# Al–B system

> Al–B system: 36 accepted literature values (invariant reaction 24, formation 10, other property 2) and 5 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

36 accepted literature values from 3 paper(s) (experimental 7, model 29); 5 calculated phase diagram(s). 12 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-B.json) · [CSV](https://data.orchid-project.org/systems/AL-B.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-B) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#AL-B/AlB-01Luk-LB.json) · [phases (9)](https://data.orchid-project.org/phases/pages/AL-B.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-B.html) · [Markdown](https://data.orchid-project.org/systems/AL-B.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 7 |
| model | 29 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 24 |
| formation | 10 |
| other property | 2 |

## 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 |
|---|---|---|---|
| AlB-01Luk-LB.tdb | H.L. Lukas, unpublished, 2001. | `642c909d17cc2a6bd403bc755976f6d6215565678cdf48ebb4782d6feeb71436` | [viewer](https://orchid-project.org/phase-diagrams/#AL-B/AlB-01Luk-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlB-01Luk-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlB-01Luk-LB.json) |
| AlB-04Mir.tdb | D. Mirkovic, J. Grobner, R. Schmid-Fetzer, O. Fabrichnaya, H.L. Lukas, J. Alloys Compd., 384, 168-74(2004). [doi:10.1016/j.jallcom.2004.04.100](https://doi.org/10.1016/j.jallcom.2004.04.100) | `47801a2129a7f1f254ec0643ae185581121ece7d640b9ed1a23d7ea8d2e46348` | [viewer](https://orchid-project.org/phase-diagrams/#AL-B/AlB-04Mir.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlB-04Mir.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlB-04Mir.json) |
| AlB-15Wan.tdb | W. Wang, Z. Fu, T. Liu, W. Zhang, Calphad, 51, 24-34(2015). [doi:10.1016/j.calphad.2015.07.001](https://doi.org/10.1016/j.calphad.2015.07.001) | `45a52a0572a39025f4b50dd3b6a3d6716533cd41e7220e2f72e077b344a54358` | [viewer](https://orchid-project.org/phase-diagrams/#AL-B/AlB-15Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlB-15Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlB-15Wan.json) |
| AlB-98Luk.tdb | H.L. Lukas, COST 507, Final report round 2, 1998. | `564969ba25933e9fde6808575bb17062351414b3df6eaaa9ae70485bd4f278af` | [viewer](https://orchid-project.org/phase-diagrams/#AL-B/AlB-98Luk.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlB-98Luk.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlB-98Luk.json) |
| AlB-99Cam.tdb | C.E. Campbell, U.R. Kattner, J. Phase Equilib., 20, 485-96(1999). [doi:10.1361/105497199770340743](https://doi.org/10.1361/105497199770340743) | `4d78ca2cbf5a40960c80f7c5f391436a9dcb84eb31043f50d80d526478484e73` | [viewer](https://orchid-project.org/phase-diagrams/#AL-B/AlB-99Cam.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlB-99Cam.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlB-99Cam.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| AlB-01Luk-LB.tdb | 2320.34 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97485) + BETA_RHOMBO_B (x(B) 1) |
| AlB-01Luk-LB.tdb | 2320.34 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97514) + BETA_RHOMBO_B (x(B) 1) |
| AlB-01Luk-LB.tdb | 2320.33 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97502) + BETA_RHOMBO_B (x(B) 1) |
| AlB-01Luk-LB.tdb | 1303.12 | LIQUID (x(B) 0.01724) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-01Luk-LB.tdb | 1303.12 | LIQUID (x(B) 0.01726) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-01Luk-LB.tdb | 934.81 | LIQUID (x(B) 6.200e-4) + FCC_A1 (x(B) 0.00258) + ALB2_C32 (x(B) 0.66667) |
| AlB-04Mir.tdb | 2320.34 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97485) + BETA_RHOMBO_B (x(B) 1) |
| AlB-04Mir.tdb | 2320.34 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97504) + BETA_RHOMBO_B (x(B) 1) |
| AlB-04Mir.tdb | 2320.33 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97502) + BETA_RHOMBO_B (x(B) 1) |
| AlB-04Mir.tdb | 1245.74 | LIQUID (x(B) 0.012) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-04Mir.tdb | 933 | FCC_A1 (x(B) 5.000e-5) + LIQUID (x(B) 7.600e-4) + ALB2_C32 (x(B) 0.66667) |
| AlB-04Mir.tdb | 486.65 | FCC_A1 (x(B) 0) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-15Wan.tdb | 2319.88 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97451) + BETA_RHOMBO_B (x(B) 1) |
| AlB-15Wan.tdb | 2319.88 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.97467) + BETA_RHOMBO_B (x(B) 1) |
| AlB-15Wan.tdb | 2319.88 | ALB12_ALPHA (x(B) 0.92308) + LIQUID (x(B) 0.9747) + BETA_RHOMBO_B (x(B) 1) |
| AlB-15Wan.tdb | 1244.98 | LIQUID (x(B) 0.01293) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-15Wan.tdb | 1244.98 | LIQUID (x(B) 0.01292) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-15Wan.tdb | 932.97 | FCC_A1 (x(B) 1.200e-4) + LIQUID (x(B) 8.600e-4) + ALB2_C32 (x(B) 0.66667) |
| AlB-15Wan.tdb | 486.87 | FCC_A1 (x(B) 0) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-98Luk.tdb | 2335.95 | ALB12_BETA (x(B) 0.92308) + LIQUID (x(B) 0.98811) + BETA_RHOMBO_B (x(B) 1) |
| AlB-98Luk.tdb | 2335.95 | ALB12_BETA (x(B) 0.92308) + LIQUID (x(B) 0.98816) + BETA_RHOMBO_B (x(B) 1) |
| AlB-98Luk.tdb | 1826.25 | ALB12_BETA (x(B) 0.92308) + ALB12_ALPHA (x(B) 0.92308) + BETA_RHOMBO_B (x(B) 1) |
| AlB-98Luk.tdb | 1826.25 | LIQUID (x(B) 0.48243) + ALB12_ALPHA (x(B) 0.92308) + ALB12_BETA (x(B) 0.92308) |
| AlB-98Luk.tdb | 1245.85 | LIQUID (x(B) 0.01861) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-98Luk.tdb | 1245.85 | LIQUID (x(B) 0.01863) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-98Luk.tdb | 935.04 | LIQUID (x(B) 7.300e-4) + FCC_A1 (x(B) 0.0031) + ALB2_C32 (x(B) 0.66667) |
| AlB-98Luk.tdb | 935.04 | LIQUID (x(B) 7.200e-4) + FCC_A1 (x(B) 0.00304) + ALB2_C32 (x(B) 0.66667) |
| AlB-99Cam.tdb | 2251.23 | LIQUID (x(B) 0.89811) + ALB12_ALPHA (x(B) 0.92308) + BETA_RHOMBO_B (x(B) 0.97485) |
| AlB-99Cam.tdb | 2251.23 | LIQUID (x(B) 0.89834) + ALB12_ALPHA (x(B) 0.92308) + BETA_RHOMBO_B (x(B) 0.97492) |
| AlB-99Cam.tdb | 1302.28 | LIQUID (x(B) 0.02519) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-99Cam.tdb | 1302.28 | LIQUID (x(B) 0.02519) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-99Cam.tdb | 1302.28 | LIQUID (x(B) 0.0252) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-99Cam.tdb | 1302.28 | LIQUID (x(B) 0.02523) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |
| AlB-99Cam.tdb | 932.64 | FCC_A1 (x(B) 4.000e-5) + LIQUID (x(B) 0.00129) + ALB2_C32 (x(B) 0.66667) |
| AlB-99Cam.tdb | 932.64 | FCC_A1 (x(B) 4.000e-5) + LIQUID (x(B) 0.00129) + ALB2_C32 (x(B) 0.66667) |
| AlB-99Cam.tdb | 775.32 | FCC_A1 (x(B) 0) + AL2B3 (x(B) 0.6) + ALB2_C32 (x(B) 0.66667) |
| AlB-99Cam.tdb | 764.56 | AL2B3 (x(B) 0.6) + ALB2_C32 (x(B) 0.66667) + ALB12_ALPHA (x(B) 0.92308) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/AL/AL-B.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/AL/AL-B.json) · [CALPHAD hull AlB-01Luk-LB](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-B--AlB-01Luk-LB.json) · [CALPHAD hull AlB-04Mir](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-B--AlB-04Mir.json) · [CALPHAD hull AlB-98Luk](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-B--AlB-98Luk.json) · [CALPHAD hull AlB-99Cam](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-B--AlB-99Cam.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Al–B system (24)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2448 | congruent melting: AlB12-H -> Liquid |  | model | [1] (ed.) 1998 | Table I, p. 33, row 5; `ORC-SCJNVA3KGS` |  |
| 2367.15 | congruent melting: Liquid -> AlB12 | Liquid: B 0.923; AlB12: B 0.923 | model | [2] Mirković 2004 | Table 3, p. 5, row 1; `ORC-DJRNOJJFI2` |  |
| 2336 | eutectic: Liquid -> AlB12-H + β-rhombo-B |  | model | [1] (ed.) 1998 | Table I, p. 33, row 4; `ORC-65V6QGRB5N` |  |
| 2323.15 | peritectic: AlB12 ↔ β + L | AlB12: B 0.923; β: B 0.97 | experimental | [3] Campbell 1999; _cites Duschanek 1995_ [doi](https://doi.org/10.1007/bf02649415) | Table 3, p. 3, row 12; `ORC-TPY5NR2SC3` |  |
| 2320.15 | eutectic: Liquid -> AlB12 + β-B | Liquid: B 0.975; AlB12: B 0.923; β-B: B 1 | model | [2] Mirković 2004 | Table 3, p. 5, row 2; `ORC-N3NG7GESC4` |  |
| 2251.15 | peritectic: AlB12 ↔ β + L | AlB12: B 0.923; β: B 0.975; L: B 0.898 | model | [3] Campbell 1999 | Table 3, p. 3, row 13; `ORC-I2473QPVSH` |  |
| 1826.2 | polymorphic: AlB12-L -> AlB12-H | AlB12-L: Al 0.076923, B 0.923077; AlB12-H: Al 0.076923, B 0.923077 | model | [1] (ed.) 1998 | Table I, p. 33, row 3; `ORC-TGBRG7XZSZ` |  |
| 1303.15 | peritectic: AlB2 ↔ AlB12 + L | AlB2: B 0.667; AlB12: B 0.923; L: B 0.006 | experimental | [3] Campbell 1999; _cites Sigworth 1984_ [doi](https://doi.org/10.1007/bf02645112) | Table 3, p. 3, row 9; `ORC-XDHOSJMSRL` |  |
| 1302.15 | peritectic: AlB2 ↔ AlB12 + L | AlB2: B 0.667; AlB12: B 0.923; L: B 0.025 | model | [3] Campbell 1999 | Table 3, p. 3, row 11; `ORC-PJY2JJCA6J` |  |
| 1251.15 | peritectic: AlB2 ↔ AlB12 + L | AlB2: B 0.667; AlB12: B 0.923; L: B 0.02 | model | [3] Campbell 1999; _cites Batzner 1994_ | Table 3, p. 3, row 10; `ORC-MHIYSY4FK7` |  |
| 1245.8 | peritectic: Liquid + AlB12-L -> AlB2 | AlB12-L: Al 0.076923, B 0.923077; AlB2: Al 0.333333, B 0.666667 | model | [1] (ed.) 1998 | Table I, p. 33, row 2; `ORC-TYRMQLWPZL` |  |
| 1245.15 | peritectic: Liquid + AlB12 -> AlB2 | Liquid: B 0.012; AlB12: B 0.923; AlB2: B 0.667 | model | [2] Mirković 2004 | Table 3, p. 5, row 3; `ORC-4FJBN3UAEJ` |  |
| 935 | peritectic: Liquid + AlB2 -> fcc-Al | AlB2: Al 0.333333, B 0.666667 | model | [1] (ed.) 1998 | Table I, p. 33, row 1; `ORC-QST7DEPBHJ` |  |
| 933.602 | congruent melting: L ↔ Al | L: B 0; Al: B 0 | experimental | [3] Campbell 1999; _cites Carlson 1990_ [doi](https://doi.org/10.1007/bf02841717) | Table 3, p. 3, row 1; `ORC-YOQKVK3ZEG` |  |
| 933.47 | congruent melting: L ↔ Al | L: B 0; Al: B 0 | model | [3] Campbell 1999; _cites Dinsdale 1991_ [doi](https://doi.org/10.1016/0364-5916%2891%2990030-n) | Table 3, p. 3, row 2; `ORC-HQMBFHFPLY` |  |
| 933.25 | eutectic: Al + AlB2 ↔ L | Al: B 6.300e-4; AlB2: B 0.667; L: B 3.500e-4 | model | [3] Campbell 1999; _cites Batzner 1994_ | Table 3, p. 3, row 7; `ORC-4JQQEQKSG6` |  |
| 932.99 | eutectic: Liquid -> AlB2 + fcc | Liquid: B 7.600e-4; AlB2: B 0.667; fcc: B 5.400e-5 | model | [2] Mirković 2004 | Table 3, p. 5, row 4; `ORC-7NAYZA4T3E` |  |
| 932.99 | eutectic: L ↔ (Al) + AlB2 |  | model | [2] Mirković 2004 | p. 6; `ORC-OCAGTAI3CM` | “The Al-rich eutectic reaction L ↔ (Al) + AlB2 is calculated at 659.84 ◦ C with 0.076 at.% B in Liquid and 0.005 at.% B in (Al).” |
| 932.93 | eutectic: L ↔ (Al) + AlB12 |  | model | [2] Mirković 2004 | p. 6; `ORC-JRV6JM2LBP` | “The metastable eutectic reaction L ↔ (Al) + AlB12 is calculated 0.06 K lower, at 659.78 ◦ C with similar compositions.” |
| 932.85 | eutectic: Al + AlB2 ↔ L | Al: B 4.500e-5; AlB2: B 0.667; L: B 5.500e-4 | experimental | [3] Campbell 1999; _cites Sigworth 1984_ [doi](https://doi.org/10.1007/bf02645112) | Table 3, p. 3, row 6; `ORC-GSN22RC2KV` |  |
| 932.63 | eutectic: Al + AlB2 ↔ L | Al: B 4.400e-5; AlB2: B 0.667; L: B 0.0013 | model | [3] Campbell 1999 | Table 3, p. 3, row 8; `ORC-CQVFLLMPKA` |  |
| 798.15 | peritectoid: Al + AlB2 ↔ Al2B3 | Al: B 4.000e-5; AlB2: B 0.667; Al2B3: B 0.6 | experimental | [3] Campbell 1999; _cites Vardiman 1992_ [doi](https://doi.org/10.1016/0956-7151%2892%2990080-x) | Table 3, p. 3, row 3; `ORC-A7HDFU7DJT` |  |
| 798.15 | peritectoid: Al + AlB2 ↔ Al2B3 | Al: B 4.300e-5; AlB2: B 0.667; Al2B3: B 0.6 | model | [3] Campbell 1999; _cites Batzner 1994_ | Table 3, p. 3, row 4; `ORC-T7R5V27OHM` |  |
| 775.45 | peritectoid: Al + AlB2 ↔ Al2B3 | Al: B 4.700e-5; AlB2: B 0.667; Al2B3: B 0.6 | model | [3] Campbell 1999 | Table 3, p. 3, row 5; `ORC-7VPVTILP3N` |  |

## 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–B system (10)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| AlB12 | [AlB12](https://data.orchid-project.org/compounds/AlB12.html) | -27.8 kJ/mol-atom | 298.15 | model |  | 16.476 (oqmd-1437941) | [3] Campbell 1999 | Table 7, p. 7, row 5; `ORC-OFWRUQIJOX.29484e` |  |
| AlB12 | [AlB12](https://data.orchid-project.org/compounds/AlB12.html) | -20.469 kJ/mol-atom | 298.15 | model |  | 16.476 (oqmd-1437941) | [3] Campbell 1999; _cites Barin 1989_ | Table 7, p. 7, row 3; `ORC-VX6XF7LNLH.63d8b3` |  |
| AlB12 | [AlB12](https://data.orchid-project.org/compounds/AlB12.html) | -15.45 kJ/mol-atom ± 3.2 | 298.15 | experimental |  | 16.476 (oqmd-1437941) | [3] Campbell 1999; _cites Domalski 1967_ [doi](https://doi.org/10.6028/jres.071a.037) | Table 7, p. 7, row 1; `ORC-7SENU32VE5.a9c6bc` |  |
| AlB12 | [AlB12](https://data.orchid-project.org/compounds/AlB12.html) | -15.253 kJ/mol-atom | 298.15 | model |  | 16.476 (oqmd-1437941) | [3] Campbell 1999; _cites Fries_ [doi](https://doi.org/10.1016/s0040-6031%2897%2900478-4) | Table 7, p. 7, row 2; `ORC-BZBVIVDFD3.641832` |  |
| AlB12 | [AlB12](https://data.orchid-project.org/compounds/AlB12.html) | -7.13 kJ/mol-atom | 298.15 | model |  | 16.476 (oqmd-1437941) | [3] Campbell 1999; _cites Batzner 1994_ | Table 7, p. 7, row 4; `ORC-7BHMNQTERA.e9b4e0` |  |
| AlB2 | [AlB2](https://data.orchid-project.org/compounds/AlB2.html) | -50.332 kJ/mol-atom | 298.15 | model | -4.148 (mp-aaaaabki) | -4.243 (oqmd-103360) | [3] Campbell 1999; _cites Barin 1989_ | Table 7, p. 7, row 3; `ORC-VX6XF7LNLH.cdab39` |  |
| AlB2 | [AlB2](https://data.orchid-project.org/compounds/AlB2.html) | -28.603 kJ/mol-atom | 298.15 | model | -4.148 (mp-aaaaabki) | -4.243 (oqmd-103360) | [3] Campbell 1999; _cites Fries_ [doi](https://doi.org/10.1016/s0040-6031%2897%2900478-4) | Table 7, p. 7, row 2; `ORC-BZBVIVDFD3.caed02` |  |
| AlB2 | [AlB2](https://data.orchid-project.org/compounds/AlB2.html) | -22.3 kJ/mol-atom ± 4.2 | 298.15 | experimental | -4.148 (mp-aaaaabki) | -4.243 (oqmd-103360) | [3] Campbell 1999; _cites Domalski 1967_ [doi](https://doi.org/10.6028/jres.071a.037) | Table 7, p. 7, row 1; `ORC-7SENU32VE5.f12e21` |  |
| AlB2 | [AlB2](https://data.orchid-project.org/compounds/AlB2.html) | -21.8 kJ/mol-atom | 298.15 | model | -4.148 (mp-aaaaabki) | -4.243 (oqmd-103360) | [3] Campbell 1999; _cites Batzner 1994_ | Table 7, p. 7, row 4; `ORC-7BHMNQTERA.f88d2d` |  |
| AlB2 | [AlB2](https://data.orchid-project.org/compounds/AlB2.html) | -19.1 kJ/mol-atom | 298.15 | model | -4.148 (mp-aaaaabki) | -4.243 (oqmd-103360) | [3] Campbell 1999 | Table 7, p. 7, row 5; `ORC-OFWRUQIJOX.6e4d8b` |  |

## Other properties

### Other property (2)

Table: Other property, Al–B system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Other; _printed: enthalpy of the peritectic reaction_ | -2.55 kJ/mol atoms | 1245.15 |  | model | [2] Mirković 2004 | p. 5; `ORC-Z4S4NP74K4` | “The calculated enthalpy of the peritectic reaction at 972 ◦ C is -2.55 kJ/mol atoms, corresponding to the reaction given in Eq. (1).” |
| Other; _printed: enthalpy of melting_ | 41.2 kJ/mol atoms | 1779.15 |  | model | [2] Mirković 2004 | p. 6; `ORC-4D6QEYNRC6` | “At the metastable congruent melting point of AlB2 at 1506 ◦ C, the enthalpy of melting is even 41.2 kJ/mol atoms.” |

## Sources

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

1. I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
2. Djordje Mirković, Joachim Gröbner, Rainer Schmid-Fetzer, Olga Fabrichnaya, Hans Leo Lukas, Experimental study and thermodynamic re-assessment of the Al–B system, Journal of Alloys and Compounds 384, 168-174 (2004). [doi:10.1016/j.jallcom.2004.04.100](https://doi.org/10.1016/j.jallcom.2004.04.100)
3. C. E. Campbell, U. R. Kattner, A thermodynamic assessment of the Ni-Al-B system, JPE 20, 485-496 (1999). [doi:10.1361/105497199770340743](https://doi.org/10.1361/105497199770340743)

## 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/).