Al–Cu–Er system

53 accepted literature values from 1 paper(s) (model 29, unspecified 24); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
model	29
unspecified	24

Accepted values by property group
Property group	Values
invariant reaction	29
crystal structure	24

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Cu–Er system (29)
T (K)	Reaction / phases	Class	Source	Location
1736.02	quasi-peritectic: Liquid + τ3 -> τ6 + τ4	model	[1] Zhang 2008	Table 4, p. 7, row 15 report
1561.23	quasi-peritectic: Liquid + τ4 -> Al2Er + τ6	model	[1] Zhang 2008	Table 4, p. 7, row 11 report
1537.62	quasi-peritectic: Liquid + τ6 -> τ3 + τ7	model	[1] Zhang 2008	Table 4, p. 7, row 16 report
1415.02	quasi-peritectic: Liquid + τ6 -> τ7 + Al2Er	model	[1] Zhang 2008	Table 4, p. 7, row 10 report
1405.71	quasi-peritectic: Liquid + τ4 -> τ3 + Al2Er	model	[1] Zhang 2008	Table 4, p. 7, row 12 report
1296.34	quasi-peritectic: Liquid + Al2Er -> AlEr + τ7	model	[1] Zhang 2008	Table 4, p. 7, row 9 report
1282.15	quasi-peritectic: Liquid + τ7 -> AlEr + CuEr	model	[1] Zhang 2008	Table 4, p. 7, row 8 report
1277.95	eutectic: Liquid -> CuEr + Al2Er3 + AlEr	model	[1] Zhang 2008	Table 4, p. 7, row 2 report
1250.13	quasi-peritectic: Liquid + τ2 -> γ + τ3	model	[1] Zhang 2008	Table 4, p. 7, row 22 report
1249.71	quasi-peritectic: Liquid + γ -> β + τ3	model	[1] Zhang 2008	Table 4, p. 7, row 21 report
1246.96	quasi-peritectic: Liquid + Al2Er3 -> CuEr + AlEr2	model	[1] Zhang 2008	Table 4, p. 7, row 7 report
1227.54	quasi-peritectic: Liquid + Al2Er -> τ3 + L12	model	[1] Zhang 2008	Table 4, p. 7, row 13 report
1219.56	quasi-peritectic: Liquid + γ -> β + τ2	model	[1] Zhang 2008	Table 4, p. 7, row 23 report
1162.55	quasi-peritectic: Liquid + β -> τ3 + Fcc_Cu	model	[1] Zhang 2008	Table 4, p. 7, row 20 report
1156.3	eutectic: Liquid -> CuEr + AlEr2 + Hcp_Er	model	[1] Zhang 2008	Table 4, p. 7, row 1 report
1132.73	quasi-peritectic: Liquid + Cu9Er2 -> τ3 + Cu5Er	model	[1] Zhang 2008	Table 4, p. 7, row 19 report
1124.05	quasi-peritectic: Liquid + β -> τ2 + ε	model	[1] Zhang 2008	Table 4, p. 7, row 24 report
1123.37	quasi-peritectic: Liquid + τ2 -> τ1 + ε	model	[1] Zhang 2008	Table 4, p. 7, row 25 report
1116.45	quasi-peritectic: Liquid + Cu7Er2 -> Cu9Er2 + Cu2Er	model	[1] Zhang 2008	Table 4, p. 7, row 18 report
1088.91	quasi-peritectic: Liquid + CuEr -> Cu2Er + τ7	model	[1] Zhang 2008	Table 4, p. 7, row 17 report
1088.65	eutectic: Liquid -> Cu2Er + τ3 + τ7	model	[1] Zhang 2008	Table 4, p. 7, row 4 report
1084.67	eutectic: Liquid -> Fcc_Cu + Cu5Er + τ3	model	[1] Zhang 2008	Table 4, p. 7, row 6 report
1078.38	eutectic: Liquid -> Cu2Er + τ3 + Cu9Er2	model	[1] Zhang 2008	Table 4, p. 7, row 5 report
916.78	peritectic: Liquid + τ1 + τ2 -> Fcc_Al	model	[1] Zhang 2008	Table 4, p. 7, row 27 report
915.82	quasi-peritectic: Liquid + τ2 -> τ3 + L12	model	[1] Zhang 2008	Table 4, p. 7, row 14 report
915.39	eutectic: Liquid -> L12 + τ3 + Fcc_Al	model	[1] Zhang 2008	Table 4, p. 7, row 3 report
898.11	peritectic: Liquid + ε + τ1 -> η	model	[1] Zhang 2008	Table 4, p. 7, row 28 report
868.85	peritectic: Liquid + η + τ1 -> θ	model	[1] Zhang 2008	Table 4, p. 7, row 29 report
820.61	quasi-peritectic: Liquid + τ1 -> θ + Fcc_Al	model	[1] Zhang 2008	Table 4, p. 7, row 26 report

Other properties

Crystal structure (24)

Crystal structure, Al–Cu–Er system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	2.946 Å		β	unspecified	[1] Zhang 2008	Table 1, p. 3, row 7 report
Lattice a	4.214 Å	298.15	L12	unspecified	[1] Zhang 2008	Table 1, p. 3, row 8 report
Lattice a	8.7023 Å	298.15	γD83	unspecified	[1] Zhang 2008	Table 1, p. 3, row 5 report
Lattice a	4.146 Å	298.15	ε	unspecified	[1] Zhang 2008	Table 1, p. 3, row 4 report
Lattice a	4.0972 Å	298.15	ζ	unspecified	[1] Zhang 2008	Table 1, p. 3, row 3 report
Lattice a	12.066 Å	298.15	η	unspecified	[1] Zhang 2008	Table 1, p. 3, row 2 report
Lattice a	6.067 Å	298.15	θ	unspecified	[1] Zhang 2008	Table 1, p. 3, row 1 report
Lattice a	8.712 Å	298.15	τ1-Al8Cu4Er alloy: Cu 0.307692, Er 0.076923	unspecified	[1] Zhang 2008	Table 1, p. 3, row 18 report
Lattice a	8.63 Å	298.15	τ2-(Al, Cu)17Er2 alloy: Cu 0.25, Er 0.5	unspecified	[1] Zhang 2008	Table 1, p. 3, row 19 report
Lattice a	5.029 Å	298.15	τ3-(Al, Cu)5Er alloy: Cu 0.333333, Er 0.333333	unspecified	[1] Zhang 2008	Table 1, p. 3, row 20 report
Lattice a	4.184 Å	298.15	τ4-Al3CuEr alloy: Cu 0.2, Er 0.2	unspecified	[1] Zhang 2008	Table 1, p. 3, row 21 report
Lattice a	6.975 Å	298.15	τ7-AlCuEr alloy: Cu 0.333333, Er 0.333333	unspecified	[1] Zhang 2008	Table 1, p. 3, row 24 report
Lattice b	7.1313 Å	298.15	ζ	unspecified	[1] Zhang 2008	Table 1, p. 3, row 3 report
Lattice b	4.105 Å	298.15	η	unspecified	[1] Zhang 2008	Table 1, p. 3, row 2 report
Lattice b	4.112 Å	298.15	τ4-Al3CuEr alloy: Cu 0.2, Er 0.2	unspecified	[1] Zhang 2008	Table 1, p. 3, row 21 report
Lattice c	5.063 Å	298.15	ε	unspecified	[1] Zhang 2008	Table 1, p. 3, row 4 report
Lattice c	9.9793 Å	298.15	ζ	unspecified	[1] Zhang 2008	Table 1, p. 3, row 3 report
Lattice c	6.913 Å	298.15	η	unspecified	[1] Zhang 2008	Table 1, p. 3, row 2 report
Lattice c	4.877 Å	298.15	θ	unspecified	[1] Zhang 2008	Table 1, p. 3, row 1 report
Lattice c	5.13 Å	298.15	τ1-Al8Cu4Er alloy: Cu 0.307692, Er 0.076923	unspecified	[1] Zhang 2008	Table 1, p. 3, row 18 report
Lattice c	5.029 Å	298.15	τ2-(Al, Cu)17Er2 alloy: Cu 0.25, Er 0.5	unspecified	[1] Zhang 2008	Table 1, p. 3, row 19 report
Lattice c	4.139 Å	298.15	τ3-(Al, Cu)5Er alloy: Cu 0.333333, Er 0.333333	unspecified	[1] Zhang 2008	Table 1, p. 3, row 20 report
Lattice c	9.773 Å	298.15	τ4-Al3CuEr alloy: Cu 0.2, Er 0.2	unspecified	[1] Zhang 2008	Table 1, p. 3, row 21 report
Lattice c	4.003 Å	298.15	τ7-AlCuEr alloy: Cu 0.333333, Er 0.333333	unspecified	[1] Zhang 2008	Table 1, p. 3, row 24 report

Sources

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

L.G. Zhang, L.B. Liu, G.X. Huang, H.Y. Qi, B.R. Jia, Z.P. Jin, Thermodynamic assessment of the Al–Cu–Er system, Calphad 32, 527-534 (2008). doi:10.1016/j.calphad.2008.05.002

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 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_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}
}