# Al–Zn phases > Al–Zn system: 4 phases (tier A 3, liquid 1); 4 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-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/AL-ZN.md 4 phases (tier A 3, liquid 1); 4 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-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/AL-ZN.json) · [Al–Zn system page](https://data.orchid-project.org/systems/AL-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Zn system (4) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-al-zn-bcc-a2); _phase:al-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 4 calculated diagram(s): 2473.75–2500 K, x(Zn) 0–0.01517 | 0 | 4 | | [FCC_A1](#phase-al-zn-fcc-a1); _phase:al-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–933.47 K, x(Zn) 0–0.74215 | 46 | 5 | | [HCP_A3](#phase-al-zn-hcp-a3); _phase:al-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–1467.6 K, x(Zn) 0.94777–1 | 39 | 5 | | [LIQUID](#phase-al-zn-liquid); _phase:al-zn:liquid_ | liquid | liquid | stable in 5 of 5 calculated diagram(s): 653.07–2500 K, x(Zn) 0–1 | 17 | 5 | ## BCC_A2 (Al–Zn) - Id: `phase:al-zn: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 4 calculated diagram(s): 2473.75–2500 K, x(Zn) 0–0.01517 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-zn:bcc-a2) Names (5): _corpus: _corpus:phase:al-zn:bcc-a2 _tdb: _tdb:AlZn-00Mat.tdb:BCC_A2, tdb:AlZn-86Mey.tdb:BCC_A2, tdb:AlZn-93Che.tdb:BCC_A2, tdb:AlZn-93Mey-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written [AlZn-00Mat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-00Mat.tdb): BCC_A2, type code %B, sha256 `c396f22f72e3f305…` ~~~~text 33: PHASE BCC_A2 %B 2 1 3 ! 34: CONST BCC_A2 : AL ZN : VA : ! ~~~~ [AlZn-86Mey.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-86Mey.tdb): BCC_A2, type code %B, sha256 `e4f6db4a389e402f…` ~~~~text 36: PHASE BCC_A2 %B 2 1 3 ! 37: CONST BCC_A2 : AL ZN : VA : ! ~~~~ [AlZn-93Che.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Che.tdb): BCC_A2, type code %B, sha256 `b82ac7635cfdaa7b…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : AL ZN : VA : ! ~~~~ [AlZn-93Mey-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Mey-LB.tdb): BCC_A2, type code %B, sha256 `676cd7377477636f…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : AL ZN : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/0364-5916(93)90011-Y](https://doi.org/10.1016/0364-5916%2893%2990011-Y) S.-L. Chen, Y.A. Chang, Calphad, 17, 113-24(1993). _assessment that models this phase_ - [doi:10.1016/S0364-5916(01)00004-9](https://doi.org/10.1016/S0364-5916%2801%2900004-9) M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Calphad, 24, 253-84(2000). _assessment that models this phase_ ## FCC_A1 (Al–Zn) - Id: `phase:al-zn: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 5 of 5 calculated diagram(s): 300–933.47 K, x(Zn) 0–0.74215 - Literature: 46 values (40 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-zn:fcc-a1) Names (11): _corpus: _corpus:phase:al-zn:fcc-a1 _paper: _paper:10.1016/0364-5916(93)90011-y:fcc, paper:10.1016/0364-5916(93)90011-y:fcc1, paper:10.1016/s0364-5916(01)00004-9:fcc sol., paper:10.1016/s0364-5916(01)00004-9:fcc', paper:10.1016/s0364-5916(01)00004-9:fcc' sol. _tdb: _tdb:AlZn-00Mat.tdb:FCC_A1, tdb:AlZn-20Din-3g.tdb:FCC_A1, tdb:AlZn-86Mey.tdb:FCC_A1, tdb:AlZn-93Che.tdb:FCC_A1, tdb:AlZn-93Mey-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written [AlZn-00Mat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-00Mat.tdb): FCC_A1, type code %A, sha256 `c396f22f72e3f305…` ~~~~text 28: PHASE FCC_A1 %A 2 1 1 ! 29: CONST FCC_A1 : AL ZN : VA : ! ~~~~ [AlZn-20Din-3g.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-20Din-3g.tdb): FCC_A1, type code %A, sha256 `d660148fb562e023…` ~~~~text 28: PHASE FCC_A1 %A 2 1 1 ! 29: CONST FCC_A1 : AL ZN : VA : ! ~~~~ [AlZn-86Mey.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-86Mey.tdb): FCC_A1, type code %A, sha256 `e4f6db4a389e402f…` ~~~~text 31: PHASE FCC_A1 %A 2 1 1 ! 32: CONST FCC_A1 : AL ZN : VA : ! ~~~~ [AlZn-93Che.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Che.tdb): FCC_A1, type code %A, sha256 `b82ac7635cfdaa7b…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : AL ZN : VA : ! ~~~~ [AlZn-93Mey-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Mey-LB.tdb): FCC_A1, type code %A, sha256 `676cd7377477636f…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : AL ZN : VA : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/S0364-5916(01)00004-9](https://doi.org/10.1016/S0364-5916%2801%2900004-9) M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Calphad, 24, 253-84(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0364-5916(93)90011-Y](https://doi.org/10.1016/0364-5916%2893%2990011-Y) S.-L. Chen, Y.A. Chang, Calphad, 17, 113-24(1993). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.calphad.2019.101723](https://doi.org/10.1016/j.calphad.2019.101723) Alan Dinsdale, Ondrej Zobac, Ales Kroupa, Alexandra Khvan, Use of third generation data for the elements to model the thermodynamics of binary alloy systems: Part 1 – The critical assessment of data for the Al-Zn system, Calphad 68, 101723 (2020). _assessment that models this phase_ - [doi:10.1039/ct8977100383](https://doi.org/10.1039/ct8977100383) Charles Thomas Heycock, Francis Henry Neville, XXXIX.—The freezing points of alloys containing zinc and another metal, J. Chem. Soc., Trans. 71, 383-422 (1897). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-1936-281-1269](https://doi.org/10.1515/ijmr-1936-281-1269) Hermann Auer, Karl Ernst Mann, Magnetische Untersuchung des Systems Zink-Aluminium, International Journal of Materials Research 28, 323-328 (1936). _cited as the source of values for this phase_ ## HCP_A3 (Al–Zn) - Id: `phase:al-zn: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 5 of 5 calculated diagram(s): 300–1467.6 K, x(Zn) 0.94777–1 - Literature: 39 values (35 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-zn:hcp-a3) Names (9): _corpus: _corpus:phase:al-zn:hcp-a3 _paper: _paper:10.1016/0364-5916(93)90011-y:hcp, paper:10.1016/s0364-5916(01)00004-9:hcp, paper:10.1016/s0364-5916(01)00004-9:hcp sol. _tdb: _tdb:AlZn-00Mat.tdb:HCP_A3, tdb:AlZn-20Din-3g.tdb:HCP_A3, tdb:AlZn-86Mey.tdb:HCP_A3, tdb:AlZn-93Che.tdb:HCP_A3, tdb:AlZn-93Mey-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written [AlZn-00Mat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-00Mat.tdb): HCP_A3, type code %A, sha256 `c396f22f72e3f305…` ~~~~text 38: PHASE HCP_A3 %A 2 1 0.5 ! 39: CONST HCP_A3 : AL ZN : VA : ! ~~~~ [AlZn-20Din-3g.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-20Din-3g.tdb): HCP_A3, type code %A, sha256 `d660148fb562e023…` ~~~~text 38: PHASE HCP_A3 %A 2 1 0.5 ! 39: CONST HCP_A3 : AL ZN : VA : ! ~~~~ [AlZn-86Mey.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-86Mey.tdb): HCP_A3, type code %A, sha256 `e4f6db4a389e402f…` ~~~~text 41: PHASE HCP_A3 %A 2 1 0.5 ! 42: CONST HCP_A3 : AL ZN : VA : ! ~~~~ [AlZn-93Che.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Che.tdb): HCP_A3, type code %A, sha256 `b82ac7635cfdaa7b…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : AL ZN : VA : ! ~~~~ [AlZn-93Mey-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Mey-LB.tdb): HCP_A3, type code %A, sha256 `676cd7377477636f…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : AL ZN : VA : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/S0364-5916(01)00004-9](https://doi.org/10.1016/S0364-5916%2801%2900004-9) M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Calphad, 24, 253-84(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0364-5916(93)90011-Y](https://doi.org/10.1016/0364-5916%2893%2990011-Y) S.-L. Chen, Y.A. Chang, Calphad, 17, 113-24(1993). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.calphad.2019.101723](https://doi.org/10.1016/j.calphad.2019.101723) Alan Dinsdale, Ondrej Zobac, Ales Kroupa, Alexandra Khvan, Use of third generation data for the elements to model the thermodynamics of binary alloy systems: Part 1 – The critical assessment of data for the Al-Zn system, Calphad 68, 101723 (2020). _assessment that models this phase_ - [doi:10.1016/0001-6160(67)90153-8](https://doi.org/10.1016/0001-6160%2867%2990153-8) L.E Larsson, Pre-precipitation and precipitation phenomena in the Al-Zn system, Acta Metallurgica 15, 35-44 (1967). _cited as the source of values for this phase_ - [doi:10.1039/ct8977100383](https://doi.org/10.1039/ct8977100383) Charles Thomas Heycock, Francis Henry Neville, XXXIX.—The freezing points of alloys containing zinc and another metal, J. Chem. Soc., Trans. 71, 383-422 (1897). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-1936-281-1269](https://doi.org/10.1515/ijmr-1936-281-1269) Hermann Auer, Karl Ernst Mann, Magnetische Untersuchung des Systems Zink-Aluminium, International Journal of Materials Research 28, 323-328 (1936). _cited as the source of values for this phase_ ## LIQUID (Al–Zn) - Id: `phase:al-zn:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 653.07–2500 K, x(Zn) 0–1 - Literature: 17 values (17 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-zn:liquid) Names (8): _corpus: _corpus:phase:al-zn:liquid _paper: _paper:10.1016/0364-5916(93)90011-y:L, paper:10.1016/s0364-5916(01)00004-9:liq. _tdb: _tdb:AlZn-00Mat.tdb:LIQUID, tdb:AlZn-20Din-3g.tdb:LIQUID, tdb:AlZn-86Mey.tdb:LIQUID, tdb:AlZn-93Che.tdb:LIQUID, tdb:AlZn-93Mey-LB.tdb:LIQUID ### TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written [AlZn-00Mat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-00Mat.tdb): LIQUID, type code %, sha256 `c396f22f72e3f305…` ~~~~text 23: PHASE LIQUID:L % 1 1 ! 24: CONST LIQUID:L : AL ZN : ! ~~~~ [AlZn-20Din-3g.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-20Din-3g.tdb): LIQUID, type code %, sha256 `d660148fb562e023…` ~~~~text 23: PHASE LIQUID:L % 1 1 ! 24: CONST LIQUID:L : AL ZN : ! ~~~~ [AlZn-86Mey.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-86Mey.tdb): LIQUID, type code %, sha256 `e4f6db4a389e402f…` ~~~~text 26: PHASE LIQUID:L % 1 1 ! 27: CONST LIQUID:L : AL ZN : ! ~~~~ [AlZn-93Che.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Che.tdb): LIQUID, type code %, sha256 `b82ac7635cfdaa7b…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : AL ZN : ! ~~~~ [AlZn-93Mey-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlZn-93Mey-LB.tdb): LIQUID, type code %, sha256 `676cd7377477636f…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : AL ZN : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/S0364-5916(01)00004-9](https://doi.org/10.1016/S0364-5916%2801%2900004-9) M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Calphad, 24, 253-84(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0364-5916(93)90011-Y](https://doi.org/10.1016/0364-5916%2893%2990011-Y) S.-L. Chen, Y.A. Chang, Calphad, 17, 113-24(1993). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.calphad.2019.101723](https://doi.org/10.1016/j.calphad.2019.101723) Alan Dinsdale, Ondrej Zobac, Ales Kroupa, Alexandra Khvan, Use of third generation data for the elements to model the thermodynamics of binary alloy systems: Part 1 – The critical assessment of data for the Al-Zn system, Calphad 68, 101723 (2020). _assessment that models this phase_ - [doi:10.1039/ct8977100383](https://doi.org/10.1039/ct8977100383) Charles Thomas Heycock, Francis Henry Neville, XXXIX.—The freezing points of alloys containing zinc and another metal, J. Chem. Soc., Trans. 71, 383-422 (1897). _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).