# Al–Mg phases

> Al–Mg system: 12 phases (tier A 7, liquid 1, needs_review 4); 8 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-MG.html · Markdown: https://data.orchid-project.org/phases/pages/AL-MG.md

12 phases (tier A 7, liquid 1, needs_review 4); 8 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-MG) · [full JSON](https://data.orchid-project.org/phases/systems/AL-MG.json) · [Al–Mg system page](https://data.orchid-project.org/systems/AL-MG.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-MG.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Al–Mg system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [AL12MG17_A12](#phase-al-mg-al12mg17-a12); _phase:al-mg:al12mg17-a12_ | alpha-Mn · A12 · cI58 · I-43m (217) | tier A: standard phase name | stable in 10 of 10 calculated diagram(s): 300–740 K, x(Mg) 0.46709–0.70207 | 58 | 10 |
| [AL8MG5_BETA](#phase-al-mg-al8mg5-beta); _phase:al-mg:al8mg5-beta_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–724.3 K, x(Mg) 0.38462–0.38462 | 9 | 1 |
| [ALMG_BETA](#phase-al-mg-almg-beta); _phase:al-mg:almg-beta_ |  | needs_review | stable in 9 of 9 calculated diagram(s): 300–728.45 K, x(Mg) 0.385–0.41517 | 15 | 9 |
| [ALMG_EPS](#phase-al-mg-almg-eps); _phase:al-mg:almg-eps_ |  | needs_review | stable in 9 of 9 calculated diagram(s): 457.89–724.18 K, x(Mg) 0.43396–0.47001 | 18 | 9 |
| [ALMG_ZETA](#phase-al-mg-almg-zeta); _phase:al-mg:almg-zeta_ |  | needs_review | stable in 4 of 4 calculated diagram(s): 638.08–726.59 K, x(Mg) 0.47475–0.475 | 4 | 4 |
| [BCC_A2](#phase-al-mg-bcc-a2); _phase:al-mg:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 10 calculated diagram(s) | 0 | 10 |
| [C14_LAVES](#phase-al-mg-c14-laves); _phase:al-mg:c14-laves_ | MgZn2 · C14 · hP12 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [C15_LAVES](#phase-al-mg-c15-laves); _phase:al-mg:c15-laves_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [C36_LAVES](#phase-al-mg-c36-laves); _phase:al-mg:c36-laves_ | MgNi2 · C36 · hP24 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [FCC_A1](#phase-al-mg-fcc-a1); _phase:al-mg:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 10 of 10 calculated diagram(s): 300–933.47 K, x(Mg) 0–0.1838 | 5 | 10 |
| [HCP_A3](#phase-al-mg-hcp-a3); _phase:al-mg:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 10 of 10 calculated diagram(s): 300–2499.25 K, x(Mg) 0.86562–1 | 5 | 10 |
| [LIQUID](#phase-al-mg-liquid); _phase:al-mg:liquid_ | liquid | liquid | stable in 10 of 10 calculated diagram(s): 707.63–2500 K, x(Mg) 0–1 | 31 | 10 |

## AL12MG17_A12 (Al–Mg)

- Id: `phase:al-mg:al12mg17-a12`; status `assigned`
- Structure: alpha-Mn · A12 · cI58 · I-43m (217); type `st:a12-alpha-mn-ci58`; tier A: standard phase name; confidence high
- Stability: stable in 10 of 10 calculated diagram(s): 300–740 K, x(Mg) 0.46709–0.70207
- Literature: 58 values (58 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:al12mg17-a12)

Names (23): _corpus: _corpus:phase:al-mg:al12mg17-a12  
_paper: _paper:10.1016/0364-5916(93)90017-6:Al12Mg17, paper:10.1016/0364-5916(93)90017-6:γ, paper:10.1016/j.calphad.2005.08.004:γ, paper:10.1016/j.calphad.2005.08.004:γ-Al5Al12Al12, paper:10.1016/j.calphad.2005.08.004:γ-Al5Al12Mg12, paper:10.1016/j.calphad.2005.08.004:γ-Al5Mg12Al12, paper:10.1016/j.calphad.2005.08.004:γ-Al5Mg12Mg12, paper:10.1016/j.calphad.2005.08.004:γ-Mg5Al12Al12, paper:10.1016/j.calphad.2005.08.004:γ-Mg5Al12Mg12, paper:10.1016/j.calphad.2005.08.004:γ-Mg5Mg12Al12, paper:sha256-85fd53a1a176b694:Al12Mg17, paper:sha256-85fd53a1a176b694:AlMg-γ  
_tdb: _tdb:AlMg-05Zho.tdb:AL12MG17_A12, tdb:AlMg-12Tan.tdb:AL12MG17_A12, tdb:AlMg-13Tok.tdb:AL12MG17_A12, tdb:AlMg-20Shi.tdb:AL12MG17_A12, tdb:AlMg-23Hal.tdb:AL12MG17_A12, tdb:AlMg-86Lud.tdb:AL12MG17_A12, tdb:AlMg-90Sau.tdb:AL12MG17_A12, tdb:AlMg-93Zuo.tdb:AL12MG17_A12, tdb:AlMg-98Lia-LB.tdb:AL12MG17_A12, tdb:AlMg-98Zak.tdb:AL12MG17_A12  


### TDB models of AL12MG17_A12 (10): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): AL12MG17_A12, type code %, sha256 `ff00db3daedb96d8…`

~~~~text
50: PHASE AL12MG17_A12 % 3 5 12 12 !
51: CONST AL12MG17_A12 : MG : AL MG% : AL% MG : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): AL12MG17_A12, type code %, sha256 `e407a985a133b167…`

~~~~text
57: PHASE AL12MG17_A12 % 3 5 12 12 !
58: CONST AL12MG17_A12 : MG : AL MG% : AL% MG : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): AL12MG17_A12, type code %, sha256 `36113d4594b47a08…`

~~~~text
51: PHASE AL12MG17_A12 % 3 5 12 12 !
52: CONST AL12MG17_A12 : MG : AL MG% : AL% MG : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): AL12MG17_A12, type code %, sha256 `187a670f0e95cf53…`

~~~~text
53: PHASE AL12MG17_A12 % 3 5 12 12 !
54: CONST AL12MG17_A12 : MG : AL MG% : AL% MG : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): AL12MG17_A12, type code %, sha256 `8b77728be5166a67…`

~~~~text
55: PHASE AL12MG17_A12 % 3 5 12 12 !
56: CONST AL12MG17_A12 : AL MG% : AL MG% : AL% MG : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): AL12MG17_A12, type code %, sha256 `bcdbc20f78145d8a…`

~~~~text
53: PHASE AL12MG17_A12 % 1 1 !
54: CONST AL12MG17_A12 : AL MG : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): AL12MG17_A12, type code %, sha256 `44413666c4d65298…`

~~~~text
50: PHASE AL12MG17_A12 % 3 24 10 24 !
51: CONST AL12MG17_A12 : MG : AL MG : AL% MG : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): AL12MG17_A12, type code %, sha256 `bb08b378110909d0…`

~~~~text
55: PHASE AL12MG17_A12 % 3 13 12 4 !
56: CONST AL12MG17_A12 : MG : AL% MG : AL MG% : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): AL12MG17_A12, type code %, sha256 `c2f1f390d6dd2b92…`

~~~~text
52: PHASE AL12MG17_A12 % 3 5 12 12 !
53: CONST AL12MG17_A12 : MG : AL MG% : AL% MG : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): AL12MG17_A12, type code %, sha256 `db0f47929753301c…`

~~~~text
52: PHASE AL12MG17_A12 % 3 24 8 26 !
53: CONST AL12MG17_A12 : AL% MG : AL MG% : MG : !
~~~~

Example references (9 of 9; assessments first): 

- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## AL8MG5_BETA (Al–Mg)

- Id: `phase:al-mg:al8mg5-beta`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-93Zuo.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Stoichiometry: Al 0.6154, Mg 0.3846
- Stability: stable in 1 of 1 calculated diagram(s): 300–724.3 K, x(Mg) 0.38462–0.38462
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:al8mg5-beta)

Names (4): _corpus: _corpus:phase:al-mg:al8mg5-beta  
_paper: _paper:10.1016/0364-5916(93)90017-6:Al8Mg5, paper:10.1016/0364-5916(93)90017-6:β  
_tdb: _tdb:AlMg-93Zuo.tdb:AL8MG5_BETA  


### TDB models of AL8MG5_BETA (1): PHASE and CONSTITUENT statements as written

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): AL8MG5_BETA, type code %, sha256 `bb08b378110909d0…`

~~~~text
40: PHASE AL8MG5_BETA % 2 8 5 !
41: CONST AL8MG5_BETA : AL : MG : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_

## ALMG_BETA (Al–Mg)

- Id: `phase:al-mg:almg-beta`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; no_structure_token; off_stoichiometric_model
- Candidate (literature_printed): Al45Mg28 · cF1832 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Al45Mg28 · cF1832 · Fd-3m (227) — Hallstedt 2025 mmc2 row for ALMG_BETA: Al45Mg28
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-05Zho.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-12Tan.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-13Tok.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-20Shi.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-23Hal.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Candidate (tdb_comment): Al45Mg28 · cF1832 · Fd-3m — AlMg-86Lud.tdb: 'Prototype Al45Mg28 (cF1832, Fd-3m)'
- Stability: stable in 9 of 9 calculated diagram(s): 300–728.45 K, x(Mg) 0.385–0.41517
- Literature: 15 values (15 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:almg-beta)

Names (12): _corpus: _corpus:phase:al-mg:almg-beta  
_paper: _paper:10.1016/j.calphad.2005.08.004:β, paper:sha256-85fd53a1a176b694:AlMg-β  
_tdb: _tdb:AlMg-05Zho.tdb:ALMG_BETA, tdb:AlMg-12Tan.tdb:ALMG_BETA, tdb:AlMg-13Tok.tdb:ALMG_BETA, tdb:AlMg-20Shi.tdb:ALMG_BETA, tdb:AlMg-23Hal.tdb:ALMG_BETA, tdb:AlMg-86Lud.tdb:ALMG_BETA, tdb:AlMg-90Sau.tdb:ALMG_BETA, tdb:AlMg-98Lia-LB.tdb:ALMG_BETA, tdb:AlMg-98Zak.tdb:ALMG_BETA  


### TDB models of ALMG_BETA (9): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): ALMG_BETA, type code %, sha256 `ff00db3daedb96d8…`

~~~~text
40: PHASE ALMG_BETA % 2 140 89 !
41: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): ALMG_BETA, type code %, sha256 `e407a985a133b167…`

~~~~text
47: PHASE ALMG_BETA % 2 140 89 !
48: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): ALMG_BETA, type code %, sha256 `36113d4594b47a08…`

~~~~text
41: PHASE ALMG_BETA % 2 140 89 !
42: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): ALMG_BETA, type code %, sha256 `187a670f0e95cf53…`

~~~~text
43: PHASE ALMG_BETA % 2 140 89 !
44: CONST ALMG_BETA : AL% MG : MG : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): ALMG_BETA, type code %, sha256 `8b77728be5166a67…`

~~~~text
45: PHASE ALMG_BETA % 2 140 89 !
46: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): ALMG_BETA, type code %, sha256 `bcdbc20f78145d8a…`

~~~~text
48: PHASE ALMG_BETA % 2 3 2 !
49: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): ALMG_BETA, type code %, sha256 `44413666c4d65298…`

~~~~text
40: PHASE ALMG_BETA % 2 0.615 0.385 !
41: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): ALMG_BETA, type code %, sha256 `c2f1f390d6dd2b92…`

~~~~text
42: PHASE ALMG_BETA % 2 140 89 !
43: CONST ALMG_BETA : AL : MG : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): ALMG_BETA, type code %, sha256 `db0f47929753301c…`

~~~~text
42: PHASE ALMG_BETA % 2 0.615 0.385 !
43: CONST ALMG_BETA : AL : MG : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## ALMG_EPS (Al–Mg)

- Id: `phase:al-mg:almg-eps`; status `needs_review`
- No structure assigned. Why: models_disagree_on_composition; name_has_descriptive_tokens:EPS; no_structure_token; sgte_mmc2_rows_disagree
- Candidate (dft_oqmd): R-3 (148) — on-hull OQMD Al30 Mg23 at x(MG)=0.4340
- Candidate (literature_printed): Al30Mg23 · hR53 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Al30Mg23 · hR53 · R-3 (148) — Hallstedt 2025 mmc2 row for ALMG_EPS: Al30Mg23 (possibly same as R-(Co,Cr,Mo))
- Candidate (sgte_mmc2): R-(Co,Cr,Mo) · hR53 · R-3 (148) — Hallstedt 2025 mmc2 row for ALMG_EPS: Al30Mg23
- Candidate (tdb_comment): Al30Mg23 · hR53 · R-3 — AlMg-05Zho.tdb: 'Prototype Al30Mg23 (hR53, R-3), possibly same as R-(Co,Cr,Mo)'
- Candidate (tdb_comment): Al30Mg23 · hR53 · R-3 — AlMg-12Tan.tdb: 'Prototype Al30Mg23 (hR53, R-3), possibly same as R-(Co,Cr,Mo)'
- Candidate (tdb_comment): Al30Mg23 · hR53 · R-3 — AlMg-13Tok.tdb: 'Prototype Al30Mg23 (hR53, R-3), possibly same as R-(Co,Cr,Mo)'
- Candidate (tdb_comment): Al30Mg23 · hR53 · R-3 — AlMg-20Shi.tdb: 'Prototype Al30Mg23 (hR53, R-3), possibly same as R-(Co,Cr,Mo)'
- Stability: stable in 9 of 9 calculated diagram(s): 457.89–724.18 K, x(Mg) 0.43396–0.47001
- Literature: 18 values (18 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:almg-eps)

Names (15): _corpus: _corpus:phase:al-mg:almg-eps  
_paper: _paper:10.1016/0364-5916(93)90017-6:ε, paper:10.1016/j.calphad.2005.08.004:ε, paper:10.1016/j.calphad.2005.08.004:ε-Al30Mg23, paper:sha256-85fd53a1a176b694:AlMg-ε  
_system_alias: _system_alias:al-mg:epsilon  
_tdb: _tdb:AlMg-05Zho.tdb:ALMG_EPS, tdb:AlMg-12Tan.tdb:ALMG_EPS, tdb:AlMg-13Tok.tdb:ALMG_EPS, tdb:AlMg-20Shi.tdb:ALMG_EPS, tdb:AlMg-23Hal.tdb:ALMG_EPS, tdb:AlMg-90Sau.tdb:ALMG_EPS, tdb:AlMg-93Zuo.tdb:ALMG_EPS, tdb:AlMg-98Lia-LB.tdb:ALMG_EPS, tdb:AlMg-98Zak.tdb:ALMG_EPS  


### TDB models of ALMG_EPS (9): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): ALMG_EPS, type code %, sha256 `ff00db3daedb96d8…`

~~~~text
45: PHASE ALMG_EPS % 2 30 23 !
46: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): ALMG_EPS, type code %, sha256 `e407a985a133b167…`

~~~~text
52: PHASE ALMG_EPS % 2 30 23 !
53: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): ALMG_EPS, type code %, sha256 `36113d4594b47a08…`

~~~~text
46: PHASE ALMG_EPS % 2 30 23 !
47: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): ALMG_EPS, type code %, sha256 `187a670f0e95cf53…`

~~~~text
48: PHASE ALMG_EPS % 2 30 23 !
49: CONST ALMG_EPS : AL% MG : MG : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): ALMG_EPS, type code %, sha256 `8b77728be5166a67…`

~~~~text
50: PHASE ALMG_EPS % 2 30 23 !
51: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): ALMG_EPS, type code %, sha256 `44413666c4d65298…`

~~~~text
45: PHASE ALMG_EPS % 2 14 11 !
46: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): ALMG_EPS, type code %, sha256 `bb08b378110909d0…`

~~~~text
45: PHASE ALMG_EPS % 2 0.56 0.44 !
46: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): ALMG_EPS, type code %, sha256 `c2f1f390d6dd2b92…`

~~~~text
47: PHASE ALMG_EPS % 2 30 23 !
48: CONST ALMG_EPS : AL : MG : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): ALMG_EPS, type code %, sha256 `db0f47929753301c…`

~~~~text
47: PHASE ALMG_EPS % 2 0.56 0.44 !
48: CONST ALMG_EPS : AL : MG : !
~~~~

Example references (10 of 11; assessments first): 

- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_
- [doi:10.1007/bf02670245](https://doi.org/10.1007/bf02670245) N. C. Goel, J. R. Cahoon, B. Mikkelsen, An experimental technique for the rapid determination of binary phase diagrams: The Al-Mg system, Metall Trans A 20, 197-203 (1989).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(96)02595-9](https://doi.org/10.1016/s0925-8388%2896%2902595-9) H.L. Su, M. Harmelin, P. Donnadieu, C. Baetzner, H.J. Seifert, H.L. Lukas et al., Experimental investigation of the Mg-Al phase diagram from 47 to 63 at.% Al, Journal of Alloys and Compounds 247, 57-65 (1997).  
_cited as the source of values for this phase_

## ALMG_ZETA (Al–Mg)

- Id: `phase:al-mg:almg-zeta`; status `needs_review`
- No structure assigned. Why: models_disagree_on_composition; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Al52Mg47) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Al52Mg47) — Hallstedt 2025 mmc2 row for ALMG_ZETA: Al52Mg47
- Stability: stable in 4 of 4 calculated diagram(s): 638.08–726.59 K, x(Mg) 0.47475–0.475
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:almg-zeta)

Names (6): _corpus: _corpus:phase:al-mg:almg-zeta  
_paper: _paper:10.1016/0364-5916(93)90017-6:ζ  
_tdb: _tdb:AlMg-86Lud.tdb:ALMG_ZETA, tdb:AlMg-90Sau.tdb:ALMG_ZETA, tdb:AlMg-93Zuo.tdb:ALMG_ZETA, tdb:AlMg-98Zak.tdb:ALMG_ZETA  


### TDB models of ALMG_ZETA (4): PHASE and CONSTITUENT statements as written

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): ALMG_ZETA, type code %, sha256 `bcdbc20f78145d8a…`

~~~~text
58: PHASE ALMG_ZETA % 2 52 47 !
59: CONST ALMG_ZETA : AL : MG : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): ALMG_ZETA, type code %, sha256 `44413666c4d65298…`

~~~~text
55: PHASE ALMG_ZETA % 2 0.525 0.475 !
56: CONST ALMG_ZETA : AL : MG : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): ALMG_ZETA, type code %, sha256 `bb08b378110909d0…`

~~~~text
50: PHASE ALMG_ZETA % 2 0.525 0.475 !
51: CONST ALMG_ZETA : AL : MG : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): ALMG_ZETA, type code %, sha256 `db0f47929753301c…`

~~~~text
57: PHASE ALMG_ZETA % 2 0.525 0.475 !
58: CONST ALMG_ZETA : AL : MG : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_

## BCC_A2 (Al–Mg)

- Id: `phase:al-mg:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: not stable in 10 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:bcc-a2)

Names (11): _corpus: _corpus:phase:al-mg:bcc-a2  
_tdb: _tdb:AlMg-05Zho.tdb:BCC_A2, tdb:AlMg-12Tan.tdb:BCC_A2, tdb:AlMg-13Tok.tdb:BCC_A2, tdb:AlMg-20Shi.tdb:BCC_A2, tdb:AlMg-23Hal.tdb:BCC_A2, tdb:AlMg-86Lud.tdb:BCC_A2, tdb:AlMg-90Sau.tdb:BCC_A2, tdb:AlMg-93Zuo.tdb:BCC_A2, tdb:AlMg-98Lia-LB.tdb:BCC_A2, tdb:AlMg-98Zak.tdb:BCC_A2  


### TDB models of BCC_A2 (10): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): BCC_A2, type code %B, sha256 `ff00db3daedb96d8…`

~~~~text
30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): BCC_A2, type code %B, sha256 `e407a985a133b167…`

~~~~text
37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): BCC_A2, type code %B, sha256 `36113d4594b47a08…`

~~~~text
31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): BCC_A2, type code %B, sha256 `187a670f0e95cf53…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): BCC_A2, type code %B, sha256 `8b77728be5166a67…`

~~~~text
35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): BCC_A2, type code %B, sha256 `bcdbc20f78145d8a…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): BCC_A2, type code %B, sha256 `44413666c4d65298…`

~~~~text
30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): BCC_A2, type code %B, sha256 `bb08b378110909d0…`

~~~~text
30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): BCC_A2, type code %B, sha256 `c2f1f390d6dd2b92…`

~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : AL MG : VA : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): BCC_A2, type code %B, sha256 `db0f47929753301c…`

~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : AL MG : VA : !
~~~~

Example references (9 of 9; assessments first): 

- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## C14_LAVES (Al–Mg)

- Id: `phase:al-mg:c14-laves`; status `assigned`
- Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type `st:c14-mgzn2-hp12`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in AlMg-23Hal.tdb also describes the disordered state
- 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-mg:c14-laves)

Names (2): _corpus: _corpus:phase:al-mg:c14-laves  
_tdb: _tdb:AlMg-23Hal.tdb:C14_LAVES  


### TDB models of C14_LAVES (1): PHASE and CONSTITUENT statements as written

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): C14_LAVES, type code %, sha256 `8b77728be5166a67…`

~~~~text
60: PHASE C14_LAVES % 3 1 2 3 !
61: CONST C14_LAVES : AL% MG% : AL MG : AL% MG% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_

## C15_LAVES (Al–Mg)

- Id: `phase:al-mg:c15-laves`; status `assigned`
- Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in AlMg-23Hal.tdb also describes the disordered state
- 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-mg:c15-laves)

Names (2): _corpus: _corpus:phase:al-mg:c15-laves  
_tdb: _tdb:AlMg-23Hal.tdb:C15_LAVES  


### TDB models of C15_LAVES (1): PHASE and CONSTITUENT statements as written

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): C15_LAVES, type code %, sha256 `8b77728be5166a67…`

~~~~text
65: PHASE C15_LAVES % 2 2 4 !
66: CONST C15_LAVES : AL MG : AL% MG% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_

## C36_LAVES (Al–Mg)

- Id: `phase:al-mg:c36-laves`; status `assigned`
- Structure: MgNi2 · C36 · hP24 · P6_3/mmc (194); type `st:c36-mgni2-hp24`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in AlMg-23Hal.tdb also describes the disordered state
- 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-mg:c36-laves)

Names (2): _corpus: _corpus:phase:al-mg:c36-laves  
_tdb: _tdb:AlMg-23Hal.tdb:C36_LAVES  


### TDB models of C36_LAVES (1): PHASE and CONSTITUENT statements as written

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): C36_LAVES, type code %, sha256 `8b77728be5166a67…`

~~~~text
70: PHASE C36_LAVES % 4 1 1 1 3 !
71: CONST C36_LAVES : AL MG : AL MG : AL MG : AL MG : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_

## FCC_A1 (Al–Mg)

- Id: `phase:al-mg: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 10 of 10 calculated diagram(s): 300–933.47 K, x(Mg) 0–0.1838
- Literature: 5 values (5 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:fcc-a1)

Names (14): _corpus: _corpus:phase:al-mg:fcc-a1  
_paper: _paper:10.1016/0364-5916(93)90017-6:(Al), paper:10.1016/j.calphad.2005.08.004:fcc-A1, paper:sha256-85fd53a1a176b694:fcc-A1  
_tdb: _tdb:AlMg-05Zho.tdb:FCC_A1, tdb:AlMg-12Tan.tdb:FCC_A1, tdb:AlMg-13Tok.tdb:FCC_A1, tdb:AlMg-20Shi.tdb:FCC_A1, tdb:AlMg-23Hal.tdb:FCC_A1, tdb:AlMg-86Lud.tdb:FCC_A1, tdb:AlMg-90Sau.tdb:FCC_A1, tdb:AlMg-93Zuo.tdb:FCC_A1, tdb:AlMg-98Lia-LB.tdb:FCC_A1, tdb:AlMg-98Zak.tdb:FCC_A1  


### TDB models of FCC_A1 (10): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): FCC_A1, type code %A, sha256 `ff00db3daedb96d8…`

~~~~text
25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): FCC_A1, type code %A, sha256 `e407a985a133b167…`

~~~~text
32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): FCC_A1, type code %A, sha256 `36113d4594b47a08…`

~~~~text
26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): FCC_A1, type code %A, sha256 `187a670f0e95cf53…`

~~~~text
28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): FCC_A1, type code %A, sha256 `8b77728be5166a67…`

~~~~text
30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): FCC_A1, type code %A, sha256 `bcdbc20f78145d8a…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : AL% MG : VA : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): FCC_A1, type code %A, sha256 `44413666c4d65298…`

~~~~text
25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : AL% MG : VA : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): FCC_A1, type code %, sha256 `bb08b378110909d0…`

~~~~text
25: PHASE FCC_A1 % 2 1 1 !
26: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): FCC_A1, type code %A, sha256 `c2f1f390d6dd2b92…`

~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : AL MG : VA : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): FCC_A1, type code %A, sha256 `db0f47929753301c…`

~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : AL% MG : VA : !
~~~~

Example references (9 of 9; assessments first): 

- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## HCP_A3 (Al–Mg)

- Id: `phase:al-mg:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stability: stable in 10 of 10 calculated diagram(s): 300–2499.25 K, x(Mg) 0.86562–1
- Literature: 5 values (5 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:hcp-a3)

Names (14): _corpus: _corpus:phase:al-mg:hcp-a3  
_paper: _paper:10.1016/0364-5916(93)90017-6:(Mg), paper:10.1016/j.calphad.2005.08.004:hcp-A3, paper:sha256-85fd53a1a176b694:hcp-A3  
_tdb: _tdb:AlMg-05Zho.tdb:HCP_A3, tdb:AlMg-12Tan.tdb:HCP_A3, tdb:AlMg-13Tok.tdb:HCP_A3, tdb:AlMg-20Shi.tdb:HCP_A3, tdb:AlMg-23Hal.tdb:HCP_A3, tdb:AlMg-86Lud.tdb:HCP_A3, tdb:AlMg-90Sau.tdb:HCP_A3, tdb:AlMg-93Zuo.tdb:HCP_A3, tdb:AlMg-98Lia-LB.tdb:HCP_A3, tdb:AlMg-98Zak.tdb:HCP_A3  


### TDB models of HCP_A3 (10): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): HCP_A3, type code %A, sha256 `ff00db3daedb96d8…`

~~~~text
35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): HCP_A3, type code %A, sha256 `e407a985a133b167…`

~~~~text
42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): HCP_A3, type code %A, sha256 `36113d4594b47a08…`

~~~~text
36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): HCP_A3, type code %A, sha256 `187a670f0e95cf53…`

~~~~text
38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): HCP_A3, type code %A, sha256 `8b77728be5166a67…`

~~~~text
40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): HCP_A3, type code %A, sha256 `bcdbc20f78145d8a…`

~~~~text
43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : AL MG% : VA : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): HCP_A3, type code %A, sha256 `44413666c4d65298…`

~~~~text
35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : AL MG% : VA : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): HCP_A3, type code %, sha256 `bb08b378110909d0…`

~~~~text
35: PHASE HCP_A3 % 2 1 0.5 !
36: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): HCP_A3, type code %A, sha256 `c2f1f390d6dd2b92…`

~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : AL MG : VA : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): HCP_A3, type code %A, sha256 `db0f47929753301c…`

~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : AL MG% : VA : !
~~~~

Example references (9 of 9; assessments first): 

- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## LIQUID (Al–Mg)

- Id: `phase:al-mg:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 10 of 10 calculated diagram(s): 707.63–2500 K, x(Mg) 0–1
- Literature: 31 values (31 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-mg:liquid)

Names (14): _corpus: _corpus:phase:al-mg:liquid  
_paper: _paper:10.1016/0364-5916(93)90017-6:L, paper:10.1016/j.calphad.2005.08.004:L, paper:sha256-85fd53a1a176b694:Liquid  
_tdb: _tdb:AlMg-05Zho.tdb:LIQUID, tdb:AlMg-12Tan.tdb:LIQUID, tdb:AlMg-13Tok.tdb:LIQUID, tdb:AlMg-20Shi.tdb:LIQUID, tdb:AlMg-23Hal.tdb:LIQUID, tdb:AlMg-86Lud.tdb:LIQUID, tdb:AlMg-90Sau.tdb:LIQUID, tdb:AlMg-93Zuo.tdb:LIQUID, tdb:AlMg-98Lia-LB.tdb:LIQUID, tdb:AlMg-98Zak.tdb:LIQUID  


### TDB models of LIQUID (10): PHASE and CONSTITUENT statements as written

[AlMg-05Zho.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-05Zho.tdb): LIQUID, type code %, sha256 `ff00db3daedb96d8…`

~~~~text
20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-12Tan.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-12Tan.tdb): LIQUID, type code %, sha256 `e407a985a133b167…`

~~~~text
27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-13Tok.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-13Tok.tdb): LIQUID, type code %, sha256 `36113d4594b47a08…`

~~~~text
21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-20Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-20Shi.tdb): LIQUID, type code %, sha256 `187a670f0e95cf53…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-23Hal.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-23Hal.tdb): LIQUID, type code %, sha256 `8b77728be5166a67…`

~~~~text
25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-86Lud.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-86Lud.tdb): LIQUID, type code %, sha256 `bcdbc20f78145d8a…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-90Sau.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-90Sau.tdb): LIQUID, type code %, sha256 `44413666c4d65298…`

~~~~text
20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-93Zuo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-93Zuo.tdb): LIQUID, type code %, sha256 `bb08b378110909d0…`

~~~~text
20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Lia-LB.tdb): LIQUID, type code %, sha256 `c2f1f390d6dd2b92…`

~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : AL MG : !
~~~~

[AlMg-98Zak.tdb](https://orchid-project.org/data/databases/sgte-binary/AlMg-98Zak.tdb): LIQUID, type code %, sha256 `db0f47929753301c…`

~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : AL MG : !
~~~~

Example references (9 of 9; assessments first): 

- [doi:10.1016/0364-5916(93)90017-6](https://doi.org/10.1016/0364-5916%2893%2990017-6) Y. Zuo, Y.A. Chang, Thermodynamic calculation of the AlMg phase diagram, Calphad 17, 161-174 (1993).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2005.08.004](https://doi.org/10.1016/j.calphad.2005.08.004) Yu Zhong, Mei Yang, Zi-Kui Liu, Contribution of first-principles energetics to Al–Mg thermodynamic modeling, Calphad 29, 303-311 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0364-5916(90)90040-7](https://doi.org/10.1016/0364-5916%2890%2990040-7) N. Saunders, Calphad, 14, 61-70 (1990).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2023.102577](https://doi.org/10.1016/j.calphad.2023.102577) B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.153962](https://doi.org/10.1016/j.jallcom.2020.153962) R. Shi, Z. Zhu, A.A. Luo, J. Alloys Compd., 825, 153962(2020).  
_assessment that models this phase_
- [doi:10.1016/j.tca.2011.10.017](https://doi.org/10.1016/j.tca.2011.10.017) Ying Tang, Yong Du, Lijun Zhang, Xiaoming Yuan, George Kaptay, Thermodynamic description of the Al–Mg–Si system using a new formulation for the temperature dependence of the excess Gibbs energy, Thermochimica Acta 527, 131-142 (2012).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1986-770303](https://doi.org/10.1515/ijmr-1986-770303) D. Luedecke, K. Hack, Z. Metallkd., 77, 145-51(1986).  
_assessment that models this phase_
- [doi:10.2320/matertrans.MI201226](https://doi.org/10.2320/matertrans.MI201226) T. Tokunaga, H. Kominato, S. Iikubo, H. Ohtani, Mater. Trans. (JIM), 54, 647-55(2013).  
_assessment that models this phase_
- [doi:10.3139/ijmr-1998-0101](https://doi.org/10.3139/ijmr-1998-0101) P. Liang, H.-L. Su, P. Donnadieu, M.G. Harmelin, A. Quivy, P. Ochin, G. Effenberg, H.J. Seifert, H.L. Lukas, F. Aldinger, Z. Metallkd., 89, 536-40 (1998)  
_assessment that models this phase_

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).