# Al–Th phases

> Al–Th system: 11 phases (tier A 8, tier C 1, liquid 1, needs_review 1); 10 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/AL-TH.html · Markdown: https://data.orchid-project.org/phases/pages/AL-TH.md

11 phases (tier A 8, tier C 1, liquid 1, needs_review 1); 10 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: [interactive registry](https://orchid-project.org/phases/?q=AL-TH) · [full JSON](https://data.orchid-project.org/phases/systems/AL-TH.json) · [Al–Th system page](https://data.orchid-project.org/systems/AL-TH.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-TH.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Al–Th system (11)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [AL2TH_C32](#phase-al-th-al2th-c32); _phase:al-th:al2th-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1791.09 K, x(Th) 0.33333–0.33333 | 8 | 1 |
| [AL2TH3_D5A](#phase-al-th-al2th3-d5a); _phase:al-th:al2th3-d5a_ | Si2U3 · D5_a · tP10 · P4/mbm (127) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1344.18–1572.16 K, x(Th) 0.6–0.6 | 8 | 1 |
| [AL3TH_D019](#phase-al-th-al3th-d019); _phase:al-th:al3th-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1394.13 K, x(Th) 0.25–0.25 | 4 | 1 |
| [AL3TH2](#phase-al-th-al3th2); _phase:al-th:al3th2_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1377.34–1666.62 K, x(Th) 0.4–0.4 | 6 | 1 |
| [AL7TH2](#phase-al-th-al7th2); _phase:al-th:al7th2_ | Al7Th2 · oP18 · Pbam (55) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1151.47 K, x(Th) 0.22222–0.22222 | 4 | 1 |
| [ALTH_B33](#phase-al-th-alth-b33); _phase:al-th:alth-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1589.61 K, x(Th) 0.5–0.5 | 8 | 1 |
| [ALTH2_C16](#phase-al-th-alth2-c16); _phase:al-th:alth2-c16_ | Al2Cu · C16 · tI12 · I4/mcm (140) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1582.7 K, x(Th) 0.66667–0.66667 | 8 | 1 |
| [BCC_A2](#phase-al-th-bcc-a2); _phase:al-th:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1629.17–3999.24 K, x(Th) 0.98629–1 | 2 | 1 |
| [FCC_A1](#phase-al-th-fcc-a1); _phase:al-th:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1664.67 K, x(Th) 0–1 | 6 | 1 |
| [HCP_A3](#phase-al-th-hcp-a3); _phase:al-th:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [LIQUID](#phase-al-th-liquid); _phase:al-th:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 901.27–4000 K, x(Th) 0–1 | 24 | 1 |

## AL2TH_C32 (Al–Th)

- Id: `phase:al-th:al2th-c32`; status `assigned`
- Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaaazt and oqmd-3101, space group 191
- Stoichiometry: Al 0.6667, Th 0.3333
- Stability: stable in 1 of 1 calculated diagram(s): 300–1791.09 K, x(Th) 0.33333–0.33333
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:al2th-c32)

Names (5): _corpus: _corpus:phase:al-th:al2th-c32  
_mp: _mp:mp-aaaaaazt  
_oqmd: _oqmd:oqmd-3101  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:ThAl2  
_tdb: _tdb:AlTh-10Li.tdb:AL2TH_C32  


### TDB models of AL2TH_C32 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): AL2TH_C32, type code %, sha256 `dc195f386a4b4675…`

~~~~text
59: PHASE AL2TH_C32 % 2 2 1 !
60: CONST AL2TH_C32 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## AL2TH3_D5A (Al–Th)

- Id: `phase:al-th:al2th3-d5a`; status `assigned`
- Structure: Si2U3 · D5_a · tP10 · P4/mbm (127); type `st:d5-a-si2u3-tp10`; tier A: standard phase name; confidence high
- Stoichiometry: Al 0.4000, Th 0.6000
- Stability: stable in 1 of 1 calculated diagram(s): 1344.18–1572.16 K, x(Th) 0.6–0.6
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:al2th3-d5a)

Names (3): _corpus: _corpus:phase:al-th:al2th3-d5a  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:Th3Al2  
_tdb: _tdb:AlTh-10Li.tdb:AL2TH3_D5A  


### TDB models of AL2TH3_D5A (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): AL2TH3_D5A, type code %, sha256 `dc195f386a4b4675…`

~~~~text
74: PHASE AL2TH3_D5A % 2 2 3 !
75: CONST AL2TH3_D5A : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## AL3TH_D019 (Al–Th)

- Id: `phase:al-th:al3th-d019`; status `assigned`
- Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type `st:d0-19-ni3sn-hp8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaabyg and oqmd-10596, space group 194
- Stoichiometry: Al 0.7500, Th 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 300–1394.13 K, x(Th) 0.25–0.25
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:al3th-d019)

Names (5): _corpus: _corpus:phase:al-th:al3th-d019  
_mp: _mp:mp-aaaaabyg  
_oqmd: _oqmd:oqmd-10596  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:ThAl3  
_tdb: _tdb:AlTh-10Li.tdb:AL3TH_D019  


### TDB models of AL3TH_D019 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): AL3TH_D019, type code %, sha256 `dc195f386a4b4675…`

~~~~text
54: PHASE AL3TH_D019 % 2 3 1 !
55: CONST AL3TH_D019 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## AL3TH2 (Al–Th)

- Id: `phase:al-th:al3th2`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Al3Th2) · tP20 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Al3Th2) · tP20 — Hallstedt 2025 mmc2 row for AL3TH2: Al3Th2
- Stoichiometry: Al 0.6000, Th 0.4000
- Stability: stable in 1 of 1 calculated diagram(s): 1377.34–1666.62 K, x(Th) 0.4–0.4
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:al3th2)

Names (3): _corpus: _corpus:phase:al-th:al3th2  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:Th2Al3  
_tdb: _tdb:AlTh-10Li.tdb:AL3TH2  


### TDB models of AL3TH2 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): AL3TH2, type code %, sha256 `dc195f386a4b4675…`

~~~~text
64: PHASE AL3TH2 % 2 3 2 !
65: CONST AL3TH2 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## AL7TH2 (Al–Th)

- Id: `phase:al-th:al7th2`; status `assigned`
- Structure: Al7Th2 · oP18 · Pbam (55); type `st:al7th2-op18`; 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 0.7778, Th 0.2222
- Stability: stable in 1 of 1 calculated diagram(s): 300–1151.47 K, x(Th) 0.22222–0.22222
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:al7th2)

Names (3): _corpus: _corpus:phase:al-th:al7th2  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:Th2Al7  
_tdb: _tdb:AlTh-10Li.tdb:AL7TH2  


### TDB models of AL7TH2 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): AL7TH2, type code %, sha256 `dc195f386a4b4675…`

~~~~text
49: PHASE AL7TH2 % 2 7 2 !
50: CONST AL7TH2 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## ALTH_B33 (Al–Th)

- Id: `phase:al-th:alth-b33`; status `assigned`
- Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high
- Stoichiometry: Al 0.5000, Th 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1589.61 K, x(Th) 0.5–0.5
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:alth-b33)

Names (3): _corpus: _corpus:phase:al-th:alth-b33  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:ThAl  
_tdb: _tdb:AlTh-10Li.tdb:ALTH_B33  


### TDB models of ALTH_B33 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): ALTH_B33, type code %, sha256 `dc195f386a4b4675…`

~~~~text
69: PHASE ALTH_B33 % 2 1 1 !
70: CONST ALTH_B33 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## ALTH2_C16 (Al–Th)

- Id: `phase:al-th:alth2-c16`; status `assigned`
- Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type `st:c16-al2cu-ti12`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaacln and oqmd-10593, space group 140
- Stoichiometry: Al 0.3333, Th 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1582.7 K, x(Th) 0.66667–0.66667
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:alth2-c16)

Names (5): _corpus: _corpus:phase:al-th:alth2-c16  
_mp: _mp:mp-aaaaacln  
_oqmd: _oqmd:oqmd-10593  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:Th2Al  
_tdb: _tdb:AlTh-10Li.tdb:ALTH2_C16  


### TDB models of ALTH2_C16 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): ALTH2_C16, type code %, sha256 `dc195f386a4b4675…`

~~~~text
79: PHASE ALTH2_C16 % 2 1 2 !
80: CONST ALTH2_C16 : AL : TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## BCC_A2 (Al–Th)

- Id: `phase:al-th: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 1 calculated diagram(s): 1629.17–3999.24 K, x(Th) 0.98629–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:bcc-a2)

Names (3): _corpus: _corpus:phase:al-th:bcc-a2  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:βTh  
_tdb: _tdb:AlTh-10Li.tdb:BCC_A2  


### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): BCC_A2, type code %, sha256 `dc195f386a4b4675…`

~~~~text
39: PHASE BCC_A2 % 2 1 3 !
40: CONST BCC_A2 : AL TH% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## FCC_A1 (Al–Th)

- Id: `phase:al-th: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 1 of 1 calculated diagram(s): 300–1664.67 K, x(Th) 0–1
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:fcc-a1)

Names (4): _corpus: _corpus:phase:al-th:fcc-a1  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:(Al), paper:10.1016/j.jnucmat.2009.10.068:αTh  
_tdb: _tdb:AlTh-10Li.tdb:FCC_A1  


### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): FCC_A1, type code %, sha256 `dc195f386a4b4675…`

~~~~text
34: PHASE FCC_A1 % 2 1 1 !
35: CONST FCC_A1 : AL% TH% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_cited as the source of values for this phase_

## HCP_A3 (Al–Th)

- Id: `phase:al-th:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stoichiometry: Al 1.0000
- Stability: not stable in 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:hcp-a3)

Names (2): _corpus: _corpus:phase:al-th:hcp-a3  
_tdb: _tdb:AlTh-10Li.tdb:HCP_A3  


### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): HCP_A3, type code %, sha256 `dc195f386a4b4675…`

~~~~text
44: PHASE HCP_A3 % 2 1 0.5 !
45: CONST HCP_A3 : AL : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase_

## LIQUID (Al–Th)

- Id: `phase:al-th:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 901.27–4000 K, x(Th) 0–1
- Literature: 24 values (24 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-th:liquid)

Names (3): _corpus: _corpus:phase:al-th:liquid  
_paper: _paper:10.1016/j.jnucmat.2009.10.068:L  
_tdb: _tdb:AlTh-10Li.tdb:LIQUID  


### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written

[AlTh-10Li.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTh-10Li.tdb): LIQUID, type code %, sha256 `dc195f386a4b4675…`

~~~~text
29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : AL TH : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2009.10.068](https://doi.org/10.1016/j.jnucmat.2009.10.068) Z.S. Li, X.J. Liu, M.Z. Wen, C.P. Wang, A.T. Tang, F.S. Pan, Thermodynamic assessments of the Al–Th and Th–Zn systems, Journal of Nuclear Materials 396, 170-175 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02882381](https://doi.org/10.1007/bf02882381) M. E. Kassner, D. E. Peterson, The Al−Th (Aluminum-Thorium) system, Bulletin of Alloy Phase Diagrams 10, 466-470 (1989).  
_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).