# Al–Ru phases > Al–Ru system: 11 phases (tier A 6, tier C 2, liquid 1, needs_review 2); 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/AL-RU.html · Markdown: https://data.orchid-project.org/phases/pages/AL-RU.md 11 phases (tier A 6, tier C 2, liquid 1, needs_review 2); 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=AL-RU) · [full JSON](https://data.orchid-project.org/phases/systems/AL-RU.json) · [Al–Ru system page](https://data.orchid-project.org/systems/AL-RU.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-RU.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Ru system (11) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AL13RU4](#phase-al-ru-al13ru4); _phase:al-ru:al13ru4_ | Al13Fe4 · mC102 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1724.26 K, x(Ru) 0.23529–0.27245 | 0 | 3 | | [AL2RU_C54](#phase-al-ru-al2ru-c54); _phase:al-ru:al2ru-c54_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–2078.42 K, x(Ru) 0.31036–0.33333 | 0 | 3 | | [AL3RU2](#phase-al-ru-al3ru2); _phase:al-ru:al3ru2_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–1968.42 K, x(Ru) 0.3957–0.4 | 0 | 3 | | [AL5RU2](#phase-al-ru-al5ru2); _phase:al-ru:al5ru2_ | Al5Fe2 · oC24 · Cmcm (63) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 1613.11–1765.05 K, x(Ru) 0.28571–0.28571 | 0 | 1 | | [AL6RU_D2H](#phase-al-ru-al6ru-d2h); _phase:al-ru:al6ru-d2h_ | Al6Mn · D2_h · oC28 · Cmcm (63) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1007.03 K, x(Ru) 0.14286–0.14286 | 0 | 3 | | [ALRU_B2](#phase-al-ru-alru-b2); _phase:al-ru:alru-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–2342.04 K, x(Ru) 0.46569–0.50654 | 0 | 2 | | [BCC_A2](#phase-al-ru-bcc-a2); _phase:al-ru:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 5 | | [B2_BCC](#phase-al-ru-bcc-b2); _phase:al-ru:bcc-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–2391.71 K, x(Ru) 0.42848–0.53955 | 0 | 2 | | [FCC_A1](#phase-al-ru-fcc-a1); _phase:al-ru:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–936.73 K, x(Ru) 0–0 | 0 | 3 | | [HCP_A3](#phase-al-ru-hcp-a3); _phase:al-ru:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–3999.75 K, x(Ru) 0.88228–1 | 0 | 3 | | [LIQUID](#phase-al-ru-liquid); _phase:al-ru:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 921.73–4000 K, x(Ru) 0–1 | 0 | 3 | ## AL13RU4 (Al–Ru) - Id: `phase:al-ru:al13ru4`; status `assigned` - Structure: Al13Fe4 · mC102 · C2/m (12); type `st:al13fe4-mc102`; 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 (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 3 of 3 calculated diagram(s): 300–1724.26 K, x(Ru) 0.23529–0.27245 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:al13ru4) Names (4): _corpus: _corpus:phase:al-ru:al13ru4 _tdb: _tdb:AlRu-03Pri.tdb:AL13RU4, tdb:AlRu-21Liu.tdb:AL13RU4, tdb:AlRu-96Che-LB.tdb:AL13RU4 ### TDB models of AL13RU4 (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): AL13RU4, type code %, sha256 `e4eee0dda908e418…` ~~~~text 71: PHASE AL13RU4 % 3 0.6275 0.235 0.1375 ! 72: CONST AL13RU4 : AL : RU : AL VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): AL13RU4, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 57: PHASE AL13RU4 % 2 13 4 ! 58: CONST AL13RU4 : AL : RU : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): AL13RU4, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 48: PHASE AL13RU4 % 2 13 4 ! 49: CONST AL13RU4 : AL : RU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## AL2RU_C54 (Al–Ru) - Id: `phase:al-ru:al2ru-c54`; status `needs_review` - No structure assigned. Why: sgte_mmc2_row_disagrees_with_name:AL2RU_C54; sgte_mmc2_rows_disagree - Candidate (name_token): TiSi2 · C54 · oF24 · Fddd (70) — Strukturbericht/word 'C54' in the TDB name - Candidate (sgte_mmc2): MoSi2 · C11_b · tI6 · I4/mmm (139) — Hallstedt 2025 mmc2 row for AL2RU_C54: Al2Ru (alt. Si2Ti) - Candidate (sgte_mmc2): TiSi2 · C54 · oF24 · Fddd (70) — Hallstedt 2025 mmc2 row for AL2RU_C54: Al2Ru (alt. MoSi2) - Candidate (tdb_comment): Si2Ti · oF24 · Fddd — AlRu-03Pri.tdb: 'Prototype Si2Ti (oF24, Fddd)' - Candidate (tdb_comment): Si2Ti · oF24 · Fddd — AlRu-21Liu.tdb: 'Prototype Si2Ti (oF24, Fddd)' - Candidate (tdb_comment): Si2Ti · oF24 · Fddd — AlRu-96Che-LB.tdb: 'Prototype Si2Ti (oF24, Fddd)' - Stability: stable in 3 of 3 calculated diagram(s): 300–2078.42 K, x(Ru) 0.31036–0.33333 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:al2ru-c54) Names (4): _corpus: _corpus:phase:al-ru:al2ru-c54 _tdb: _tdb:AlRu-03Pri.tdb:AL2RU_C54, tdb:AlRu-21Liu.tdb:AL2RU_C54, tdb:AlRu-96Che-LB.tdb:AL2RU_C54 ### TDB models of AL2RU_C54 (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): AL2RU_C54, type code %, sha256 `e4eee0dda908e418…` ~~~~text 77: PHASE AL2RU_C54 % 3 2 1 1 ! 78: CONST AL2RU_C54 : AL : RU : AL RU VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): AL2RU_C54, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 68: PHASE AL2RU_C54 % 2 2 1 ! 69: CONST AL2RU_C54 : AL : RU : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): AL2RU_C54, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 54: PHASE AL2RU_C54 % 2 2 1 ! 55: CONST AL2RU_C54 : AL : RU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## AL3RU2 (Al–Ru) - Id: `phase:al-ru:al3ru2`; status `needs_review` - No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_rows_disagree - Candidate (dft_mp): I4/mmm (139) — on-hull MP Al3Ru2 at x(RU)=0.4000 - Candidate (dft_oqmd): C2/m (12) — on-hull OQMD Al3 Ru2 at x(RU)=0.4000 - Candidate (sgte_mmc2): Al3Os2 · tI10 · I4/mmm (139) — Hallstedt 2025 mmc2 row for AL3RU2: Al3Ru2 (alt. Al3Ni2) - Candidate (sgte_mmc2): Ni2Al3 · D5_13 · hP5 · P-3m1 (164) — Hallstedt 2025 mmc2 row for AL3RU2: Al3Ru2 (alt. Al3Os2) - Candidate (tdb_comment): Al3Os2 · tI10 · I4/mmm — AlRu-03Pri.tdb: 'Prototype Al3Os2 (tI10, I4/mmm)' - Candidate (tdb_comment): Al3Os2 · tI10 · I4/mmm — AlRu-21Liu.tdb: 'Prototype Al3Os2 (tI10, I4/mmm)' - Candidate (tdb_comment): Al3Os2 · tI10 · I4/mmm — AlRu-96Che-LB.tdb: 'Prototype Al3Os2 (tI10, I4/mmm)' - Stability: stable in 3 of 3 calculated diagram(s): 300–1968.42 K, x(Ru) 0.3957–0.4 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:al3ru2) Names (4): _corpus: _corpus:phase:al-ru:al3ru2 _tdb: _tdb:AlRu-03Pri.tdb:AL3RU2, tdb:AlRu-21Liu.tdb:AL3RU2, tdb:AlRu-96Che-LB.tdb:AL3RU2 ### TDB models of AL3RU2 (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): AL3RU2, type code %, sha256 `e4eee0dda908e418…` ~~~~text 83: PHASE AL3RU2 % 3 3 2 1 ! 84: CONST AL3RU2 : AL : AL RU : RU VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): AL3RU2, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 74: PHASE AL3RU2 % 2 3 2 ! 75: CONST AL3RU2 : AL : RU : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): AL3RU2, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 60: PHASE AL3RU2 % 2 3 2 ! 61: CONST AL3RU2 : AL : RU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## AL5RU2 (Al–Ru) - Id: `phase:al-ru:al5ru2`; status `assigned` - Structure: Al5Fe2 · oC24 · Cmcm (63); type `st:al5fe2-oc24`; 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 (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Al 0.7143, Ru 0.2857 - Stability: stable in 1 of 1 calculated diagram(s): 1613.11–1765.05 K, x(Ru) 0.28571–0.28571 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:al5ru2) Names (2): _corpus: _corpus:phase:al-ru:al5ru2 _tdb: _tdb:AlRu-21Liu.tdb:AL5RU2 ### TDB models of AL5RU2 (1): PHASE and CONSTITUENT statements as written [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): AL5RU2, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 62: PHASE AL5RU2 % 2 5 2 ! 63: CONST AL5RU2 : AL : RU : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ ## AL6RU_D2H (Al–Ru) - Id: `phase:al-ru:al6ru-d2h`; status `assigned` - Structure: Al6Mn · D2_h · oC28 · Cmcm (63); type `st:d2-h-al6mn-oc28`; tier A: standard phase name; confidence high - Stoichiometry: Al 0.8571, Ru 0.1429 - Stability: stable in 3 of 3 calculated diagram(s): 300–1007.03 K, x(Ru) 0.14286–0.14286 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:al6ru-d2h) Names (4): _corpus: _corpus:phase:al-ru:al6ru-d2h _tdb: _tdb:AlRu-03Pri.tdb:AL6RU_D2H, tdb:AlRu-21Liu.tdb:AL6RU_D2H, tdb:AlRu-96Che-LB.tdb:AL6RU_D2H ### TDB models of AL6RU_D2H (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): AL6RU_D2H, type code %, sha256 `e4eee0dda908e418…` ~~~~text 66: PHASE AL6RU_D2H % 2 6 1 ! 67: CONST AL6RU_D2H : AL : RU : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): AL6RU_D2H, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 52: PHASE AL6RU_D2H % 2 6 1 ! 53: CONST AL6RU_D2H : AL : RU : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): AL6RU_D2H, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 43: PHASE AL6RU_D2H % 2 6 1 ! 44: CONST AL6RU_D2H : AL : RU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## ALRU_B2 (Al–Ru) - Id: `phase:al-ru:alru-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 300–2342.04 K, x(Ru) 0.46569–0.50654 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:alru-b2) Names (3): _corpus: _corpus:phase:al-ru:alru-b2 _tdb: _tdb:AlRu-03Pri.tdb:ALRU_B2, tdb:AlRu-96Che-LB.tdb:ALRU_B2 ### TDB models of ALRU_B2 (2): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): ALRU_B2, type code %B, sha256 `e4eee0dda908e418…` ~~~~text 88: PHASE ALRU_B2 %B 2 1 1 ! 89: CONST ALRU_B2 : AL RU : AL VA : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): ALRU_B2, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 65: PHASE ALRU_B2 % 2 1 1 ! 66: CONST ALRU_B2 : AL : RU : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## BCC_A2 (Al–Ru) - Id: `phase:al-ru:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; 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:al-ru:bcc-a2) Names (6): _corpus: _corpus:phase:al-ru:bcc-a2 _tdb: _tdb:AlRu-03Pri.tdb:A2_BCC, tdb:AlRu-03Pri.tdb:BCC_A2, tdb:AlRu-21Liu.tdb:A2_BCC, tdb:AlRu-21Liu.tdb:BCC_A2, tdb:AlRu-96Che-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): A2_BCC, type code %B, sha256 `e4eee0dda908e418…` ~~~~text 51: PHASE A2_BCC %B 2 1 3 ! 52: CONST A2_BCC : AL RU : VA : ! ~~~~ [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): BCC_A2, type code %B, sha256 `e4eee0dda908e418…` ~~~~text 46: PHASE BCC_A2 %B 2 1 3 ! 47: CONST BCC_A2 : AL RU : VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): A2_BCC, type code %B, sha256 `cef4b4d880bf3666…` ~~~~text 37: PHASE A2_BCC %B 2 1 3 ! 38: CONST A2_BCC : AL RU VA : VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): BCC_A2, type code %B, sha256 `cef4b4d880bf3666…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : AL RU VA : VA : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): BCC_A2, type code %B, sha256 `1291d11ec1e5da2a…` ~~~~text 33: PHASE BCC_A2 %B 2 1 3 ! 34: CONST BCC_A2 : AL RU : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## B2_BCC (Al–Ru) - Id: `phase:al-ru:bcc-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Caveat: AlRu-03Pri.tdb: ordered phase with disordered part A2_BCC (order/disorder model) - Caveat: AlRu-21Liu.tdb: ordered phase with disordered part A2_BCC (order/disorder model) - Caveat: partitioned order/disorder model in AlRu-03Pri.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlRu-21Liu.tdb also describes the disordered state - Stability: stable in 2 of 2 calculated diagram(s): 300–2391.71 K, x(Ru) 0.42848–0.53955 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:bcc-b2) Names (3): _corpus: _corpus:phase:al-ru:bcc-b2 _tdb: _tdb:AlRu-03Pri.tdb:B2_BCC, tdb:AlRu-21Liu.tdb:B2_BCC ### TDB models of B2_BCC (2): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): B2_BCC, type code %BO, sha256 `e4eee0dda908e418…` ~~~~text 56: PHASE B2_BCC %BO 3 0.5 0.5 3 ! 57: CONST B2_BCC : AL% RU : AL RU% : VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): B2_BCC, type code %BO, sha256 `cef4b4d880bf3666…` ~~~~text 42: PHASE B2_BCC %BO 3 0.5 0.5 3 ! 43: CONST B2_BCC : AL% RU VA : AL RU% VA : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## FCC_A1 (Al–Ru) - Id: `phase:al-ru:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 300–936.73 K, x(Ru) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:fcc-a1) Names (4): _corpus: _corpus:phase:al-ru:fcc-a1 _tdb: _tdb:AlRu-03Pri.tdb:FCC_A1, tdb:AlRu-21Liu.tdb:FCC_A1, tdb:AlRu-96Che-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): FCC_A1, type code %A, sha256 `e4eee0dda908e418…` ~~~~text 41: PHASE FCC_A1 %A 2 1 1 ! 42: CONST FCC_A1 : AL RU : VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): FCC_A1, type code %A, sha256 `cef4b4d880bf3666…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : AL RU : VA : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): FCC_A1, type code %A, sha256 `1291d11ec1e5da2a…` ~~~~text 28: PHASE FCC_A1 %A 2 1 1 ! 29: CONST FCC_A1 : AL RU : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## HCP_A3 (Al–Ru) - Id: `phase:al-ru:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 300–3999.75 K, x(Ru) 0.88228–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:hcp-a3) Names (4): _corpus: _corpus:phase:al-ru:hcp-a3 _tdb: _tdb:AlRu-03Pri.tdb:HCP_A3, tdb:AlRu-21Liu.tdb:HCP_A3, tdb:AlRu-96Che-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): HCP_A3, type code %A, sha256 `e4eee0dda908e418…` ~~~~text 61: PHASE HCP_A3 %A 2 1 0.5 ! 62: CONST HCP_A3 : AL RU : VA : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): HCP_A3, type code %A, sha256 `cef4b4d880bf3666…` ~~~~text 47: PHASE HCP_A3 %A 2 1 0.5 ! 48: CONST HCP_A3 : AL RU : VA : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): HCP_A3, type code %A, sha256 `1291d11ec1e5da2a…` ~~~~text 38: PHASE HCP_A3 %A 2 1 0.5 ! 39: CONST HCP_A3 : AL RU : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _assessment that models this phase_ ## LIQUID (Al–Ru) - Id: `phase:al-ru:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 921.73–4000 K, x(Ru) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ru:liquid) Names (4): _corpus: _corpus:phase:al-ru:liquid _tdb: _tdb:AlRu-03Pri.tdb:LIQUID, tdb:AlRu-21Liu.tdb:LIQUID, tdb:AlRu-96Che-LB.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [AlRu-03Pri.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-03Pri.tdb): LIQUID, type code %, sha256 `e4eee0dda908e418…` ~~~~text 36: PHASE LIQUID:L % 1 1 ! 37: CONST LIQUID:L : AL RU : ! ~~~~ [AlRu-21Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-21Liu.tdb): LIQUID, type code %, sha256 `cef4b4d880bf3666…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : AL RU : ! ~~~~ [AlRu-96Che-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlRu-96Che-LB.tdb): LIQUID, type code %, sha256 `1291d11ec1e5da2a…` ~~~~text 23: PHASE LIQUID:L % 1 1 ! 24: CONST LIQUID:L : AL RU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2020.102239](https://doi.org/10.1016/j.calphad.2020.102239) J. Liu, C. Zhou, H. Wang, Calphad, 72, 102239(2021). _assessment that models this phase_ - [doi:10.1016/S0364-5916(03)00033-6](https://doi.org/10.1016/S0364-5916%2803%2900033-6) S.N. Prins, L.A. Cornish, W.E. Stumpf, B. Sundman, Calphad, 27, 79-90(2003). _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).