5916(02)00058-5:BCC(Cr) _tdb: _tdb:CrB-02Cam.tdb:BCC_A2, tdb:CrB-08Yam.tdb:BCC_A2, tdb:CrB-91Pan-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): BCC_A2, type code %B, sha256 `e712fc05d415dc32…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : CR% : B VA% : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): BCC_A2, type code %B, sha256 `8f5a8bb878cae5a8…` ~~~~text 47: PHASE BCC_A2 %B 2 1 3 ! 48: CONST BCC_A2 : B CR% : VA : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): BCC_A2, type code %B, sha256 `f54a6c7ef2cf6747…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : CR% : B VA% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## MB2_C32 (B–Cr) - Id: `phase:b-cr: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](https://doi.org/10.1016/j.calphad.2025.102833) - 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 - Stability: stable in 3 of 3 calculated diagram(s): 300–2480.05 K, x(B) 0.66481–0.66667 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:c32-mb2) Names (6): _corpus: _corpus:phase:b-cr:c32-mb2, corpus:phase:b-cr:mb2-c32 _paper: _paper:10.1016/s0364-5916(02)00058-5:CrB2 _tdb: _tdb:CrB-02Cam.tdb:MB2_C32, tdb:CrB-08Yam.tdb:MB2_C32, tdb:CrB-91Pan-LB.tdb:MB2_C32 ### TDB models of MB2_C32 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): MB2_C32, type code %, sha256 `e712fc05d415dc32…` ~~~~text 72: PHASE MB2_C32 % 2 1 2 ! 73: CONST MB2_C32 : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): MB2_C32, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 87: PHASE MB2_C32 % 2 1 2 ! 88: CONST MB2_C32 : CR VA : B VA : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): MB2_C32, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 71: PHASE MB2_C32 % 2 1 2 ! 72: CONST MB2_C32 : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## CR2B_CB (B–Cr) - Id: `phase:b-cr:cr2b-cb`; status `assigned` - Structure: CuMg2 · C_b · oF48 · Fddd (70); type `st:c-b-cumg2-of48`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaabgkiy and oqmd-28322, space group 70 - Stoichiometry: B 0.3333, Cr 0.6667 - Stability: stable in 3 of 3 calculated diagram(s): 300–2149.2 K, x(B) 0.33333–0.33333 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:cr2b-cb) Names (7): _corpus: _corpus:phase:b-cr:cr2b-cb _mp: _mp:mp-aaabgkiy _oqmd: _oqmd:oqmd-28322 _paper: _paper:10.1016/s0364-5916(02)00058-5:Cr2B _tdb: _tdb:CrB-02Cam.tdb:CR2B_CB, tdb:CrB-08Yam.tdb:CR2B_CB, tdb:CrB-91Pan-LB.tdb:CR2B_CB ### TDB models of CR2B_CB (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): CR2B_CB, type code %, sha256 `e712fc05d415dc32…` ~~~~text 52: PHASE CR2B_CB % 2 2 1 ! 53: CONST CR2B_CB : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): CR2B_CB, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 67: PHASE CR2B_CB % 2 2 1 ! 68: CONST CR2B_CB : CR : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): CR2B_CB, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 51: PHASE CR2B_CB % 2 2 1 ! 52: CONST CR2B_CB : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## CR3B4_D7B (B–Cr) - Id: `phase:b-cr:cr3b4-d7b`; status `assigned` - Structure: Ta3B4 · D7_b · oI14 · Immm (71); type `st:d7-b-ta3b4-oi14`; tier A: standard phase name; confidence high - Stoichiometry: B 0.5714, Cr 0.4286 - Stability: stable in 3 of 3 calculated diagram(s): 300–2356.29 K, x(B) 0.57143–0.57143 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:cr3b4-d7b) Names (5): _corpus: _corpus:phase:b-cr:cr3b4-d7b _paper: _paper:10.1016/s0364-5916(02)00058-5:Cr3B4 _tdb: _tdb:CrB-02Cam.tdb:CR3B4_D7B, tdb:CrB-08Yam.tdb:CR3B4_D7B, tdb:CrB-91Pan-LB.tdb:CR3B4_D7B ### TDB models of CR3B4_D7B (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): CR3B4_D7B, type code %, sha256 `e712fc05d415dc32…` ~~~~text 67: PHASE CR3B4_D7B % 2 3 4 ! 68: CONST CR3B4_D7B : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): CR3B4_D7B, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 82: PHASE CR3B4_D7B % 2 3 4 ! 83: CONST CR3B4_D7B : CR : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): CR3B4_D7B, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 66: PHASE CR3B4_D7B % 2 3 4 ! 67: CONST CR3B4_D7B : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## CR5B3_D8L (B–Cr) - Id: `phase:b-cr:cr5b3-d8l`; status `assigned` - Structure: Cr5B3 · D8_l · tI32 · I4/mcm (140); type `st:d8-l-cr5b3-ti32`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaaxcr and oqmd-5250, space group 140 - Stoichiometry: B 0.3750, Cr 0.6250 - Stability: stable in 3 of 3 calculated diagram(s): 300–2186.75 K, x(B) 0.375–0.375 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:cr5b3-d8l) Names (7): _corpus: _corpus:phase:b-cr:cr5b3-d8l _mp: _mp:mp-aaaaaxcr _oqmd: _oqmd:oqmd-5250 _paper: _paper:10.1016/s0364-5916(02)00058-5:Cr5B3 _tdb: _tdb:CrB-02Cam.tdb:CR5B3_D8L, tdb:CrB-08Yam.tdb:CR5B3_D8L, tdb:CrB-91Pan-LB.tdb:CR5B3_D8L ### TDB models of CR5B3_D8L (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): CR5B3_D8L, type code %, sha256 `e712fc05d415dc32…` ~~~~text 57: PHASE CR5B3_D8L % 2 5 3 ! 58: CONST CR5B3_D8L : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): CR5B3_D8L, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 72: PHASE CR5B3_D8L % 2 5 3 ! 73: CONST CR5B3_D8L : CR : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): CR5B3_D8L, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 56: PHASE CR5B3_D8L % 2 5 3 ! 57: CONST CR5B3_D8L : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## CRB4 (B–Cr) - Id: `phase:b-cr:crb4`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:sgte_mmc2_row_disagrees_with_dft; dft_space_group_58_matches_0_structure_types; no_structure_token; sgte_mmc2_row_disagrees_with_dft - Candidate (dft_mp): Pnnm (58) — on-hull MP CrB4 at x(CR)=0.2000 - Candidate (dft_oqmd): Pnnm (58) — on-hull OQMD B4 Cr1 at x(CR)=0.2000 - Candidate (literature_printed): CrB4 — printed with a label mapped to this phase - Candidate (literature_printed): CrB4 · oI10 — printed with a label mapped to this phase - Candidate (sgte_mmc2): CrB4 · oI10 · Immm (71) — Hallstedt 2025 mmc2 row for CRB4: CrB4 - Candidate (tdb_comment): CrB4 · oI10 · Immm — CrB-02Cam.tdb: 'Prototype CrB4 (oI10, Immm)' - Candidate (tdb_comment): CrB4 · oI10 · Immm — CrB-08Yam.tdb: 'Prototype CrB4 (oI10, Immm)' - Candidate (tdb_comment): CrB4 · oI10 · Immm — CrB-91Pan-LB.tdb: 'Prototype CrB4 (oI10, Immm)' - Stoichiometry: B 0.8000, Cr 0.2000 - Stability: stable in 3 of 3 calculated diagram(s): 300–1818.3 K, x(B) 0.8–0.8 - Literature: 5 values (5 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:crb4) Names (5): _corpus: _corpus:phase:b-cr:crb4 _paper: _paper:10.1016/s0364-5916(02)00058-5:CrB4 _tdb: _tdb:CrB-02Cam.tdb:CRB4, tdb:CrB-08Yam.tdb:CRB4, tdb:CrB-91Pan-LB.tdb:CRB4 ### TDB models of CRB4 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): CRB4, type code %, sha256 `e712fc05d415dc32…` ~~~~text 77: PHASE CRB4 % 2 1 4 ! 78: CONST CRB4 : CR : B : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): CRB4, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 92: PHASE CRB4 % 2 1 4 ! 93: CONST CRB4 : CR : B : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): CRB4, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 76: PHASE CRB4 % 2 1 4 ! 77: CONST CRB4 : CR : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## FCC_A1 (B–Cr) - Id: `phase:b-cr: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 3 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:fcc-a1) Names (4): _corpus: _corpus:phase:b-cr:fcc-a1 _tdb: _tdb:CrB-02Cam.tdb:FCC_A1, tdb:CrB-08Yam.tdb:FCC_A1, tdb:CrB-91Pan-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): FCC_A1, type code %A, sha256 `e712fc05d415dc32…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : CR : B VA% : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): FCC_A1, type code %A, sha256 `8f5a8bb878cae5a8…` ~~~~text 42: PHASE FCC_A1 %A 2 1 1 ! 43: CONST FCC_A1 : B CR : VA : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): FCC_A1, type code %A, sha256 `f54a6c7ef2cf6747…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : CR : B VA% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## HCP_A3 (B–Cr) - Id: `phase:b-cr: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](https://orchid-project.org/phases/#phase:b-cr:hcp-a3) Names (4): _corpus: _corpus:phase:b-cr:hcp-a3 _tdb: _tdb:CrB-02Cam.tdb:HCP_A3, tdb:CrB-08Yam.tdb:HCP_A3, tdb:CrB-91Pan-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): HCP_A3, type code %A, sha256 `e712fc05d415dc32…` ~~~~text 37: PHASE HCP_A3 %A 2 1 0.5 ! 38: CONST HCP_A3 : CR : B VA% : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): HCP_A3, type code %A, sha256 `8f5a8bb878cae5a8…` ~~~~text 52: PHASE HCP_A3 %A 2 1 0.5 ! 53: CONST HCP_A3 : B CR : VA : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): HCP_A3, type code %A, sha256 `f54a6c7ef2cf6747…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : CR : B VA% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _assessment that models this phase_ ## LIQUID (B–Cr) - Id: `phase:b-cr:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 1878.38–4000 K, x(B) 0–1 - Literature: 20 values (20 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-cr:liquid) Names (5): _corpus: _corpus:phase:b-cr:liquid _paper: _paper:10.1016/s0364-5916(02)00058-5:L _tdb: _tdb:CrB-02Cam.tdb:LIQUID, tdb:CrB-08Yam.tdb:LIQUID, tdb:CrB-91Pan-LB.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [CrB-02Cam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-02Cam.tdb): LIQUID, type code %, sha256 `e712fc05d415dc32…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : B CR : ! ~~~~ [CrB-08Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-08Yam.tdb): LIQUID, type code %, sha256 `8f5a8bb878cae5a8…` ~~~~text 37: PHASE LIQUID:L % 1 1 ! 38: CONST LIQUID:L : B CR : ! ~~~~ [CrB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrB-91Pan-LB.tdb): LIQUID, type code %, sha256 `f54a6c7ef2cf6747…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : B CR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0364-5916(02)00058-5](https://doi.org/10.1016/S0364-5916%2802%2900058-5) C.E. Campbell, U.R. Kattner, Calphad, 26, 477-90(2002). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/HTMP.2008.27.4.269](https://doi.org/10.1515/HTMP.2008.27.4.269) K. Yamada, H. Ohtani, M. Hasebe, High Temp. Mater. Processes., 27, 269-83(2008). _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). https://doi.org/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). https://doi.org/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. ```bibtex @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} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).