# Al–Au phases > Al–Au system: 15 phases (tier A 6, tier B 1, tier C 5, liquid 1, needs_review 2); 14 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-AU.html · Markdown: https://data.orchid-project.org/phases/pages/AL-AU.md 15 phases (tier A 6, tier B 1, tier C 5, liquid 1, needs_review 2); 14 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-AU) · [full JSON](https://data.orchid-project.org/phases/systems/AL-AU.json) · [Al–Au system page](https://data.orchid-project.org/systems/AL-AU.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-AU.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Au system (15) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AL2AU_C1](#phase-al-au-al2au-c1); _phase:al-au:al2au-c1_ | CaF2 · C1 · cF12 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1341.54 K, x(Au) 0.32908–0.33807 | 28 | 3 | | [AL2AU5](#phase-al-au-al2au5); _phase:al-au:al2au5_ | In3Yb8 · hR44 · R-3c (167) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–860.82 K, x(Au) 0.71429–0.71429 | 11 | 1 | | [AL3AU8](#phase-al-au-al3au8); _phase:al-au:al3au8_ | In3Yb8 · hR44 · R-3c (167) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–847.95 K, x(Au) 0.72727–0.72727 | 11 | 2 | | [ALAU](#phase-al-au-alau); _phase:al-au:alau_ | AlAu · mP8 · P2_1/m (11) | tier B: DFT-supported (unique MP + OQMD match) | stable in 3 of 3 calculated diagram(s): 300–896.6 K, x(Au) 0.5–0.5 | 21 | 3 | | [ALAU2](#phase-al-au-alau2); _phase:al-au:alau2_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–895.83 K, x(Au) 0.66667–0.66667 | 24 | 2 | | [ALAU2_ALPHA](#phase-al-au-alau2-alpha); _phase:al-au:alau2-alpha_ | AlAu2 · oP12 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–835.5 K, x(Au) 0.66578–0.66665 | 6 | 1 | | [ALAU2_BETA](#phase-al-au-alau2-beta); _phase:al-au:alau2-beta_ | AlAu2 · oP30 · Pnnm (58) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–833.5 K, x(Au) 0.65974–0.66541 | 6 | 1 | | [ALAU2_C11B](#phase-al-au-alau2-c11b); _phase:al-au:alau2-c11b_ | MoSi2 · C11_b · tI6 · I4/mmm (139) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 819.53–896.27 K, x(Au) 0.65553–0.66904 | 15 | 1 | | [ALAU4](#phase-al-au-alau4); _phase:al-au:alau4_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–825.26 K, x(Au) 0.8–0.8 | 6 | 2 | | [ALAU4_A2](#phase-al-au-alau4-a2); _phase:al-au:alau4-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 772.56–818 K, x(Au) 0.80244–0.80658 | 11 | 1 | | [ALAU4_ALPHA](#phase-al-au-alau4-alpha); _phase:al-au:alau4-alpha_ | AlAu4 · cP20 · P2_13 (198) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–783.58 K, x(Au) 0.8–0.8 | 6 | 1 | | [BCC_A2](#phase-al-au-bcc-a2); _phase:al-au:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 3 calculated diagram(s): 759.39–815.16 K, x(Au) 0.81402–0.83278 | 0 | 3 | | [FCC_A1](#phase-al-au-fcc-a1); _phase:al-au:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2499.83 K, x(Au) 0–1 | 12 | 3 | | [HCP_A3](#phase-al-au-hcp-a3); _phase:al-au: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-al-au-liquid); _phase:al-au:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 807.14–2500 K, x(Au) 0–1 | 37 | 3 | ## AL2AU_C1 (Al–Au) - Id: `phase:al-au:al2au-c1`; status `assigned` - Structure: CaF2 · C1 · cF12 · Fm-3m (225); type `st:c1-caf2-cf12`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlAu-04Li.tdb also describes the disordered state - Stability: stable in 3 of 3 calculated diagram(s): 300–1341.54 K, x(Au) 0.32908–0.33807 - Literature: 28 values (28 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:al2au-c1) Names (6): _corpus: _corpus:phase:al-au:al2au-c1 _paper: _paper:10.1007/bf02868887:Al2Au, paper:10.1016/j.jallcom.2004.05.007:(Al2Au) _tdb: _tdb:AlAu-04Li.tdb:AL2AU_C1, tdb:AlAu-04Liu.tdb:AL2AU_C1, tdb:AlAu-87Mur-LB.tdb:AL2AU_C1 ### TDB models of AL2AU_C1 (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): AL2AU_C1, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 45: PHASE AL2AU_C1 % 2 2 1 ! 46: CONST AL2AU_C1 : AL% AU : AL AU% : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): AL2AU_C1, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 40: PHASE AL2AU_C1 % 2 2 1 ! 41: CONST AL2AU_C1 : AL : AU : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): AL2AU_C1, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 56: PHASE AL2AU_C1 % 2 2 1 ! 57: CONST AL2AU_C1 : AL : AU : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ - [doi:10.1016/0025-5416(70)90083-2](https://doi.org/10.1016/0025-5416%2870%2990083-2) Bruno Predel, Udo Schallner, Thermodynamische untersuchung der systeme aluminium-antimon und aluminium-gold, Materials Science and Engineering 5, 210-219 (1970). _cited as the source of values for this phase_ ## AL2AU5 (Al–Au) - Id: `phase:al-au:al2au5`; status `assigned` - Structure: In3Yb8 · hR44 · R-3c (167); type `st:in3yb8-hr44`; 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 0.2857, Au 0.7143 - Stability: stable in 1 of 1 calculated diagram(s): 300–860.82 K, x(Au) 0.71429–0.71429 - Literature: 11 values (11 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:al2au5) Names (5): _corpus: _corpus:phase:al-au:al2au5 _paper: _paper:10.1007/bf02868887:Al2Au5, paper:10.1007/bf02868887:AlAu5, paper:10.1007/bf02868887:β _tdb: _tdb:AlAu-87Mur-LB.tdb:AL2AU5 ### TDB models of AL2AU5 (1): PHASE and CONSTITUENT statements as written [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): AL2AU5, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 73: PHASE AL2AU5 % 2 2 5 ! 74: CONST AL2AU5 : AL : AU : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ ## AL3AU8 (Al–Au) - Id: `phase:al-au:al3au8`; status `assigned` - Structure: In3Yb8 · hR44 · R-3c (167); type `st:in3yb8-hr44`; 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_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Al 0.2727, Au 0.7273 - Stability: stable in 2 of 2 calculated diagram(s): 300–847.95 K, x(Au) 0.72727–0.72727 - Literature: 11 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:al3au8) Names (4): _corpus: _corpus:phase:al-au:al3au8 _paper: _paper:10.1016/j.jallcom.2004.05.007:Al3Au8 _tdb: _tdb:AlAu-04Li.tdb:AL3AU8, tdb:AlAu-04Liu.tdb:AL3AU8 ### TDB models of AL3AU8 (2): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): AL3AU8, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 70: PHASE AL3AU8 % 2 3 8 ! 71: CONST AL3AU8 : AL : AU : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): AL3AU8, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 57: PHASE AL3AU8 % 2 3 8 ! 58: CONST AL3AU8 : AL : AU : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ - [doi:10.1007/bf02868887](https://doi.org/10.1007/bf02868887) J. L. Murray, H. Okamoto, T. B. Massalski, The Al−Au (Aluminum-gold) system, Bulletin of Alloy Phase Diagrams 8, 20-30 (1987). _cited as the source of values for this phase_ ## ALAU (Al–Au) - Id: `phase:al-au:alau`; status `assigned` - Structure: AlAu · mP8 · P2_1/m (11); type `st:alau-mp8`; tier B: DFT-supported (unique MP + OQMD match); confidence high - Stoichiometry: Al 0.5000, Au 0.5000 - Stability: stable in 3 of 3 calculated diagram(s): 300–896.6 K, x(Au) 0.5–0.5 - Literature: 21 values (20 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau) Names (8): _corpus: _corpus:phase:al-au:alau _mp: _mp:mp-aaaaacbv _oqmd: _oqmd:oqmd-17555 _paper: _paper:10.1007/bf02868887:AlAu, paper:10.1016/j.jallcom.2004.05.007:AlAu _tdb: _tdb:AlAu-04Li.tdb:ALAU, tdb:AlAu-04Liu.tdb:ALAU, tdb:AlAu-87Mur-LB.tdb:ALAU ### TDB models of ALAU (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 50: PHASE ALAU % 2 1 1 ! 51: CONST ALAU : AL : AU : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): ALAU, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 45: PHASE ALAU % 2 1 1 ! 46: CONST ALAU : AL : AU : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): ALAU, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 61: PHASE ALAU % 2 1 1 ! 62: CONST ALAU : AL : AU : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ - [doi:10.1016/0025-5416(70)90083-2](https://doi.org/10.1016/0025-5416%2870%2990083-2) Bruno Predel, Udo Schallner, Thermodynamische untersuchung der systeme aluminium-antimon und aluminium-gold, Materials Science and Engineering 5, 210-219 (1970). _cited as the source of values for this phase_ ## ALAU2 (Al–Au) - Id: `phase:al-au:alau2`; status `needs_review` - No structure assigned. Why: mp_oqmd_space_groups_differ; no_structure_token; sgte_mmc2_rows_disagree - Candidate (dft_mp): Pnma (62) — on-hull MP AlAu2 at x(AU)=0.6667 - Candidate (dft_oqmd): P21 (4) — on-hull OQMD Al1 Au2 at x(AU)=0.6667 - Candidate (literature_printed): AlAu2 · oP30 — printed with a label mapped to this phase - Candidate (sgte_mmc2): AlAu2 · oP12 · Pnma (62) — Hallstedt 2025 mmc2 row for ALAU2: AlAu2 (alpha-AlAu2, Au-rich) - Candidate (sgte_mmc2): AlAu2 · oP30 · Pnnm (58) — Hallstedt 2025 mmc2 row for ALAU2: AlAu2 (beta-AlAu2, Au-poor) - Candidate (sgte_mmc2): MoSi2 · C11_b · tI6 · I4/mmm (139) — Hallstedt 2025 mmc2 row for ALAU2: AlAu2 (gamma-AlAu2, high T)) - Candidate (tdb_comment): AlAu2 · oP12 · Pnma — AlAu-04Liu.tdb: 'Prototype AlAu2 (oP12, Pnma), alpha-AlAu2 (Au-rich)' - Candidate (tdb_comment): AlAu2 · oP30 · Pnnm — AlAu-04Liu.tdb: 'Prototype AlAu2 (oP30, Pnnm), beta-AlAu2 (Au-poor)' - Stoichiometry: Al 0.3333, Au 0.6667 - Stability: stable in 2 of 2 calculated diagram(s): 300–895.83 K, x(Au) 0.66667–0.66667 - Literature: 24 values (24 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau2) Names (7): _corpus: _corpus:phase:al-au:alau2 _paper: _paper:10.1007/bf02868887:AlAu2, paper:10.1007/bf02868887:αAlAu2, paper:10.1007/bf02868887:βAlAu2, paper:10.1007/bf02868887:γAlAu2 _tdb: _tdb:AlAu-04Liu.tdb:ALAU2, tdb:AlAu-87Mur-LB.tdb:ALAU2 ### TDB models of ALAU2 (2): PHASE and CONSTITUENT statements as written [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): ALAU2, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 52: PHASE ALAU2 % 2 1 2 ! 53: CONST ALAU2 : AL : AU : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): ALAU2, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 68: PHASE ALAU2 % 2 1 2 ! 69: CONST ALAU2 : AL : AU : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1016/0025-5416(70)90083-2](https://doi.org/10.1016/0025-5416%2870%2990083-2) Bruno Predel, Udo Schallner, Thermodynamische untersuchung der systeme aluminium-antimon und aluminium-gold, Materials Science and Engineering 5, 210-219 (1970). _cited as the source of values for this phase_ ## ALAU2_ALPHA (Al–Au) - Id: `phase:al-au:alau2-alpha`; status `assigned` - Structure: AlAu2 · oP12 · Pnma (62); type `st:alau2-op12`; 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 1 of 1 calculated diagram(s): 300–835.5 K, x(Au) 0.66578–0.66665 - Literature: 6 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau2-alpha) Names (3): _corpus: _corpus:phase:al-au:alau2-alpha _paper: _paper:10.1016/j.jallcom.2004.05.007:α(AlAu2) _tdb: _tdb:AlAu-04Li.tdb:ALAU2_ALPHA ### TDB models of ALAU2_ALPHA (1): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU2_ALPHA, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 55: PHASE ALAU2_ALPHA % 2 1 2 ! 56: CONST ALAU2_ALPHA : AL : AL AU% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ ## ALAU2_BETA (Al–Au) - Id: `phase:al-au:alau2-beta`; status `assigned` - Structure: AlAu2 · oP30 · Pnnm (58); type `st:alau2-op30`; 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 1 of 1 calculated diagram(s): 300–833.5 K, x(Au) 0.65974–0.66541 - Literature: 6 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau2-beta) Names (3): _corpus: _corpus:phase:al-au:alau2-beta _paper: _paper:10.1016/j.jallcom.2004.05.007:β(AlAu2) _tdb: _tdb:AlAu-04Li.tdb:ALAU2_BETA ### TDB models of ALAU2_BETA (1): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU2_BETA, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 60: PHASE ALAU2_BETA % 2 1 2 ! 61: CONST ALAU2_BETA : AL : AL AU% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ ## ALAU2_C11B (Al–Au) - Id: `phase:al-au:alau2-c11b`; status `assigned` - Structure: MoSi2 · C11_b · tI6 · I4/mmm (139); type `st:c11-b-mosi2-ti6`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlAu-04Li.tdb also describes the disordered state - Stability: stable in 1 of 1 calculated diagram(s): 819.53–896.27 K, x(Au) 0.65553–0.66904 - Literature: 15 values (12 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau2-c11b) Names (3): _corpus: _corpus:phase:al-au:alau2-c11b _paper: _paper:10.1016/j.jallcom.2004.05.007:γ(AlAu2) _tdb: _tdb:AlAu-04Li.tdb:ALAU2_C11B ### TDB models of ALAU2_C11B (1): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU2_C11B, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 65: PHASE ALAU2_C11B % 2 1 2 ! 66: CONST ALAU2_C11B : AL% AU : AL AU% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ ## ALAU4 (Al–Au) - Id: `phase:al-au:alau4`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_rows_disagree - Candidate (dft_mp): P2_13 (198) — on-hull MP AlAu4 at x(AU)=0.8000 - Candidate (dft_oqmd): P213 (198) — on-hull OQMD Al1 Au4 at x(AU)=0.8000 - Candidate (literature_printed): AlAu4 · cP20 — printed with a label mapped to this phase - Candidate (sgte_mmc2): W · A2 · cI2 · Im-3m (229) — Hallstedt 2025 mmc2 row for ALAU4: AlAu4 (high T) - Candidate (sgte_mmc2): AlAu4 · cP20 · P2_13 (198) — Hallstedt 2025 mmc2 row for ALAU4: AlAu4 (low T) - Candidate (tdb_comment): AlAu4 · cP20 · P2_13 — AlAu-04Liu.tdb: 'Prototype AlAu4 (cP20, P2_13), low T' - Candidate (tdb_comment): AlAu4 · cP20 · P2_13 — AlAu-87Mur-LB.tdb: 'Prototype AlAu4 (cP20, P2_13), low T' - Candidate (tdb_comment): W · cI2 · Im-3m — AlAu-87Mur-LB.tdb: 'Prototype W (cI2, Im-3m), high T' - Stoichiometry: Al 0.2000, Au 0.8000 - Stability: stable in 2 of 2 calculated diagram(s): 300–825.26 K, x(Au) 0.8–0.8 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau4) Names (5): _corpus: _corpus:phase:al-au:alau4 _paper: _paper:10.1007/bf02868887:AlAu4, paper:10.1007/bf02868887:β _tdb: _tdb:AlAu-04Liu.tdb:ALAU4, tdb:AlAu-87Mur-LB.tdb:ALAU4 ### TDB models of ALAU4 (2): PHASE and CONSTITUENT statements as written [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): ALAU4, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 62: PHASE ALAU4 % 2 1 4 ! 63: CONST ALAU4 : AL : AU : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): ALAU4, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 79: PHASE ALAU4 % 2 1 4 ! 80: CONST ALAU4 : AL : AU : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ ## ALAU4_A2 (Al–Au) - Id: `phase:al-au:alau4-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 1 of 1 calculated diagram(s): 772.56–818 K, x(Au) 0.80244–0.80658 - Literature: 11 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau4-a2) Names (3): _corpus: _corpus:phase:al-au:alau4-a2 _paper: _paper:10.1016/j.jallcom.2004.05.007:β(AlAu4) _tdb: _tdb:AlAu-04Li.tdb:ALAU4_A2 ### TDB models of ALAU4_A2 (1): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU4_A2, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 80: PHASE ALAU4_A2 % 2 1 4 ! 81: CONST ALAU4_A2 : AL% AU : AU : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ - [doi:10.1007/bf02868887](https://doi.org/10.1007/bf02868887) J. L. Murray, H. Okamoto, T. B. Massalski, The Al−Au (Aluminum-gold) system, Bulletin of Alloy Phase Diagrams 8, 20-30 (1987). _cited as the source of values for this phase_ ## ALAU4_ALPHA (Al–Au) - Id: `phase:al-au:alau4-alpha`; status `assigned` - Structure: AlAu4 · cP20 · P2_13 (198); type `st:alau4-cp20`; 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, 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: Al 0.2000, Au 0.8000 - Stability: stable in 1 of 1 calculated diagram(s): 300–783.58 K, x(Au) 0.8–0.8 - Literature: 6 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:alau4-alpha) Names (3): _corpus: _corpus:phase:al-au:alau4-alpha _paper: _paper:10.1016/j.jallcom.2004.05.007:AlAu4 _tdb: _tdb:AlAu-04Li.tdb:ALAU4_ALPHA ### TDB models of ALAU4_ALPHA (1): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): ALAU4_ALPHA, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 75: PHASE ALAU4_ALPHA % 2 1 4 ! 76: CONST ALAU4_ALPHA : AL : AU : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/bf02868887](https://doi.org/10.1007/bf02868887) J. L. Murray, H. Okamoto, T. B. Massalski, The Al−Au (Aluminum-gold) system, Bulletin of Alloy Phase Diagrams 8, 20-30 (1987). _cited as the source of values for this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ ## BCC_A2 (Al–Au) - Id: `phase:al-au: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 1 of 3 calculated diagram(s): 759.39–815.16 K, x(Au) 0.81402–0.83278 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:bcc-a2) Names (4): _corpus: _corpus:phase:al-au:bcc-a2 _tdb: _tdb:AlAu-04Li.tdb:BCC_A2, tdb:AlAu-04Liu.tdb:BCC_A2, tdb:AlAu-87Mur-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): BCC_A2, type code %B, sha256 `14d6262f7039c9ec…` ~~~~text 35: PHASE BCC_A2 %B 2 1 3 ! 36: CONST BCC_A2 : AL AU : VA : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): BCC_A2, type code %B, sha256 `d847563ac9e3bbad…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : AL AU : VA : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): BCC_A2, type code %B, sha256 `0ec479200ccaf6a5…` ~~~~text 46: PHASE BCC_A2 %B 2 1 3 ! 47: CONST BCC_A2 : AL AU : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ ## FCC_A1 (Al–Au) - Id: `phase:al-au: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): 300–2499.83 K, x(Au) 0–1 - Literature: 12 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:fcc-a1) Names (8): _corpus: _corpus:phase:al-au:fcc-a1 _paper: _paper:10.1007/bf02868887:(Al), paper:10.1007/bf02868887:(Au), paper:10.1016/j.jallcom.2004.05.007:(Al), paper:10.1016/j.jallcom.2004.05.007:(Au) _tdb: _tdb:AlAu-04Li.tdb:FCC_A1, tdb:AlAu-04Liu.tdb:FCC_A1, tdb:AlAu-87Mur-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): FCC_A1, type code %A, sha256 `14d6262f7039c9ec…` ~~~~text 30: PHASE FCC_A1 %A 2 1 1 ! 31: CONST FCC_A1 : AL% AU% : VA : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): FCC_A1, type code %A, sha256 `d847563ac9e3bbad…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : AL% AU% : VA : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): FCC_A1, type code %A, sha256 `0ec479200ccaf6a5…` ~~~~text 41: PHASE FCC_A1 %A 2 1 1 ! 42: CONST FCC_A1 : AL% AU% : VA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ ## HCP_A3 (Al–Au) - Id: `phase:al-au: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:al-au:hcp-a3) Names (4): _corpus: _corpus:phase:al-au:hcp-a3 _tdb: _tdb:AlAu-04Li.tdb:HCP_A3, tdb:AlAu-04Liu.tdb:HCP_A3, tdb:AlAu-87Mur-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): HCP_A3, type code %A, sha256 `14d6262f7039c9ec…` ~~~~text 40: PHASE HCP_A3 %A 2 1 0.5 ! 41: CONST HCP_A3 : AL AU : VA : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): HCP_A3, type code %A, sha256 `d847563ac9e3bbad…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : AL AU : VA : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): HCP_A3, type code %A, sha256 `0ec479200ccaf6a5…` ~~~~text 51: PHASE HCP_A3 %A 2 1 0.5 ! 52: CONST HCP_A3 : AL AU : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ ## LIQUID (Al–Au) - Id: `phase:al-au:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 807.14–2500 K, x(Au) 0–1 - Literature: 37 values (35 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-au:liquid) Names (7): _corpus: _corpus:phase:al-au:liquid _paper: _paper:10.1007/bf02868887:L, paper:10.1007/bf02868887:β, paper:10.1016/j.jallcom.2004.05.007:L _tdb: _tdb:AlAu-04Li.tdb:LIQUID, tdb:AlAu-04Liu.tdb:LIQUID, tdb:AlAu-87Mur-LB.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [AlAu-04Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb): LIQUID, type code %, sha256 `14d6262f7039c9ec…` ~~~~text 25: PHASE LIQUID:L % 1 1 ! 26: CONST LIQUID:L : AL AU : ! ~~~~ [AlAu-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb): LIQUID, type code %, sha256 `d847563ac9e3bbad…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : AL AU : ! ~~~~ [AlAu-87Mur-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb): LIQUID, type code %, sha256 `0ec479200ccaf6a5…` ~~~~text 36: PHASE LIQUID:L % 1 1 ! 37: CONST LIQUID:L : AL AU : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) Mei Li, Changrong Li, Fuming Wang, Degui Luo, Weijing Zhang, Thermodynamic assessment of the Al–Au system, Journal of Alloys and Compounds 385, 199-206 (2004). _assessment that models this phase; reports values for this phase_ - [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). _assessment that models this phase_ - [doi:10.1098/rsta.1900.0017](https://doi.org/10.1098/rsta.1900.0017) Charles Thomas Heycock, Francis Henry Neville, V. Gold-aluminium alloys, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 194, 201-232 (1900). _cited as the source of values for this phase_ - [doi:10.2320/jinstmet1952.35.4_389](https://doi.org/10.2320/jinstmet1952.35.4_389) Kimio Itagaki, Akira Yazawa, Measurements of Heats of Mixing in Liquid Gold Binary Alloys, J.Japan Inst.Metals 35, 389-394 (1971). _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). 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).