Al–Sc–Zr system

86 accepted literature values from 1 paper(s) (experimental 38, model 48); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	38
model	48

Accepted values by property group
Property group	Values
invariant reaction	66
phase equilibrium	20

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Sc–Zr system (66)
T (K)	Reaction / phases	Class	Source	Location
2156.15	quasi-peritectic: Liquid + Al2Sc -> Al2Zr + Al3Zr2	model	[1] Bo 2017	Table 5, p. 11, row 1 report
2121.15	quasi-peritectic: Liquid + Al2Sc -> τ2 + Al2Zr	model	[1] Bo 2017	Table 5, p. 11, row 2 report
1989.15	quasi-peritectic: Liquid + Al2Sc -> τ2 + τ1	model	[1] Bo 2017	Table 5, p. 11, row 3 report
1827.15	quasi-peritectic: Liquid + Al3Zr2 -> Al2Sc + AlSc	model	[1] Bo 2017	Table 5, p. 11, row 4 report
1814.15	quasi-peritectic: Liquid + Al3Zr -> τ2 + Al3Zr	model	[1] Bo 2017	Table 5, p. 11, row 5 report
1793.15	quasi-peritectic: Liquid + Al3Zr2 -> AlSc + Al3Zr4	model	[1] Bo 2017	Table 5, p. 11, row 6 report
1784.15	eutectic: Liquid -> Al3Zr4 + Al4Zr5 + Al3Zr2	model	[1] Bo 2017	Table 5, p. 11, row 8 report
1784.15	eutectic: Liquid -> Al3Zr4 + Al2Zr3 + Al4Zr5	model	[1] Bo 2017	Table 5, p. 11, row 7 report
1744.15	quasi-peritectic: Liquid + Al3Zr4 -> AlSc + Al2Zr3	model	[1] Bo 2017	Table 5, p. 11, row 9 report
1631.15	peritectic: Liquid + τ1 + Al2Sc -> Al3Sc	model	[1] Bo 2017	Table 5, p. 11, row 10 report
1631.15	other: Liquid + τ1 + Al2Sc ↔ Al3Sc	model	[1] Bo 2017	Table 3, p. 8, row 9 report
1612.15	eutectic: Liquid -> Al2Zr3 + bcc_A2 + Al3Zr5	model	[1] Bo 2017	Table 5, p. 11, row 11 report
1608.15	peritectic: Liquid + AlSc + Al2Zr3 -> Al(Sc,Zr)2	model	[1] Bo 2017	Table 5, p. 11, row 12 report
1607.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + bcc_A2	model	[1] Bo 2017	Table 3, p. 8, row 30 report
1606.15	Liquid + Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2	model	[1] Bo 2017	Table 3, p. 8, row 32 report
1606.15	AlSc + Al2Zr3/AlSc + Al2Zr3 + Al3Zr4	model	[1] Bo 2017	Table 3, p. 8, row 13 report
1602.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + bcc_A2	experimental	[1] Bo 2017	Table 3, p. 8, row 29 report
1600.15	other: Liquid + τ1 + Al2Sc ↔ Al3Sc	experimental	[1] Bo 2017	Table 3, p. 8, row 8 report
1594.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 17 report
1587.15	Liquid + Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2	experimental	[1] Bo 2017	Table 3, p. 8, row 31 report
1582.15	Liquid + Al2Zr3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 19 report
1573.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + bcc_A2	experimental	[1] Bo 2017	Table 3, p. 8, row 20 report
1570.15	AlSc + Al2Zr3/AlSc + Al2Zr3 + Al3Zr4	experimental	[1] Bo 2017	Table 3, p. 8, row 12 report
1558.15	Liquid + bcc_A2/Liquid + bcc_A2 + Al2Zr3	model	[1] Bo 2017	Table 3, p. 8, row 40 report
1553.15	Liquid + bcc_A2 + Al2Zr3/bcc_A2 + Al2Zr3	model	[1] Bo 2017	Table 3, p. 8, row 41 report
1546.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + bcc_A2	model	[1] Bo 2017	Table 3, p. 8, row 21 report
1541.15	Liquid + Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2	model	[1] Bo 2017	Table 3, p. 8, row 23 report
1540.15	Liquid + Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2	experimental	[1] Bo 2017	Table 3, p. 8, row 22 report
1540.15	Liquid + Al2Zr3/Liquid + Al2Zr3 + Al(Sc,Zr)2	experimental	[1] Bo 2017	Table 3, p. 8, row 16 report
1525.15	Liquid + Al2Zr3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	experimental	[1] Bo 2017	Table 3, p. 8, row 18 report
1509.15	quasi-peritectic: Liquid + Al2Zr3 -> Al(Sc,Zr)2 + bcc_A2	model	[1] Bo 2017	Table 5, p. 11, row 13 report
1422.15	AlSc + Al2Zr3 + Al3Zr4/Al2Zr3 + Al3Zr4	experimental	[1] Bo 2017	Table 3, p. 8, row 14 report
1401.15	Liquid + τ1/Liquid + τ1 + Al3Sc	model	[1] Bo 2017	Table 3, p. 8, row 1 report
1391.15	AlSc + Al2Zr3 + Al3Zr4/Al2Zr3 + Al3Zr4	model	[1] Bo 2017	Table 3, p. 8, row 15 report
1348.15	Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 24 report
1347.15	Al2Zr3 + bcc_A2 + hcp_A3/Al2Zr3 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 25 report
1337.15	bcc_A2 + Al2Zr3/bcc_A2 + Al2Zr3 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 42 report
1334.15	bcc_A2 + Al2Zr3 + hcp_A3/Al2Zr3 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 44 report
1318.15	Al2Zr3 + bcc_A2/Al2Zr3 + bcc_A2 + AlZr3	model	[1] Bo 2017	Table 3, p. 8, row 33 report
1305.15	bcc_A2 + Al2Zr3/bcc_A2 + Al2Zr3 + AlZr3	model	[1] Bo 2017	Table 3, p. 8, row 51 report
1304.15	Al2Zr3 + bcc_A2 + AlZr3/Al2Zr3 + AlZr3	model	[1] Bo 2017	Table 3, p. 8, row 34 report
1292.15	bcc_A2 + Al2Zr3 + hcp_A3/Al2Zr3 + hcp_A3	experimental	[1] Bo 2017	Table 3, p. 8, row 43 report
1290.15	bcc_A2 + Al2Zr3 + AlZr3/bcc_A2 + AlZr3	model	[1] Bo 2017	Table 3, p. 8, row 53 report
1279.15	bcc_A2 + Al2Zr3 + AlZr3/bcc_A2 + AlZr3	experimental	[1] Bo 2017	Table 3, p. 8, row 52 report
1254.15	bcc_A2 + AlZr3/bcc_A2 + AlZr3 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 54 report
1248.15	bcc_A2 + AlZr3 + hcp_A3/AlZr3 + hcp_A3	model	[1] Bo 2017	Table 3, p. 8, row 56 report
1245.15	Al2Zr3 + hcp_A3/Al2Zr3 + hcp_A3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 26 report
1231.15	Al2Zr3 + AlZr3/Al2Zr3 + AlZr3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 35 report
1222.15	bcc_A2 + AlZr3 + hcp_A3/AlZr3 + hcp_A3	experimental	[1] Bo 2017	Table 3, p. 8, row 55 report
1220.15	Al2Zr3 + AlZr3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 37 report
1207.15	Al2Zr3 + hcp_A3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 28 report
1192.15	Al2Zr3 + hcp_A3/Al2Zr3 + hcp_A3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 45 report
1189.15	Al2Zr3 + hcp_A3 + Al(Sc,Zr)2/hcp_A3 + Al(Sc,Zr)2	model	[1] Bo 2017	Table 3, p. 8, row 47 report
1187.15	Al2Zr3 + hcp_A3 + Al(Sc,Zr)2/hcp_A3 + Al(Sc,Zr)2	experimental	[1] Bo 2017	Table 3, p. 8, row 46 report
1182.15	Al2Zr3 + AlZr3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	experimental	[1] Bo 2017	Table 3, p. 8, row 36 report
1182.15	Al2Zr3 + hcp_A3 + Al(Sc,Zr)2/Al2Zr3 + Al(Sc,Zr)2	experimental	[1] Bo 2017	Table 3, p. 8, row 27 report
1180.15	τ1 + Al2Sc + Al3Sc/Al2Sc + Al3Sc	experimental	[1] Bo 2017	Table 3, p. 8, row 10 report
1172.15	τ1 + Al2Sc + Al3Sc/Al2Sc + Al3Sc	model	[1] Bo 2017	Table 3, p. 8, row 11 report
934.15	other: Liquid + Al3Zr ↔ τ2 + fcc_A1	model	[1] Bo 2017	Table 3, p. 8, row 5 report
934.15	quasi-peritectic: Liquid + Al3Zr -> τ2 + fcc_A1	model	[1] Bo 2017	Table 5, p. 11, row 14 report
933.15	quasi-peritectic: Liquid + τ2 -> τ1 + fcc_A1	model	[1] Bo 2017	Table 5, p. 11, row 15 report
933.15	other: Liquid + τ1 ↔ fcc_A1 + Al3Sc	model	[1] Bo 2017	Table 3, p. 8, row 3 report
933.15	quasi-peritectic: Liquid + τ1 -> fcc_A1 + Al3Sc	model	[1] Bo 2017	Table 5, p. 11, row 16 report
923.15	other: Liquid + τ1 ↔ fcc_A1 + Al3Sc	experimental	[1] Bo 2017	Table 3, p. 8, row 2 report
923.15	other: Liquid + Al3Zr ↔ τ2 + fcc_A1	experimental	[1] Bo 2017	Table 3, p. 8, row 6 report
902.15	hcp_A3 + Al(Sc,Zr)2/hcp_A3 + Al(Sc,Zr)2 + AlZr3	model	[1] Bo 2017	Table 3, p. 8, row 48 report

Other properties

Phase equilibrium (20)

Phase equilibrium, Al–Sc–Zr system
Property	Phases / composition	Class	Source	Location
Phase composition	Al2Sc + Al2Zr Al2Sc: Al 0.649, Sc 0.093, Zr 0.258; Al2Zr: Al 0.64, Sc 0.043, Zr 0.317	experimental	[1] Bo 2017	Table 2, p. 4, row 8 report
Phase composition	Al2Sc + AlSc Al2Sc: Al 0.676, Sc 0.264, Zr 0.06; AlSc: Al 0.523, Sc 0.464, Zr 0.013	experimental	[1] Bo 2017	Table 2, p. 4, row 9 report
Phase composition	Al2Zr3 + AlZr2 Al2Zr3: Al 0.403, Sc 0.177, Zr 0.42; AlZr2: Al 0.366, Sc 0.306, Zr 0.328	experimental	[1] Bo 2017	Table 2, p. 4, row 16 report
Phase composition	Al2Zr3 + AlZr2 Al2Zr3: Al 0.394, Sc 0.035, Zr 0.571; AlZr2: Al 0.332, Sc 0.061, Zr 0.607	experimental	[1] Bo 2017	Table 2, p. 4, row 18 report
Phase composition	Al2Zr3 + AlZr2 Al2Zr3: Al 0.397, Sc 0.109, Zr 0.494; AlZr2: Al 0.338, Sc 0.184, Zr 0.478	experimental	[1] Bo 2017	Table 2, p. 4, row 17 report
Phase composition	Al3Sc + Al2Sc Al3Sc: Al 0.757, Sc 0.192, Zr 0.051; Al2Sc: Al 0.676, Sc 0.236, Zr 0.088	experimental	[1] Bo 2017	Table 2, p. 4, row 4 report
Phase composition	Al3Sc + τ1 + Al2Sc Al3Sc: Al 0.756, Sc 0.195, Zr 0.049; τ1: Al 0.746, Sc 0.152, Zr 0.102; Al2Sc: Al 0.659, Sc 0.207, Zr 0.134	experimental	[1] Bo 2017	Table 2, p. 4, row 5 report
Phase composition	Al3Zr2 + AlSc Al3Zr2: Al 0.588, Sc 0.253, Zr 0.159; AlSc: Al 0.493, Sc 0.433, Zr 0.074	experimental	[1] Bo 2017	Table 2, p. 4, row 10 report
Phase composition	Al3Zr2 + AlSc Al3Zr2: Al 0.581, Sc 0.244, Zr 0.175; AlSc: Al 0.5, Sc 0.408, Zr 0.092	experimental	[1] Bo 2017	Table 2, p. 4, row 11 report
Phase composition	Al3Zr2 + AlZr Al3Zr2: Al 0.569, Sc 0.132, Zr 0.299; AlZr: Al 0.499, Sc 0.126, Zr 0.375	experimental	[1] Bo 2017	Table 2, p. 4, row 12 report
Phase composition	Al3Zr4 + Al2Zr3 Al3Zr4: Al 0.435, Sc 0.164, Zr 0.401; Al2Zr3: Al 0.41, Sc 0.27, Zr 0.32	experimental	[1] Bo 2017	Table 2, p. 4, row 14 report
Phase composition	Al3Zr4 + Al2Zr3 Al3Zr4: Al 0.435, Sc 0.095, Zr 0.47; Al2Zr3: Al 0.405, Sc 0.272, Zr 0.323	experimental	[1] Bo 2017	Table 2, p. 4, row 15 report
Phase composition	AlZr + Al3Zr4 AlZr: Al 0.486, Sc 0.041, Zr 0.473; Al3Zr4: Al 0.432, Sc 0.031, Zr 0.537	experimental	[1] Bo 2017	Table 2, p. 4, row 13 report
Phase composition	AlZr2 + AlZr3 + hcp_Zr AlZr2: Al 0.302, Sc 0.167, Zr 0.531; AlZr3: Al 0.239, Sc 0.143, Zr 0.618; hcp_Zr: Al 0.161, Sc 0.259, Zr 0.58	experimental	[1] Bo 2017	Table 2, p. 4, row 19 report
Phase composition	AlZr3 + hcp_Zr AlZr3: Al 0.222, Sc 0.048, Zr 0.73; hcp_Zr: Al 0.114, Sc 0.086, Zr 0.8	experimental	[1] Bo 2017	Table 2, p. 4, row 20 report
Phase composition	fcc_Al + Al3Sc + τ' + τ′ fcc_Al: Al 0.973, Sc 0.023, Zr 0.004; Al3Sc: Al 0.763, Sc 0.184, Zr 0.053; τ': Al 0.75, Sc 0.132, Zr 0.118; τ′: Al 0.75, Sc 0.132, Zr 0.118	experimental	[1] Bo 2017	Table 2, p. 4, row 1 report
Phase composition	fcc_Al + τ2 + Al3Zr fcc_Al: Al 0.992, Sc 0.004, Zr 0.004; τ2: Al 0.744, Sc 0.101, Zr 0.155; Al3Zr: Al 0.73, Sc 0.033, Zr 0.237	experimental	[1] Bo 2017	Table 2, p. 4, row 2 report
Phase composition	fcc_Al + τ2 + Al3Zr fcc_Al: Al 0.997, Sc 0.002, Zr 0.001; τ2: Al 0.75, Sc 0.109, Zr 0.141; Al3Zr: Al 0.734, Sc 0.02, Zr 0.246	experimental	[1] Bo 2017	Table 2, p. 4, row 3 report
Phase composition	τ1 + τ2 + Al2Sc τ1: Al 0.75, Sc 0.162, Zr 0.088; τ2: Al 0.746, Sc 0.106, Zr 0.148; Al2Sc: Al 0.659, Sc 0.161, Zr 0.18	experimental	[1] Bo 2017	Table 2, p. 4, row 6 report
Phase composition	τ2 + Al3Zr + Al2Sc τ2: Al 0.744, Sc 0.098, Zr 0.158; Al3Zr: Al 0.736, Sc 0.045, Zr 0.219; Al2Sc: Al 0.656, Sc 0.124, Zr 0.22	experimental	[1] Bo 2017	Table 2, p. 4, row 7 report

Sources

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

H. Bo, L.B. Liu, J.L. Hu, Z.P. Jin, Experimental study and thermodynamic modeling of the Al-Sc-Zr system, Computational Materials Science 133, 82-92 (2017). doi:10.1016/j.commatsci.2017.02.029

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}
}