Al–Zn system

47 accepted literature values from 3 paper(s) (experimental 17, model 30); 5 calculated phase diagram(s). 12 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (4) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	17
model	30

Accepted values by property group
Property group	Values
invariant reaction	40
phase transition	7

Calculated phase diagrams

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

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
AlZn-00Mat.tdb	M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Calphad, 24, 253-84(2000). doi:10.1016/S0364-5916(01)00004-9	`c396f22f72e3f3051d03dc41654dbd35f9cc8d1bce9928b4f1aed7c507012e01`	viewer · TDB · JSON
AlZn-20Din-3g.tdb	A. Dinsdale, O. Zobac, A. Kroupa, A. Khvan, Calphad, 68, 101723(2020). doi:10.1016/j.calphad.2019.101723	`d660148fb562e02388404d54d9c2a6ab97b282e07e468f95b8be9e8abdbf7657`	viewer · TDB · JSON
AlZn-86Mey.tdb	S. an Mey, G. Effenberg, Z. Metallkd., 77, 449-53(1986).	`e4f6db4a389e402fe4b0ffebcb048bc0306f0f452edf23adf0b9c4c15130f481`	viewer · TDB · JSON
AlZn-93Che.tdb	S.-L. Chen, Y.A. Chang, Calphad, 17, 113-24(1993). doi:10.1016/0364-5916(93)90011-Y	`b82ac7635cfdaa7b02405fddcf6c211885f22b018f2eea27665a3131b796ffe0`	viewer · TDB · JSON
AlZn-93Mey-LB.tdb	S. an Mey, Z. Metallkd., 84, 451-55(1993).	`676cd7377477636fa4715ce4148d7b9bcd3290762ce5b0b9d4fdd8c7570f00c5`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlZn-00Mat.tdb	655.13	FCC_A1 (x(Zn) 0.66987) + LIQUID (x(Zn) 0.8816) + HCP_A3 (x(Zn) 0.96556)
AlZn-00Mat.tdb	551.9	FCC_A1#2 (x(Zn) 0.14293) + FCC_A1 (x(Zn) 0.58826) + HCP_A3 (x(Zn) 0.98141)
AlZn-20Din-3g.tdb	653.07	FCC_A1 (x(Zn) 0.66951) + LIQUID (x(Zn) 0.87988) + HCP_A3 (x(Zn) 0.96561)
AlZn-20Din-3g.tdb	548.86	FCC_A1#2 (x(Zn) 0.14518) + FCC_A1 (x(Zn) 0.58623) + HCP_A3 (x(Zn) 0.98159)
AlZn-86Mey.tdb	656.9	FCC_A1 (x(Zn) 0.74215) + LIQUID (x(Zn) 0.87221) + HCP_A3 (x(Zn) 0.94777)
AlZn-86Mey.tdb	554.96	FCC_A1#2 (x(Zn) 0.16616) + FCC_A1 (x(Zn) 0.60379) + HCP_A3 (x(Zn) 0.96529)
AlZn-93Che.tdb	655.18	FCC_A1 (x(Zn) 0.66713) + LIQUID (x(Zn) 0.88917) + HCP_A3 (x(Zn) 0.97529)
AlZn-93Che.tdb	550.72	FCC_A1#2 (x(Zn) 0.14513) + FCC_A1 (x(Zn) 0.5917) + HCP_A3 (x(Zn) 0.98456)
AlZn-93Mey-LB.tdb	653.99	FCC_A1 (x(Zn) 0.6731) + LIQUID (x(Zn) 0.88351) + HCP_A3 (x(Zn) 0.9691)
AlZn-93Mey-LB.tdb	550.39	FCC_A1#2 (x(Zn) 0.1412) + FCC_A1 (x(Zn) 0.59047) + HCP_A3 (x(Zn) 0.984)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlZn-00Mat · CALPHAD hull AlZn-86Mey · CALPHAD hull AlZn-93Che · CALPHAD hull AlZn-93Mey-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Zn system (40)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
658	eutectic: liq. <-> hcp sol. +fcc sol.	fcc': Zn 0.67	experimental	[1] Mathon 2000 cites Ellwood 1952	Table 5, p. 15, row 3 report
656.9	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.872; fcc': Zn 0.742; hcp: Zn 0.948	model	[1] Mathon 2000 cites I W 1950	Table 5, p. 15, row 12 report
656.9	L = fcc + hcp	L: Zn 0.872; fcc: Zn 0.742; hcp: Zn 0.948	model	[2] Chen 1993 cites ref. 86Mey	Table 3, p. 4, row 2 report
656	eutectic: liq. <-> hcp sol. +fcc sol.		experimental	[1] Mathon 2000 cites Aragon 1995	Table 5, p. 15, row 1 report
655.1	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.882; fcc': Zn 0.67; hcp: Zn 0.966	model	[1] Mathon 2000	Table 5, p. 15, row 8 report
655	eutectic: liq. <-> hcp sol. +fcc sol.		experimental	[1] Mathon 2000 cites Gayler 1938	Table 5, p. 15, row 5 report
655	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.8526	experimental	[1] Mathon 2000 cites Morinaga 1940	Table 5, p. 15, row 6 report
654.8	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.888; fcc': Zn 0.667; hcp: Zn 0.972	model	[1] Mathon 2000 cites ref. 8	Table 5, p. 15, row 14 report
654.8	L = fcc + hcp	L: Zn 0.888; fcc: Zn 0.667; hcp: Zn 0.975	model	[2] Chen 1993	Table 3, p. 4, row 3 report
654.1	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.884; fcc': Zn 0.673; hcp: Zn 0.969	model	[1] Mathon 2000 cites ref. 7	Table 5, p. 15, row 13 report
654	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.887; fcc': Zn 0.67; hcp: Zn 0.972	model	[1] Mathon 2000 cites Murray 1996	Table 5, p. 15, row 9 report
654	L = fcc + hcp	L: Zn 0.887; fcc: Zn 0.67; hcp: Zn 0.972	model	[2] Chen 1993 cites ref. 83Mur	Table 3, p. 4, row 1 report
654	eutectic: Liquid -> fcc-A1 + hcp-A3	L: Zn 0.884; fcc-A1: Zn 0.673; hcp-A3: Zn 0.969	model	[3] (ed.) 1998	Table I, p. 127, row 1 report
653.7	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.87; fcc': Zn 0.734; hcp: Zn 0.975	model	[1] Mathon 2000	Table 5, p. 15, row 11 report
653.6	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.877	experimental	[1] Mathon 2000 cites Heycock 1897 doi	Table 5, p. 15, row 7 report
653	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.8869; hcp: Zn 0.971	experimental	[1] Mathon 2000 cites Pelzel 1943	Table 5, p. 15, row 4 report
651.6	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.886; fcc': Zn 0.745; hcp: Zn 0.977	model	[1] Mathon 2000	Table 5, p. 15, row 10 report
651	eutectic: liq. <-> hcp sol. +fcc sol.	liq.: Zn 0.9	experimental	[1] Mathon 2000 cites Velisek 1975	Table 5, p. 15, row 2 report
624.5	fcc = fcc1 + fcc2	fcc: Zn 0.395	model	[2] Chen 1993 cites ref. 83Mur	Table 3, p. 4, row 7 report
622.3	fcc = fcc1 + fcc2	fcc: Zn 0.344	model	[2] Chen 1993	Table 3, p. 4, row 9 report
611.2	fcc = fcc1 + fcc2	fcc: Zn 0.362	model	[2] Chen 1993 cites ref. 86Mey	Table 3, p. 4, row 8 report
556	fcc + fcc' + hcp		experimental	[1] Mathon 2000 cites Morinaga 1940	Table 5, p. 16, row 1 report
555	fcc2 = fcc1 + hcp	fcc2: Zn 0.604; fcc1: Zn 0.166; hcp: Zn 0.965	model	[2] Chen 1993 cites ref. 86Mey	Table 3, p. 4, row 5 report
555	fcc + fcc' + hcp	fcc: Zn 0.166; fcc': Zn 0.604; hcp: Zn 0.965	model	[1] Mathon 2000 cites I W 1950	Table 5, p. 16, row 7 report
555	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Aragon 1995	Table 5, p. 15, row 15 report
553	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Larsson 1967 doi	Table 5, p. 15, row 18 report
552	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Jardet 1998	Table 5, p. 15, row 16 report
551.9	fcc + fcc' + hcp	fcc: Zn 0.143; fcc': Zn 0.588; hcp: Zn 0.981	model	[1] Mathon 2000	Table 5, p. 16, row 3 report
550.7	fcc2 = fcc1 + hcp	fcc2: Zn 0.592; fcc1: Zn 0.145; hcp: Zn 0.985	model	[2] Chen 1993	Table 3, p. 4, row 6 report
550.7	fcc + fcc' + hcp	fcc: Zn 0.145; fcc': Zn 0.592; hcp: Zn 0.985	model	[1] Mathon 2000 cites ref. 8	Table 5, p. 16, row 9 report
550.4	fcc + fcc' + hcp	fcc: Zn 0.141; fcc': Zn 0.59; hcp: Zn 0.984	model	[1] Mathon 2000 cites ref. 7	Table 5, p. 16, row 8 report
550.4	monotectic: fcc-A1' -> fcc-A1" + hcp-A3	fcc-A1': Zn 0.59; fcc-A1": Zn 0.141; hcp-A3: Zn 0.984	model	[3] (ed.) 1998	Table I, p. 127, row 2 report
550	fcc2 = fcc1 + hcp	fcc2: Zn 0.59; fcc1: Zn 0.165; hcp: Zn 0.984	model	[2] Chen 1993 cites ref. 83Mur	Table 3, p. 4, row 4 report
550	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Borelius 1948	Table 5, p. 15, row 20 report
550	fcc + fcc' + hcp	fcc: Zn 0.165; fcc': Zn 0.59; hcp: Zn 0.984	model	[1] Mathon 2000 cites Murray 1996	Table 5, p. 16, row 4 report
550	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.	fcc: Zn 0.165; fcc': Zn 0.6	experimental	[1] Mathon 2000 cites Ellwood 1952	Table 5, p. 15, row 19 report
548	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Vincent 1982	Table 5, p. 15, row 17 report
546.3	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Gayler 1938	Table 5, p. 15, row 28 report
543	fcc + fcc' + hcp	hcp: Zn 0.985	experimental	[1] Mathon 2000 cites Auer 1936 doi	Table 5, p. 16, row 2 report
522	monotectoid: fcc sol. <-> fcc' sol. + hcp sol.		experimental	[1] Mathon 2000 cites Gayler 1938	Table 5, p. 15, row 21 report

Other properties

Phase transition (7)

Phase transition, Al–Zn system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	610.9 K	610.9	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.358	model	[1] Mathon 2000	Table 5, p. 16, row 12 report
Phase transition	611.2 K	611.2	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.362	model	[1] Mathon 2000 cites I W 1950	Table 5, p. 16, row 14 report
Phase transition	622.3 K	622.3	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.344	model	[1] Mathon 2000 cites ref. 8	Table 5, p. 16, row 16 report
Phase transition	624.5 K	624.5	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.395	model	[1] Mathon 2000 cites Murray 1996	Table 5, p. 16, row 11 report
Phase transition	625.7 K	625.7	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.35	model	[1] Mathon 2000 cites ref. 7	Table 5, p. 16, row 15 report
Phase transition	625.8 K	625.8	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.35	model	[1] Mathon 2000	Table 5, p. 16, row 10 report
Phase transition	630.5 K	630.5	critical point: fcc sol. <-> fcc sol. + fcc' sol. fcc' sol.: Zn 0.364	model	[1] Mathon 2000	Table 5, p. 16, row 13 report

Sources

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

M. Mathon, K. Jardet, E. Aragon, P. Satre, A. Sebaoun, Al-Ga-Zn System: Reassessments of the Three Binary Systems and Discussion on Possible Estimations and on Optimisation of the Ternary System, Calphad 24, 253-284 (2000). doi:10.1016/s0364-5916(01)00004-9
Shuang-Lin Chen, Y.A. Chang, A thermodynamic analysis of the AlZn system and phase diagram calculation, Calphad 17, 113-124 (1993). doi:10.1016/0364-5916(93)90011-y
I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

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

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

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