# Al–Au system

> Al–Au system: 118 accepted literature values (crystal structure 61, invariant reaction 32, phase transition 10, mixing / partial 9) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/AL-AU.html · Markdown: https://data.orchid-project.org/systems/AL-AU.md

118 accepted literature values from 2 paper(s) (experimental 34, model 29, unspecified 55); 3 calculated phase diagram(s). 9 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/AL-AU.json) · [CSV](https://data.orchid-project.org/systems/AL-AU.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-AU) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#AL-AU/AlAu-04Li.json) · [phases (15)](https://data.orchid-project.org/phases/pages/AL-AU.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-AU.html) · [Markdown](https://data.orchid-project.org/systems/AL-AU.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 34 |
| model | 29 |
| unspecified | 55 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 32 |
| phase transition | 10 |
| formation | 6 |
| mixing / partial | 9 |
| crystal structure | 61 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| AlAu-04Li.tdb | M. Li, C. Li, F. Wang, D. Luo, W. Zhang, J. Alloys Compd., 385, 199-206(2004). [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007) | `14d6262f7039c9ec4f44a94279e7621f8a374d8f398f34748f10e1d409596657` | [viewer](https://orchid-project.org/phase-diagrams/#AL-AU/AlAu-04Li.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Li.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlAu-04Li.json) |
| AlAu-04Liu.tdb | H.S. Liu, J. Wang, Y. Du, Z.P. Jin, Z. Metallkd., 95, 45-49(2004). [doi:10.3139/ijmr-2004-0009](https://doi.org/10.3139/ijmr-2004-0009) | `d847563ac9e3bbad12faa67daf8599031fa1a17493e48066cef0e58150bf135d` | [viewer](https://orchid-project.org/phase-diagrams/#AL-AU/AlAu-04Liu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlAu-04Liu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlAu-04Liu.json) |
| AlAu-87Mur-LB.tdb | J.L. Murray, H. Okamoto, T.B. Massalski, Bull. Alloy Phase Diag., 8, 20-30(1987). [doi:10.1007/BF02868887](https://doi.org/10.1007/BF02868887) | `0ec479200ccaf6a58153cc6c8a78a7cded6591b1a4f7ff0a0f9042c49c289fc1` | [viewer](https://orchid-project.org/phase-diagrams/#AL-AU/AlAu-87Mur-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlAu-87Mur-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlAu-87Mur-LB.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| AlAu-04Li.tdb | 923.07 | FCC_A1 (x(Au) 0.00106) + LIQUID (x(Au) 0.01709) + AL2AU_C1 (x(Au) 0.32909) |
| AlAu-04Li.tdb | 896.6 | AL2AU_C1 (x(Au) 0.33807) + ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.58168) |
| AlAu-04Li.tdb | 852.36 | ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.60647) + ALAU2_C11B (x(Au) 0.65553) |
| AlAu-04Li.tdb | 847.6 | ALAU2_C11B (x(Au) 0.66904) + LIQUID (x(Au) 0.72195) + AL3AU8 (x(Au) 0.72727) |
| AlAu-04Li.tdb | 833.5 | ALAU2_C11B (x(Au) 0.6646) + ALAU2_BETA (x(Au) 0.6654) + ALAU2_ALPHA (x(Au) 0.6658) |
| AlAu-04Li.tdb | 831.27 | ALAU2_ALPHA (x(Au) 0.66663) + ALAU2_C11B (x(Au) 0.6685) + AL3AU8 (x(Au) 0.72727) |
| AlAu-04Li.tdb | 819.53 | ALAU (x(Au) 0.5) + ALAU2_C11B (x(Au) 0.65585) + ALAU2_BETA (x(Au) 0.65976) |
| AlAu-04Li.tdb | 818 | LIQUID (x(Au) 0.79064) + ALAU4_A2 (x(Au) 0.80657) + FCC_A1 (x(Au) 0.84861) |
| AlAu-04Li.tdb | 811.87 | AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.77911) + ALAU4_A2 (x(Au) 0.80364) |
| AlAu-04Li.tdb | 811.87 | AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.77915) + ALAU4_A2 (x(Au) 0.80365) |
| AlAu-04Li.tdb | 783.58 | AL3AU8 (x(Au) 0.72727) + ALAU4_ALPHA (x(Au) 0.8) + ALAU4_A2 (x(Au) 0.80246) |
| AlAu-04Li.tdb | 783.58 | AL3AU8 (x(Au) 0.72727) + ALAU4_ALPHA (x(Au) 0.8) + ALAU4_A2 (x(Au) 0.80244) |
| AlAu-04Li.tdb | 783.58 | AL3AU8 (x(Au) 0.72727) + ALAU4_ALPHA (x(Au) 0.8) + ALAU4_A2 (x(Au) 0.80245) |
| AlAu-04Li.tdb | 772.56 | ALAU4_ALPHA (x(Au) 0.8) + ALAU4_A2 (x(Au) 0.80639) + FCC_A1 (x(Au) 0.85807) |
| AlAu-04Li.tdb | 772.56 | ALAU4_ALPHA (x(Au) 0.8) + ALAU4_A2 (x(Au) 0.80638) + FCC_A1 (x(Au) 0.85813) |
| AlAu-04Liu.tdb | 926.54 | FCC_A1 (x(Au) 0.00208) + LIQUID (x(Au) 0.01331) + AL2AU_C1 (x(Au) 0.33333) |
| AlAu-04Liu.tdb | 926.54 | FCC_A1 (x(Au) 0.00208) + LIQUID (x(Au) 0.01331) + AL2AU_C1 (x(Au) 0.33333) |
| AlAu-04Liu.tdb | 895.18 | AL2AU_C1 (x(Au) 0.33333) + ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.56118) |
| AlAu-04Liu.tdb | 895.17 | AL2AU_C1 (x(Au) 0.33333) + ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.56142) |
| AlAu-04Liu.tdb | 840.39 | ALAU2 (x(Au) 0.66667) + AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.73501) |
| AlAu-04Liu.tdb | 840.39 | ALAU2 (x(Au) 0.66667) + AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.73503) |
| AlAu-04Liu.tdb | 840.39 | ALAU2 (x(Au) 0.66667) + AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.73481) |
| AlAu-04Liu.tdb | 838.87 | ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.59708) + ALAU2 (x(Au) 0.66667) |
| AlAu-04Liu.tdb | 838.87 | ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.59723) + ALAU2 (x(Au) 0.66667) |
| AlAu-04Liu.tdb | 815.16 | LIQUID (x(Au) 0.79473) + BCC_A2 (x(Au) 0.82479) + FCC_A1 (x(Au) 0.87547) |
| AlAu-04Liu.tdb | 807.14 | AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.78435) + BCC_A2 (x(Au) 0.81402) |
| AlAu-04Liu.tdb | 807.14 | AL3AU8 (x(Au) 0.72727) + LIQUID (x(Au) 0.78463) + BCC_A2 (x(Au) 0.8143) |
| AlAu-04Liu.tdb | 786.44 | AL3AU8 (x(Au) 0.72727) + ALAU4 (x(Au) 0.8) + BCC_A2 (x(Au) 0.81574) |
| AlAu-04Liu.tdb | 786.44 | AL3AU8 (x(Au) 0.72727) + ALAU4 (x(Au) 0.8) + BCC_A2 (x(Au) 0.81567) |
| AlAu-04Liu.tdb | 786.44 | AL3AU8 (x(Au) 0.72727) + ALAU4 (x(Au) 0.8) + BCC_A2 (x(Au) 0.81575) |
| AlAu-04Liu.tdb | 759.39 | ALAU4 (x(Au) 0.8) + BCC_A2 (x(Au) 0.83274) + FCC_A1 (x(Au) 0.88749) |
| AlAu-04Liu.tdb | 759.39 | ALAU4 (x(Au) 0.8) + BCC_A2 (x(Au) 0.83278) + FCC_A1 (x(Au) 0.88755) |
| AlAu-87Mur-LB.tdb | 921.19 | FCC_A1 (x(Au) 0.00269) + LIQUID (x(Au) 0.02308) + AL2AU_C1 (x(Au) 0.33333) |
| AlAu-87Mur-LB.tdb | 921.19 | FCC_A1 (x(Au) 0.00267) + LIQUID (x(Au) 0.02292) + AL2AU_C1 (x(Au) 0.33333) |
| AlAu-87Mur-LB.tdb | 860.82 | ALAU2 (x(Au) 0.66667) + AL2AU5 (x(Au) 0.71429) + LIQUID (x(Au) 0.72019) |
| AlAu-87Mur-LB.tdb | 860.82 | ALAU2 (x(Au) 0.66667) + AL2AU5 (x(Au) 0.71429) + LIQUID (x(Au) 0.72033) |
| AlAu-87Mur-LB.tdb | 860.82 | ALAU2 (x(Au) 0.66667) + AL2AU5 (x(Au) 0.71429) + LIQUID (x(Au) 0.72009) |
| AlAu-87Mur-LB.tdb | 853.9 | ALAU (x(Au) 0.5) + LIQUID (x(Au) 0.60222) + ALAU2 (x(Au) 0.66667) |
| AlAu-87Mur-LB.tdb | 824.2 | ALAU4 (x(Au) 0.8) + LIQUID (x(Au) 0.80519) + FCC_A1 (x(Au) 0.84558) |
| AlAu-87Mur-LB.tdb | 824.2 | ALAU4 (x(Au) 0.8) + LIQUID (x(Au) 0.80521) + FCC_A1 (x(Au) 0.84561) |
| AlAu-87Mur-LB.tdb | 810.37 | AL2AU5 (x(Au) 0.71429) + LIQUID (x(Au) 0.78047) + ALAU4 (x(Au) 0.8) |
| AlAu-87Mur-LB.tdb | 810.37 | AL2AU5 (x(Au) 0.71429) + LIQUID (x(Au) 0.7804) + ALAU4 (x(Au) 0.8) |
| AlAu-87Mur-LB.tdb | 751.51 | AL2AU5 (x(Au) 0.71429) + ALAU4 (x(Au) 0.8) + FCC_A1 (x(Au) 0.84382) |
| AlAu-87Mur-LB.tdb | 751.51 | AL2AU5 (x(Au) 0.71429) + ALAU4 (x(Au) 0.8) + FCC_A1 (x(Au) 0.84387) |
| AlAu-87Mur-LB.tdb | 751.51 | AL2AU5 (x(Au) 0.71429) + ALAU4 (x(Au) 0.8) + FCC_A1 (x(Au) 0.84387) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/AL/AL-AU.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/AL/AL-AU.json) · [CALPHAD hull AlAu-04Liu](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-AU--AlAu-04Liu.json) · [CALPHAD hull AlAu-87Mur-LB](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-AU--AlAu-87Mur-LB.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Al–Au system (32)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 923.15 | eutectic: L -> (Al) + Al2Au | L: Au 0.011; (Al): Au 6.000e-4; Al2Au: Au 0.3292 | model | [1] Murray 1987 | Table 1, p. 2, row 1; `ORC-5A5TIM36GL` |  |
| 923 | eutectic: L -> (Al) + (Al2Au) | L: Au 0.011; (Al): Au 6.000e-4; (Al2Au): Au 0.3292 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 1; `ORC-4W7BYKRNV7` |  |
| 923 | eutectic: L -> (Al) + (Al2Au) | L: Au 0.0171; (Al): Au 0.001; (Al2Au): Au 0.3291 | model | [2] Li 2004 | Table 1, p. 2, row 2; `ORC-TJ62KGXDPT` |  |
| 898.15 | peritectic: L + AlAu2 -> AlAu | L: Au 0.565; AlAu2: Au 0.3392; AlAu: Au 0.5 | model | [1] Murray 1987 | Table 1, p. 2, row 2; `ORC-QULCLTDB4G` |  |
| 898 | L + (Al2Au) -> AlAu | L: Au 0.565; (Al2Au): Au 0.3392; AlAu: Au 0.5 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 3; `ORC-BMXMVZQTVR` |  |
| 897 | L + (Al2Au) -> AlAu | L: Au 0.5817; (Al2Au): Au 0.3381; AlAu: Au 0.5 | model | [2] Li 2004 | Table 1, p. 2, row 4; `ORC-DCR7FR2NXD` |  |
| 852 | eutectic: L -> AlAu + γ(AlAu2) | L: Au 0.6065; AlAu: Au 0.5; γ(AlAu2): Au 0.6555 | model | [2] Li 2004 | Table 1, p. 2, row 6; `ORC-TMUQDBIZKM` |  |
| 848.15 | peritectic: L + γAlAu2 -> Al2Au5 | L: Au 0.72; γAlAu2: Au 0.667; Al2Au5: Au 0.7143 | model | [1] Murray 1987 | Table 1, p. 2, row 7; `ORC-HECOMUMVRB` |  |
| 848 | eutectic: L -> γ(AlAu2) + Al3Au8 | L: Au 0.72; γ(AlAu2): Au 0.667; Al3Au8: Au 0.727 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 9; `ORC-PZMMFQ55LX` |  |
| 848 | eutectic: L -> γ(AlAu2) + Al3Au8 | L: Au 0.722; γ(AlAu2): Au 0.669; Al3Au8: Au 0.727 | model | [2] Li 2004 | Table 1, p. 2, row 10; `ORC-UBVMD5GI3Z` |  |
| 844 | eutectic: L -> AlAu + γ(AlAu2) | L: Au 0.6; AlAu: Au 0.5; γ(AlAu2): Au 0.65 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 5; `ORC-NC6U5MTVB2` |  |
| 842.15 | eutectic: L -> AlAu + γAlAu2 | L: Au 0.6; AlAu: Au 0.5; γAlAu2: Au 0.65 | model | [1] Murray 1987 | Table 1, p. 2, row 3; `ORC-WWRUFJEDUK` |  |
| 833.15 | eutectoid: γAlAu2 -> βAlAu2 + AlAu5 | γAlAu2: Au 0.668; βAlAu2: Au 0.667; AlAu5: Au 0.7143 | model | [1] Murray 1987 | Table 1, p. 2, row 6; `ORC-JCPG7LS2V2.ac2330` |  |
| 833.15 | eutectoid: γAlAu2 -> αAlAu2 + βAlAu2 | γAlAu2: Au 0.662; αAlAu2: Au 0.663; βAlAu2: Au 0.661 | model | [1] Murray 1987 | Table 1, p. 2, row 5; `ORC-JCPG7LS2V2.ac2940` |  |
| 833 | γ(AlAu2) + α(AlAu2) -> β(AlAu2) | γ(AlAu2): Au 0.663; α(AlAu2): Au 0.6655; β(AlAu2): Au 0.665 | model | [2] Li 2004 | Table 1, p. 2, row 16; `ORC-HEQPT5JSFS` |  |
| 833 | γ(AlAu2) -> α(AlAu2) + Al3Au8 | γ(AlAu2): Au 0.668; α(AlAu2): Au 0.667; Al3Au8: Au 0.727 | experimental | [2] Li 2004; _cites Puselj 1972_ | Table 1, p. 2, row 17; `ORC-MLWBHHUO2O` |  |
| 833 | γ(AlAu2) + α(AlAu2) -> β(AlAu2) | γ(AlAu2): Au 0.662; α(AlAu2): Au 0.663; β(AlAu2): Au 0.661 | experimental | [2] Li 2004; _cites Puselj 1972_ | Table 1, p. 2, row 15; `ORC-VNKYKBQ6AS` |  |
| 832 | γ(AlAu2) -> α(AlAu2) + Al3Au8 | γ(AlAu2): Au 0.668; α(AlAu2): Au 0.667; Al3Au8: Au 0.727 | model | [2] Li 2004 | Table 1, p. 2, row 18; `ORC-KCXOLLW3FV` |  |
| 820 | γ(AlAu2) -> AlAu + β(AlAu2) | γ(AlAu2): Au 0.656; AlAu: Au 0.5; β(AlAu2): Au 0.659 | model | [2] Li 2004 | Table 1, p. 2, row 14; `ORC-42XQO43NRW` |  |
| 818.15 | eutectoid: γAlAu2 -> AlAu + βAlAu2 | γAlAu2: Au 0.65; AlAu: Au 0.5; βAlAu2: Au 0.651 | model | [1] Murray 1987 | Table 1, p. 2, row 4; `ORC-WRGXSL2VOC.00ae10` |  |
| 818.15 | peritectic: L + (Au) -> β | L: Au 0.8; (Au): Au 0.84; β: Au 0.812 | model | [1] Murray 1987 | Table 1, p. 2, row 12; `ORC-WRGXSL2VOC.1cefc4` |  |
| 818 | L + (Au) -> β(AlAu4) | L: Au 0.8; (Au): Au 0.84; β(AlAu4): Au 0.812 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 11; `ORC-F2XGB5IGYM` |  |
| 818 | γ(AlAu2) -> AlAu + β(AlAu2) | γ(AlAu2): Au 0.65; AlAu: Au 0.5; β(AlAu2): Au 0.651 | experimental | [2] Li 2004; _cites Puselj 1972_ | Table 1, p. 2, row 13; `ORC-VNRAK42UYZ` |  |
| 812 | eutectic: L -> β(AlAu4) + Al3Au8 | L: Au 0.779; β(AlAu4): Au 0.727; Al3Au8: Au 0.804 | model | [2] Li 2004 | Table 1, p. 2, row 8; `ORC-ANXGRGARD5` |  |
| 800 | eutectic: L -> β(AlAu4) + Al3Au8 | L: Au 0.785; β(AlAu4): Au 0.727; Al3Au8: Au 0.8 | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 7; `ORC-IYVLY5ILFC` |  |
| 798.15 | eutectic: L -> Al2Au5 + β | L: Au 0.785; Al2Au5: Au 0.7143; β: Au 0.8 | model | [1] Murray 1987 | Table 1, p. 2, row 8; `ORC-YHVOTYOJR3` |  |
| 784 | Al3Au8 + β(AlAu4) -> AlAu4 | Al3Au8: Au 0.727; β(AlAu4): Au 0.8025; AlAu4: Au 0.8 | model | [2] Li 2004 | Table 1, p. 2, row 20; `ORC-GNUZX72IJY` |  |
| 783.15 | peritectoid: Al2Au5 + β -> AlAu4 | Al2Au5: Au 0.7143; β: Au 0.802; AlAu4: Au 0.8 | model | [1] Murray 1987 | Table 1, p. 2, row 9; `ORC-2BWKZSAYUO` |  |
| 783 | Al3Au8 + β(AlAu4) -> AlAu4 | Al3Au8: Au 0.727; β(AlAu4): Au 0.802; AlAu4: Au 0.8 | experimental | [2] Li 2004; _cites Murry 1987_ [doi](https://doi.org/10.1007/bf02868887) | Table 1, p. 2, row 19; `ORC-JWN36OYV6W` |  |
| 773.15 | eutectoid: β -> AlAu4 + (Au) | β: Au 0.811; AlAu4: Au 0.8; (Au): Au 0.862 | model | [1] Murray 1987 | Table 1, p. 2, row 10; `ORC-F53WJCXZ46` |  |
| 773 | β(AlAu4) -> AlAu4 + (Au) | β(AlAu4): Au 0.806; AlAu4: Au 0.8; (Au): Au 0.858 | model | [2] Li 2004 | Table 1, p. 2, row 22; `ORC-EVOMC7R4L6` |  |
| 773 | β(AlAu4) -> AlAu4 + (Au) | β(AlAu4): Au 0.811; AlAu4: Au 0.8; (Au): Au 0.862 | experimental | [2] Li 2004; _cites Murry 1987_ [doi](https://doi.org/10.1007/bf02868887) | Table 1, p. 2, row 21; `ORC-YPUCHR7RE4` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Al–Au system (6)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Al2Au | [Al2Au](https://data.orchid-project.org/compounds/Al2Au.html) | -41.422 kJ/mol-atom | 298.15 | experimental | -40.818 (mp-aaaaadxv) | -40.918 (oqmd-10384) | [1] Murray 1987; _cites Ferro 1966_ | Table 4, p. 8, row 1; `ORC-4NXX6U7ZZX` |  |
| Al2Au | [Al2Au](https://data.orchid-project.org/compounds/Al2Au.html) | -39.162 kJ/mol-atom | 298.15 | experimental | -40.818 (mp-aaaaadxv) | -40.918 (oqmd-10384) | [1] Murray 1987; _cites Predel 1970_ [doi](https://doi.org/10.1016/0025-5416%2870%2990083-2) | Table 4, p. 8, row 2; `ORC-S3VTYR3XEU` |  |
| AlAu | [AlAu](https://data.orchid-project.org/compounds/AlAu.html) | -36.4 kJ/mol-atom | 298.15 | experimental | -38.163 (mp-aaaaacbv) | -38.17 (oqmd-17555) | [1] Murray 1987; _cites Ferro 1966_ | Table 4, p. 8, row 4; `ORC-IY7ZWTUGAW` |  |
| AlAu | [AlAu](https://data.orchid-project.org/compounds/AlAu.html) | -32.551 kJ/mol-atom | 298.15 | experimental | -38.163 (mp-aaaaacbv) | -38.17 (oqmd-17555) | [1] Murray 1987; _cites Predel 1970_ [doi](https://doi.org/10.1016/0025-5416%2870%2990083-2) | Table 4, p. 8, row 3; `ORC-D5DEW77YPC` |  |
| AlAu2 | [AlAu2](https://data.orchid-project.org/compounds/AlAu2.html) | -35.355 kJ/mol-atom | 298.15 | experimental | -30.551 (mp-aaabgkoc) | -31.366 (oqmd-1783805) | [1] Murray 1987; _cites Ferro 1966_ | Table 4, p. 8, row 5; `ORC-RDZWHGJRR2` |  |
| AlAu2 | [AlAu2](https://data.orchid-project.org/compounds/AlAu2.html) | -27.614 kJ/mol-atom | 298.15 | experimental | -30.551 (mp-aaabgkoc) | -31.366 (oqmd-1783805) | [1] Murray 1987; _cites Predel 1970_ [doi](https://doi.org/10.1016/0025-5416%2870%2990083-2) | Table 4, p. 8, row 6; `ORC-ZYK446NOD4` |  |

## Other properties

### Phase transition (10)

Table: Phase transition, Al–Au system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 838.15 K | 838.15 | congruent transformation: γAlAu2 -> αAlAu2; _γAlAu2: Au 0.665; αAlAu2: Au 0.666667_ | model | [1] Murray 1987 | Table 1, p. 2, row 14; `ORC-NH4XG6DDY7` |  |
| Phase transition | 848.15 K | 848.15 | congruent transformation: γAlAu2 -> βAlAu2; _γAlAu2: Au 0.656; βAlAu2: Au 0.666667_ | model | [1] Murray 1987 | Table 1, p. 2, row 15; `ORC-PKHMXAOFAB` |  |
| Phase transition | 896 K | 896 | L -> γ(AlAu2); _L: Au 0.666; γ(AlAu2): Au 0.666_ | model | [2] Li 2004 | Table 1, p. 2, row 24; `ORC-NHWWTSL6Y7` |  |
| Phase transition | 897 K | 897 | L -> γ(AlAu2); _L: Au 0.66; γ(AlAu2): Au 0.66_ | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 23; `ORC-FWHTADUKNZ` |  |
| Phase transition | 897.15 K | 897.15 | congruent melting: L -> γAlAu2; _L: Au 0.66; γAlAu2: Au 0.666667_ | model | [1] Murray 1987 | Table 1, p. 2, row 13; `ORC-RZ2L4TRQNV` |  |
| Phase transition | 933.6 K | 933.6 | congruent melting: L -> (Al); _(Al): Au 0_ | model | [1] Murray 1987 | Table 1, p. 2, row 17; `ORC-V6QLFV2PP3` |  |
| Phase transition | 1333 K | 1333 | L -> (Al2Au); _L: Au 0.3332; (Al2Au): Au 0.3332_ | model | [2] Li 2004 | Table 1, p. 2, row 26; `ORC-DYGVAANJH2` |  |
| Phase transition | 1333 K | 1333 | L -> (Al2Au); _L: Au 0.333; (Al2Au): Au 0.333_ | experimental | [2] Li 2004; _cites Heycock 1900_ [doi](https://doi.org/10.1098/rsta.1900.0017) | Table 1, p. 2, row 25; `ORC-Z5NHGSEVNF` |  |
| Phase transition | 1333.15 K | 1333.15 | congruent melting: L -> Al2Au; _Al2Au: Au 0.333_ | model | [1] Murray 1987 | Table 1, p. 2, row 16; `ORC-D7SKJBJAJR` |  |
| Phase transition | 1337.58 K | 1337.58 | congruent melting: L -> (Au); _(Au): Au 1_ | model | [1] Murray 1987 | Table 1, p. 2, row 18; `ORC-XWB47BGF2G` |  |

### Mixing / partial (9)

Table: Mixing / partial, Al–Au system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Enthalpy of mixing; _printed: Δmix H(L)_ | -17.794 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 14; `ORC-2M45SF2IUD` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -8.473 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 19; `ORC-CH6GUU6LR4` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -5.854 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 11; `ORC-DDFD5RXTAH` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -14.796 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 18; `ORC-DF7GQPXDTJ` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -18.676 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 17; `ORC-DYAJBRFNT7` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -10.952 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 12; `ORC-JUBE2EL3BG` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -20.209 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 16; `ORC-TNFNZ4SD7F` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -19.186 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 15; `ORC-WYW6PMZTIF` |  |
| Enthalpy of mixing; _printed: Δmix H(L)_ | -15.013 kJ/mol (basis unstated) |  | L | experimental | [1] Murray 1987; _cites Itagaki 1971_ [doi](https://doi.org/10.2320/jinstmet1952.35.4_389) | Table 4, p. 8, row 13; `ORC-XAJQJPOGQR` |  |

### Crystal structure (61)

Table: Crystal structure, Al–Au system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 3.236 Å |  | β; _β: Al 0.2, Au 0.8_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 27; `ORC-QTQSVPNVPV` |  |
| Lattice a | 5.988 Å | 4.2 | Al2Au; _Al2Au: Al 0.667, Au 0.333_ | experimental | [1] Murray 1987; _cites ref. 65Jan_ | Table 3, p. 6, row 43; `ORC-AWAE5IL7KG.2648ba` |  |
| Lattice a | 5.988 Å | 4.2 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 6; `ORC-WPOEPZBFIF` |  |
| Lattice a | 5.9864 Å | 40 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 15; `ORC-FYUR4VWYNC` |  |
| Lattice a | 5.9864 Å | 40 | Al2Au; _Al2Au: Al 0.6667, Au 0.3333_ | experimental | [1] Murray 1987; _cites ref. 72Str_ | Table 3, p. 6, row 47; `ORC-ZKPDT6NMRG.987495` |  |
| Lattice a | 5.9867 Å | 60 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 14; `ORC-KKM7YW6ZTJ` |  |
| Lattice a | 5.9867 Å | 60 | Al2Au; _Al2Au: Al 0.6667, Au 0.3333_ | experimental | [1] Murray 1987; _cites ref. 72Str_ | Table 3, p. 6, row 46; `ORC-TEPLCCW5SB.0f0f09` |  |
| Lattice a | 5.9871 Å | 80 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 13; `ORC-RU3OS7DUGR` |  |
| Lattice a | 5.9876 Å | 100 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 12; `ORC-CQKIRWJ2SF` |  |
| Lattice a | 5.9891 Å | 140 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 11; `ORC-BIBWZ4X5VQ` |  |
| Lattice a | 5.9891 Å | 140 | Al2Au; _Al2Au: Al 0.6667, Au 0.3333_ | experimental | [1] Murray 1987; _cites ref. 72Str_ | Table 3, p. 6, row 45; `ORC-O6IFYMRZI5.a90c95` |  |
| Lattice a | 5.991 Å | 180 | Al2Au; _alloy: Au 0.333333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 10; `ORC-4YRDPLA5VY` |  |
| Lattice a | 5.991 Å | 180 | Al2Au; _Al2Au: Al 0.6667, Au 0.3333_ | experimental | [1] Murray 1987; _cites ref. 72Str_ | Table 3, p. 6, row 44; `ORC-UVBXBLLQ5R.6017c2` |  |
| Lattice a | 4.0737 Å | 298.15 | (Au); _(Au): Al 0.036, Au 0.964_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 33; `ORC-53C4PUGNSP.3df222` |  |
| Lattice a | 4.0724 Å | 298.15 | (Au); _(Au): Al 0.0457, Au 0.9543_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 38; `ORC-BNHYHYNG2C.77de36` |  |
| Lattice a | 4.0624 Å | 298.15 | (Au); _(Au): Al 0.1156, Au 0.8844_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 35; `ORC-COVNAHY44T.15311d` |  |
| Lattice a | 4.0692 Å | 298.15 | (Au); _(Au): Al 0.069, Au 0.931_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 32; `ORC-G23SZGMLVW.193470` |  |
| Lattice a | 4.0762 Å | 298.15 | (Au); _(Au): Al 0.0174, Au 0.9826_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 39; `ORC-JPIPISI5VW.5e2f4c` |  |
| Lattice a | 4.0697 Å | 298.15 | (Au); _(Au): Al 0.0678, Au 0.9322_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 37; `ORC-M4PFQNRKQW.392fae` |  |
| Lattice a | 4.066 Å | 298.15 | (Au); _(Au): Al 0.0911, Au 0.9089_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 36; `ORC-RNPKEZ45M4.a2a80f` |  |
| Lattice a | 4.06 Å | 298.15 | (Au); _(Au): Al 0.131, Au 0.869_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 30; `ORC-SOS4WD4B6R.7b00df` |  |
| Lattice a | 4.0589 Å | 298.15 | (Au); _(Au): Al 0.1402, Au 0.8598_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 34; `ORC-WG2BLRKUV3.42014e` |  |
| Lattice a | 4.0644 Å | 298.15 | (Au); _(Au): Al 0.101, Au 0.899_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 31; `ORC-WWBRHPW4LI.431824` |  |
| Lattice a | 5.98 Å | 298.15 | Al2Au; _Al2Au: Al 0.67, Au 0.33_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 7; `ORC-4ADUUZJ6Y3.3ac080` |  |
| Lattice a | 5.99695 Å | 298.15 | Al2Au; _Al2Au: Al 0.6608, Au 0.3392_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 4; `ORC-GDHQKUZKUE.44d908` |  |
| Lattice a | 5.99797 Å | 298.15 | Al2Au; _Al2Au: Al 0.6708, Au 0.3292_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 2; `ORC-HRTSDI3XS7.81f634` |  |
| Lattice a | 6 Å | 298.15 | Al2Au; _Al2Au: Al 0.67, Au 0.33_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 8; `ORC-LDENDXY4T3.942089` |  |
| Lattice a | 6 Å | 298.15 | Al2Au; _Al2Au: Al 0.667, Au 0.333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 5; `ORC-VIYS7QQEXK.467f38` |  |
| Lattice a | 5.9973 Å | 298.15 | Al2Au; _Al2Au: Al 0.6667, Au 0.3333_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 9; `ORC-XKMXFC7235.9357f8` |  |
| Lattice a | 7.719 Å | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 25; `ORC-EJ6UZHAUVV.13518f` |  |
| Lattice a | 14.68 Å | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 24; `ORC-SUAYGCO47A.068d49` |  |
| Lattice a | 8.75 Å | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 26; `ORC-YA3IBJ3JVA.3d1437` |  |
| Lattice a | 6.415 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 17; `ORC-MZFK57PPBA.33fb54` |  |
| Lattice a | 3.14 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 18; `ORC-SV3E6BGRXO.396d39` |  |
| Lattice a | 6.405 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 16; `ORC-TPHEY3JEFF.239c62` |  |
| Lattice a | 6.916 Å | 298.15 | AlAu4; _AlAu4: Al 0.2, Au 0.8_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 28; `ORC-CCFQRYFBKY.cc02b8` |  |
| Lattice a | 6.9208 Å | 298.15 | AlAu4; _AlAu4: Al 0.2, Au 0.8_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 29; `ORC-E2MA4A4DDX.c2e12e` |  |
| Lattice a | 6.715 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 23; `ORC-2D2QVHROK5.7bf9b1` |  |
| Lattice a | 3.36 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 21; `ORC-7A2UHXFLRV.7544f7` |  |
| Lattice a | 6.755 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 22; `ORC-EAPDKUMMEB.1248c3` |  |
| Lattice a | 3.236 Å | 298.15 | β; _β: Al 0.198, Au 0.802_ | experimental | [1] Murray 1987; _cites ref. 51Kuz_ | Table 3, p. 6, row 48; `ORC-BQX7MSIFTY.13dc46` |  |
| Lattice a | 16.772 Å | 298.15 | βAlAu2; _βAlAu2: Al 0.339, Au 0.661_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 20; `ORC-NCX2NMO3SS.63de62` |  |
| Lattice a | 3.349 Å | 298.15 | γAlAu2; _γAlAu2: Al 0.332, Au 0.668_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 19; `ORC-JPKIQQW7FO.853dc2` |  |
| Lattice b | 3.331 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 17; `ORC-MZFK57PPBA.7e8f33` |  |
| Lattice b | 3.333 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 16; `ORC-TPHEY3JEFF.e4b989` |  |
| Lattice b | 8.815 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 23; `ORC-2D2QVHROK5.8838b3` |  |
| Lattice b | 8.84 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 21; `ORC-7A2UHXFLRV.2836de` |  |
| Lattice b | 8.871 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 22; `ORC-EAPDKUMMEB.28c148` |  |
| Lattice b | 3.219 Å | 298.15 | βAlAu2; _βAlAu2: Al 0.339, Au 0.661_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 20; `ORC-NCX2NMO3SS.950380` |  |
| Lattice c | 41.96 Å | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 25; `ORC-EJ6UZHAUVV.c1a949` |  |
| Lattice c | 42.3 Å | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 26; `ORC-YA3IBJ3JVA.0c028e` |  |
| Lattice c | 6.339 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 17; `ORC-MZFK57PPBA.a297ee` |  |
| Lattice c | 6.327 Å | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 16; `ORC-TPHEY3JEFF.bda2e4` |  |
| Lattice c | 3.219 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 23; `ORC-2D2QVHROK5.8b81bb` |  |
| Lattice c | 3.21 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 21; `ORC-7A2UHXFLRV.1e6322` |  |
| Lattice c | 3.236 Å | 298.15 | αAlAu2; _αAlAu2: Al 0.333, Au 0.667_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 22; `ORC-EAPDKUMMEB.d7c3d6` |  |
| Lattice c | 8.801 Å | 298.15 | βAlAu2; _βAlAu2: Al 0.339, Au 0.661_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 20; `ORC-NCX2NMO3SS.745427` |  |
| Lattice c | 8.893 Å | 298.15 | γAlAu2; _γAlAu2: Al 0.332, Au 0.668_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 19; `ORC-JPKIQQW7FO.093903` |  |
| lattice alpha | 30.5 deg | 298.15 | Al2Au5; _Al2Au5: Al 0.2857, Au 0.7143_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 24; `ORC-SUAYGCO47A.593ee3` |  |
| lattice beta | 93.04 deg | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 17; `ORC-MZFK57PPBA.d7b4e7` |  |
| lattice beta | 92.99 deg | 298.15 | AlAu; _AlAu: Al 0.5, Au 0.5_ | unspecified | [1] Murray 1987 | Table 3, p. 6, row 16; `ORC-TPHEY3JEFF.abbf93` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. J. L. Murray, H. Okamoto, T. B. Massalski, The Al−Au (Aluminum-gold) system, Bulletin of Alloy Phase Diagrams 8, 20-30 (1987). [doi:10.1007/bf02868887](https://doi.org/10.1007/bf02868887)
2. 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). [doi:10.1016/j.jallcom.2004.05.007](https://doi.org/10.1016/j.jallcom.2004.05.007)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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).

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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).