Al–Y system

152 accepted literature values from 5 paper(s) (experimental 44, model 95, unspecified 13); 6 calculated phase diagram(s). 10 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 (13) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	44
model	95
unspecified	13

Accepted values by property group
Property group	Values
invariant reaction	105
phase transition	4
formation	12
crystal structure	31

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
AlY-06AlS.tdb	S. Al Shakshir, M. Medraj, J. Phase Equilib. Diffus., 27, 231-44(2006). doi:10.1361/154770306X109782	`1aee43313ab48fb78c7f76c2a9c21e6909bd5fa8bd868c84c08e648ddac3a1ae`	viewer · TDB · JSON
AlY-06Liu.tdb	S. Liu, Y. Du. H. Chen, Calphad, 30, 334-40(2006). doi:10.1016/j.calphad.2006.01.001	`a92ac2a7c8a36049ccfb111dab004fe88a983aaeebbec477f302348c406716b6`	viewer · TDB · JSON
AlY-15Hua.tdb	J. Huang, B. Yang, H. Chen, H. Wang, J. Phase Equilib. Diffus., 36, 357-65(2015). doi:10.1007/s11669-015-0390-6	`cf62f8b23dc00d6db89af494cdce457dcd9012f00584462f99e35237b54125ff`	viewer · TDB · JSON
AlY-18Hu.tdb	J.L. Hu, H. Bo, L.B. Liu, Z.P. Jin, Thermochim. Acta, 661, 147-59(2018). doi:10.1016/j.tca.2018.01.018	`0876f43dbe16233b9b6ac252a9dd90dfa8f3c8550b853631229207a5749244d3`	viewer · TDB · JSON
AlY-95Gro-LB.tdb	J. Groebner, H.L. Lukas, F. Aldinger, J. Alloys, Compd., 220, 8-14(1995). doi:10.1016/0925-8388(94)06028-2	`5a2e7289e9fb1d714490186484d072795e81c1002fbfe12235e21bd638b2a727`	viewer · TDB · JSON
AlY-98Luk.tdb	H.L. Lukas, COST 507, Final report round 2, 1998.	`aca03d391299be7367317bbc31208f51377ca2380f6cd2df653d9629c2cd652e`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlY-06AlS.tdb	1750.96	LIQUID (x(Y) 0.9779) + BCC_A2 (x(Y) 0.9992) + HCP_A3 (x(Y) 0.99924)
AlY-06AlS.tdb	1402.87	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.52149)
AlY-06AlS.tdb	1402.87	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.52142)
AlY-06AlS.tdb	1402.87	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.52154)
AlY-06AlS.tdb	1358.62	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.5726) + AL2Y3 (x(Y) 0.6)
AlY-06AlS.tdb	1358.62	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57263) + AL2Y3 (x(Y) 0.6)
AlY-06AlS.tdb	1358.62	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57239) + AL2Y3 (x(Y) 0.6)
AlY-06AlS.tdb	1257.21	LIQUID (x(Y) 0.112) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-06AlS.tdb	1257.21	LIQUID (x(Y) 0.11204) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-06AlS.tdb	1257.09	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.7269)
AlY-06AlS.tdb	1257.08	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.72728)
AlY-06AlS.tdb	1249.96	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.73601) + HCP_A3 (x(Y) 0.99946)
AlY-06AlS.tdb	905.64	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.03246) + AL3Y (x(Y) 0.25)
AlY-06AlS.tdb	905.64	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.03226) + AL3Y (x(Y) 0.25)
AlY-06AlS.tdb	905.64	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.03224) + AL3Y (x(Y) 0.25)
AlY-06Liu.tdb	1751.14	LIQUID (x(Y) 0.98045) + BCC_A2 (x(Y) 0.99997) + HCP_A3 (x(Y) 0.99997)
AlY-06Liu.tdb	1751.14	LIQUID (x(Y) 0.98045) + HCP_A3 (x(Y) 0.99997) + BCC_A2 (x(Y) 0.99997)
AlY-06Liu.tdb	1409.86	C15_LAVES (x(Y) 0.33708) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51074)
AlY-06Liu.tdb	1409.86	C15_LAVES (x(Y) 0.33708) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51077)
AlY-06Liu.tdb	1356.79	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56172) + AL2Y3 (x(Y) 0.6)
AlY-06Liu.tdb	1356.78	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56194) + AL2Y3 (x(Y) 0.6)
AlY-06Liu.tdb	1356.78	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56198) + AL2Y3 (x(Y) 0.6)
AlY-06Liu.tdb	1253.4	LIQUID (x(Y) 0.1262) + AL3Y_BETA (x(Y) 0.25) + C15_LAVES (x(Y) 0.33185)
AlY-06Liu.tdb	1252.21	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.70778)
AlY-06Liu.tdb	1252.21	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.70764)
AlY-06Liu.tdb	1229.87	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.73623) + HCP_A3 (x(Y) 0.99998)
AlY-06Liu.tdb	1229.87	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.7362) + HCP_A3 (x(Y) 0.99998)
AlY-06Liu.tdb	917.21	AL3Y_D019 (x(Y) 0.25) + AL3Y_BETA (x(Y) 0.25) + C15_LAVES (x(Y) 0.33277)
AlY-06Liu.tdb	917.21	LIQUID (x(Y) 0.03081) + AL3Y_D019 (x(Y) 0.25) + AL3Y_BETA (x(Y) 0.25)
AlY-06Liu.tdb	910.44	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.02917) + AL3Y_D019 (x(Y) 0.25)
AlY-06Liu.tdb	910.44	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.0291) + AL3Y_D019 (x(Y) 0.25)
AlY-15Hua.tdb	1751.14	LIQUID (x(Y) 0.98045) + BCC_A2 (x(Y) 0.99997) + HCP_A3 (x(Y) 0.99997)
AlY-15Hua.tdb	1751.14	LIQUID (x(Y) 0.98045) + HCP_A3 (x(Y) 0.99997) + BCC_A2 (x(Y) 0.99997)
AlY-15Hua.tdb	1409.86	C15_LAVES (x(Y) 0.33708) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51074)
AlY-15Hua.tdb	1409.86	C15_LAVES (x(Y) 0.33708) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51077)
AlY-15Hua.tdb	1356.79	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56172) + AL2Y3 (x(Y) 0.6)
AlY-15Hua.tdb	1356.78	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56194) + AL2Y3 (x(Y) 0.6)
AlY-15Hua.tdb	1356.78	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.56198) + AL2Y3 (x(Y) 0.6)
AlY-15Hua.tdb	1253.4	LIQUID (x(Y) 0.1262) + AL3Y_BETA (x(Y) 0.25) + C15_LAVES (x(Y) 0.33185)
AlY-15Hua.tdb	1252.21	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.70778)
AlY-15Hua.tdb	1252.21	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.70764)
AlY-15Hua.tdb	1229.87	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.73623) + HCP_A3 (x(Y) 0.99998)
AlY-15Hua.tdb	1229.87	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.7362) + HCP_A3 (x(Y) 0.99998)
AlY-15Hua.tdb	917.21	AL3Y_D019 (x(Y) 0.25) + AL3Y_BETA (x(Y) 0.25) + C15_LAVES (x(Y) 0.33277)
AlY-15Hua.tdb	917.21	LIQUID (x(Y) 0.03082) + AL3Y_D019 (x(Y) 0.25) + AL3Y_BETA (x(Y) 0.25)
AlY-15Hua.tdb	911.01	FCC_A1 (x(Y) 0.0011) + LIQUID (x(Y) 0.02933) + AL3Y_D019 (x(Y) 0.25)
AlY-15Hua.tdb	911.01	FCC_A1 (x(Y) 0.00109) + LIQUID (x(Y) 0.02925) + AL3Y_D019 (x(Y) 0.25)
AlY-18Hu.tdb	1751.12	LIQUID (x(Y) 0.97898) + BCC_A2 (x(Y) 0.99987) + HCP_A3 (x(Y) 0.99987)
AlY-18Hu.tdb	1751.12	LIQUID (x(Y) 0.97898) + HCP_A3 (x(Y) 0.99987) + BCC_A2 (x(Y) 0.99987)
AlY-18Hu.tdb	1406.17	C15_LAVES (x(Y) 0.33436) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.50086)
AlY-18Hu.tdb	1406.17	C15_LAVES (x(Y) 0.33436) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.50091)
AlY-18Hu.tdb	1352.8	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.55707) + AL2Y3 (x(Y) 0.6)
AlY-18Hu.tdb	1352.8	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.55689) + AL2Y3 (x(Y) 0.6)
AlY-18Hu.tdb	1352.8	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.55711) + AL2Y3 (x(Y) 0.6)
AlY-18Hu.tdb	1258.16	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.69626)
AlY-18Hu.tdb	1258.15	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.69662)
AlY-18Hu.tdb	1250.83	LIQUID (x(Y) 0.12376) + AL3Y_BETA (x(Y) 0.25) + C15_LAVES (x(Y) 0.33274)
AlY-18Hu.tdb	1218.77	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.73801) + HCP_A3 (x(Y) 0.9999)
AlY-18Hu.tdb	1218.77	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.738) + HCP_A3 (x(Y) 0.9999)
AlY-18Hu.tdb	918.92	AL3Y_BETA (x(Y) 0.25) + AL3Y_D019 (x(Y) 0.25) + C15_LAVES (x(Y) 0.33331)
AlY-18Hu.tdb	918.92	LIQUID (x(Y) 0.03428) + AL3Y_D019 (x(Y) 0.25) + AL3Y_BETA (x(Y) 0.25)
AlY-18Hu.tdb	907.76	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.03175) + AL3Y_D019 (x(Y) 0.25)
AlY-18Hu.tdb	907.76	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.03163) + AL3Y_D019 (x(Y) 0.25)
AlY-95Gro-LB.tdb	1751.13	LIQUID (x(Y) 0.98271) + BCC_A2 (x(Y) 0.99993) + HCP_A3 (x(Y) 0.99994)
AlY-95Gro-LB.tdb	1751.13	LIQUID (x(Y) 0.98271) + BCC_A2 (x(Y) 0.99993) + HCP_A3 (x(Y) 0.99994)
AlY-95Gro-LB.tdb	1402.93	AL2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.49226) + ALY_B33 (x(Y) 0.5)
AlY-95Gro-LB.tdb	1402.93	AL2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.49215) + ALY_B33 (x(Y) 0.5)
AlY-95Gro-LB.tdb	1402.93	AL2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.4923) + ALY_B33 (x(Y) 0.5)
AlY-95Gro-LB.tdb	1351.2	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.5599) + AL2Y3 (x(Y) 0.6)
AlY-95Gro-LB.tdb	1351.2	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.55978) + AL2Y3 (x(Y) 0.6)
AlY-95Gro-LB.tdb	1259.86	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.71156)
AlY-95Gro-LB.tdb	1259.86	AL2Y3 (x(Y) 0.6) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.7114)
AlY-95Gro-LB.tdb	1253	LIQUID (x(Y) 0.12737) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-95Gro-LB.tdb	1253	LIQUID (x(Y) 0.12747) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-95Gro-LB.tdb	1237.75	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.74126) + HCP_A3 (x(Y) 0.99986)
AlY-95Gro-LB.tdb	1237.75	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.74124) + HCP_A3 (x(Y) 0.99986)
AlY-95Gro-LB.tdb	914.11	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.02237) + AL3Y (x(Y) 0.25)
AlY-95Gro-LB.tdb	914.11	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.02221) + AL3Y (x(Y) 0.25)
AlY-95Gro-LB.tdb	914.11	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.02218) + AL3Y (x(Y) 0.25)
AlY-98Luk.tdb	1751.15	LIQUID (x(Y) 0.98155) + HCP_A3 (x(Y) 1) + BCC_A2 (x(Y) 1)
AlY-98Luk.tdb	1402.98	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51555)
AlY-98Luk.tdb	1402.97	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51601)
AlY-98Luk.tdb	1402.97	AL2Y_C15 (x(Y) 0.33333) + ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.51608)
AlY-98Luk.tdb	1361.35	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58073) + AL2Y3 (x(Y) 0.6)
AlY-98Luk.tdb	1361.35	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58077) + AL2Y3 (x(Y) 0.6)
AlY-98Luk.tdb	1361.35	ALY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58038) + AL2Y3 (x(Y) 0.6)
AlY-98Luk.tdb	1303.16	AL2Y3 (x(Y) 0.6) + AL3Y5_D88 (x(Y) 0.625) + LIQUID (x(Y) 0.70719)
AlY-98Luk.tdb	1303.16	AL2Y3 (x(Y) 0.6) + AL3Y5_D88 (x(Y) 0.625) + LIQUID (x(Y) 0.70715)
AlY-98Luk.tdb	1259.02	AL3Y5_D88 (x(Y) 0.625) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.75724)
AlY-98Luk.tdb	1259.02	AL3Y5_D88 (x(Y) 0.625) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.75726)
AlY-98Luk.tdb	1259.02	AL3Y5_D88 (x(Y) 0.625) + ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.75691)
AlY-98Luk.tdb	1253.09	LIQUID (x(Y) 0.11439) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-98Luk.tdb	1253.09	LIQUID (x(Y) 0.11446) + AL3Y (x(Y) 0.25) + AL2Y_C15 (x(Y) 0.33333)
AlY-98Luk.tdb	1240.38	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.78276) + HCP_A3 (x(Y) 1)
AlY-98Luk.tdb	1240.38	ALY2_C37 (x(Y) 0.66667) + LIQUID (x(Y) 0.78302) + HCP_A3 (x(Y) 1)
AlY-98Luk.tdb	913.24	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.01992) + AL3Y (x(Y) 0.25)
AlY-98Luk.tdb	913.24	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.01982) + AL3Y (x(Y) 0.25)
AlY-98Luk.tdb	913.24	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.01979) + AL3Y (x(Y) 0.25)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlY-06AlS · CALPHAD hull AlY-06Liu · CALPHAD hull AlY-15Hua · CALPHAD hull AlY-95Gro-LB · CALPHAD hull AlY-98Luk

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Y system (105)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
1763.15	congruent melting: L <=> Al2Y	L: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 13 report
1763.15	congruent melting: L <=> Al2Y	L: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[1] Liu 2006	Table 2, p. 3, row 16 report
1763	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 20 report
1763	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 16 report
1763	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018	Table 7, p. 10, row 21 report
1758.15	congruent melting: L <=> Al2Y	L: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 14 report
1758	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 17 report
1752	bcc_Y <-> Liquid + hcp_Y	Liquid: Y 0.979	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 53 report
1751.99	(βY) <=> (αY), L	L: Y 0.9792	model	[1] Liu 2006	Table 2, p. 3, row 37 report
1751	bcc_Y <-> Liquid + hcp_Y	Liquid: Y 0.978	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 52 report
1751	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 19 report
1751	bcc_Y <-> Liquid + hcp_Y	Liquid: Y 0.979	model	[2] Hu 2018	Table 7, p. 10, row 54 report
1728.15	congruent melting: L <=> Al2Y	L: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 15 report
1728	congruent melting: Liquid <-> Al2Y	Liquid: Y 0.333; Al2Y: Al 0.666667, Y 0.333333	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 18 report
1628.15	peritectic		experimental	[3] Shakhshir 2006 cites Lundin 1961	p. 2 report	Their results are in general agreement with Snyder[14] except in the following points: the solid solubility of Y in Al was less than 0.1 wt.% at the eutectic temperature and the YAl3 peritectic reaction takes place at 1355 °C instead of 980 °C as reported by Snyder,[14] knowing that the accuracy of the reported temperature by Lundin et al.[15] was ±10 °C.
1628.15	L + Al2Y <=> βAl3Y	L: Y 0.23; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 11 report
1628.15	peritectic		experimental	[3] Shakhshir 2006 cites Savitskii 1976	p. 2 report	Savitiskii et al.[13] were the first to investigate the Al-Y system using metallographic and thermoanalytical measurements. They reported the formation of the peritectic intermetallic compound Y2Al5 at 1355 °C.
1628	Liquid + Al2Y <-> βAl3Y	Liquid: Y 0.23; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 12 report
1438.15	L + Al2Y <=> AlY	Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 19 report
1438	Liquid + Al2Y <-> AlY	Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 24 report
1411.15	L + Al2Y <=> AlY	Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 17 report
1411	Liquid + Al2Y <-> AlY	Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 22 report
1410.15	L + Al2Y <=> AlY	L: Y 0.511; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[1] Liu 2006	Table 2, p. 3, row 20 report
1410	Liquid + Al2Y <-> AlY	Liquid: Y 0.511; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 26 report
1406	Liquid + Al2Y <-> AlY	Liquid: Y 0.501; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018	Table 7, p. 10, row 27 report
1403.15	L + Al2Y <=> AlY	L: Y 0.52; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 18 report
1403.15	peritectic		experimental	[3] Shakhshir 2006	p. 2 report	The peritectic reactions for Al3Y, Al2Y, and AlY2 take place at 980, 1130, and 985 °C, respectively.
1403	Liquid + Al2Y <-> AlY	Liquid: Y 0.52; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 23 report
1403	Liquid + Al2Y <-> AlY	Liquid: Y 0.521; Al2Y: Al 0.666667, Y 0.333333; AlY: Al 0.5, Y 0.5	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 25 report
1382	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018	Table 7, p. 10, row 39 report
1378.15	congruent melting: L <=> Al2Y3	L: Y 0.6; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 25 report
1378	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 34 report
1377.15	congruent melting: L <=> Al2Y3	L: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[1] Liu 2006	Table 2, p. 3, row 28 report
1377	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 38 report
1373.15	congruent melting: L <=> Al2Y3	L: Y 0.6; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 26 report
1373	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 35 report
1367.15	congruent melting: L <=> Al2Y3	L: Y 0.6; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 27 report
1367	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 36 report
1365	congruent melting: Liquid <-> Al2Y3	Liquid: Y 0.6; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 37 report
1361.15	eutectic: L ↔ Al2Y3 + AlY		experimental	[3] Shakhshir 2006	p. 2 report	Further, the eutectic reaction L ↔ Al2Y3 + AlY takes place at 1088 °C.
1361.15	L <=> AlY + Al2Y3	L: Y 0.58; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 22 report
1361	Liquid <-> AlY + Al2Y3	Liquid: Y 0.58; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 29 report
1359	Liquid <-> AlY + Al2Y3	Liquid: Y 0.573; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 31 report
1359	AlY + Al3Y5 + Al2Y3/Al3Y5 + Al2Y3		model	[2] Hu 2018	Table 5, p. 6, row 73 report
1358.15	L <=> AlY + Al2Y3	L: Y 0.57; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 23 report
1358	Liquid <-> AlY + Al2Y3	Liquid: Y 0.57; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 30 report
1356.15	L <=> AlY + Al2Y3	L: Y 0.562; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[1] Liu 2006	Table 2, p. 3, row 24 report
1356	Liquid <-> AlY + Al2Y3	Liquid: Y 0.562; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 32 report
1354.15	L <=> AlY + Al2Y3	AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 21 report
1354	Liquid <-> AlY + Al2Y3	AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 28 report
1353	Liquid <-> AlY + Al2Y3	Liquid: Y 0.557; AlY: Al 0.5, Y 0.5; Al2Y3: Al 0.4, Y 0.6	model	[2] Hu 2018	Table 7, p. 10, row 33 report
1308.15	L + Al2Y3 <=> AlY2	L: Y 0.7; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 31 report
1308	Liquid + Al2Y3 <-> AlY2	Liquid: Y 0.7; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 42 report
1261	AlY + Al3Y5 + Al2Y3/Al3Y5 + Al2Y3		experimental	[2] Hu 2018	Table 5, p. 6, row 72 report
1258.15	peritectic		experimental	[3] Shakhshir 2006	p. 2 report	The peritectic reactions for Al3Y, Al2Y, and AlY2 take place at 980, 1130, and 985 °C, respectively.
1258.15	L + Al2Y3 <=> AlY2	L: Y 0.75; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 30 report
1258	Liquid + Al2Y3 <-> AlY2	Liquid: Y 0.75; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 41 report
1258	Liquid + Al2Y3 <-> AlY2	Liquid: Y 0.697; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018	Table 7, p. 10, row 45 report
1257	Liquid + Al2Y3 <-> AlY2	Liquid: Y 0.727; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 43 report
1257	Liquid + Al2Y <-> βAl3Y	Liquid: Y 0.112; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 13 report
1253.15	L + Al2Y <=> βAl3Y	Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 9 report
1253.15	L + Al2Y <=> βAl3Y	L: Y 0.117; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 10 report
1253.15	L + Al2Y <=> βAl3Y	L: Y 0.1262; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[1] Liu 2006	Table 2, p. 3, row 12 report
1253.15	peritectic		experimental	[3] Shakhshir 2006	p. 2 report	The peritectic reactions for Al3Y, Al2Y, and AlY2 take place at 980, 1130, and 985 °C, respectively.
1253	Liquid + Al2Y <-> βAl3Y	Liquid: Y 0.126; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 14 report
1253	Liquid + Al2Y <-> βAl3Y	Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 10 report
1253	Liquid + Al2Y <-> βAl3Y	Liquid: Y 0.117; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 11 report
1251.15	L + Al2Y3 <=> AlY2	L: Y 0.7076; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[1] Liu 2006	Table 2, p. 3, row 32 report
1251	Liquid + Al2Y <-> βAl3Y	Liquid: Y 0.124; Al2Y: Al 0.666667, Y 0.333333; βAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018	Table 7, p. 10, row 15 report
1251	Liquid + Al2Y3 <-> AlY2	Liquid: Y 0.708; Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 44 report
1250.15	L + Al2Y3 <=> AlY2	Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 29 report
1250	Liquid + Al2Y3 <-> AlY2	Al2Y3: Al 0.4, Y 0.6; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 40 report
1250	Liquid <-> AlY2 + hcp_Y	Liquid: Y 0.736; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 49 report
1243.15	L <=> AlY2 + (αY)	AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 35 report
1243	Liquid <-> AlY2 + hcp_Y	AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 48 report
1233.15	L <=> AlY2 + (αY)	L: Y 0.753; AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 34 report
1233	Liquid <-> AlY2 + hcp_Y	Liquid: Y 0.753; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 47 report
1228.15	L <=> AlY2 + (αY)	L: Y 0.75; AlY2: Al 0.333333, Y 0.666667	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 33 report
1228	Liquid <-> AlY2 + hcp_Y	Liquid: Y 0.75; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 46 report
1227.15	L <=> AlY2 + (αY)	L: Y 0.737; AlY2: Al 0.333333, Y 0.666667	model	[1] Liu 2006	Table 2, p. 3, row 36 report
1227	Liquid <-> AlY2 + hcp_Y	Liquid: Y 0.737; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 50 report
1219	Liquid <-> AlY2 + hcp_Y	Liquid: Y 0.738; AlY2: Al 0.333333, Y 0.666667	model	[2] Hu 2018	Table 7, p. 10, row 51 report
974	Al2Y + βAl3Y/Al2Y + αAl3Y + βAl3Y		model	[2] Hu 2018	Table 5, p. 6, row 43 report
967	Al2Y + αAl3Y + βAl3Y/Al2Y + αAl3Y		model	[2] Hu 2018	Table 5, p. 6, row 44 report
923.15	L <=> (Al) + αAl3Y	L: Y 0.033; αAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Lundin 1961	Table 2, p. 3, row 3 report
923	Liquid <-> fcc_Al + αAl3Y	Liquid: Y 0.033; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Lundin 1961	Table 7, p. 10, row 3 report
919	polymorphic: βAl3Y <-> αAl3Y	βAl3Y: Al 0.75, Y 0.25; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018	Table 7, p. 10, row 9 report
917.15	βAl3Y <=> αAl3Y, L, Al2Y	βAl3Y: Al 0.75, Y 0.25; αAl3Y: Al 0.75, Y 0.25; Al2Y: Al 0.666667, Y 0.333333	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 7 report
917.15	βAl3Y <=> αAl3Y, L, Al2Y	βAl3Y: Al 0.75, Y 0.25; αAl3Y: Al 0.75, Y 0.25; Al2Y: Al 0.666667, Y 0.333333	model	[1] Liu 2006	Table 2, p. 3, row 8 report
917	polymorphic: βAl3Y <-> αAl3Y	βAl3Y: Al 0.75, Y 0.25; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 8 report
917	polymorphic: βAl3Y <-> αAl3Y	βAl3Y: Al 0.75, Y 0.25; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 7 report
913.15	L <=> (Al) + αAl3Y	L: Y 0.029; αAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Snyder 1960	Table 2, p. 3, row 2 report
913	Liquid <-> fcc_Al + αAl3Y	Liquid: Y 0.029; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Snyder 1960	Table 7, p. 10, row 2 report
911.15	L <=> (Al) + αAl3Y	L: Y 0.03; αAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Drits 1969	Table 2, p. 3, row 4 report
910.15	L <=> (Al) + αAl3Y	L: Y 0.0296; αAl3Y: Al 0.75, Y 0.25	model	[1] Liu 2006	Table 2, p. 3, row 6 report
910.15	L <=> (Al) + αAl3Y	αAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Liu 2006	Table 2, p. 3, row 1 report
910.15	L <=> (Al) + αAl3Y	L: Y 0.03; αAl3Y: Al 0.75, Y 0.25	experimental	[1] Liu 2006 cites Kononenko 1990	Table 2, p. 3, row 5 report
910	Liquid <-> fcc_Al + αAl3Y	αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 1 report
910	Liquid <-> fcc_Al + αAl3Y	Liquid: Y 0.03; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Liu 2006 doi	Table 7, p. 10, row 5 report
908	Liquid <-> fcc_Al + αAl3Y	Liquid: Y 0.032; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018	Table 7, p. 10, row 6 report
906	Liquid <-> fcc_Al + αAl3Y	Liquid: Y 0.032; αAl3Y: Al 0.75, Y 0.25	model	[2] Hu 2018 cites Shakhshir 2006 doi	Table 7, p. 10, row 4 report
843	Al2Y3 + Al3Y5/Al2Y3 + Al3Y5 + AlY2		model	[2] Hu 2018	Table 5, p. 6, row 74 report
813	Al2Y3 + Al3Y5 + AlY2/Al2Y3 + AlY2		model	[2] Hu 2018	Table 5, p. 6, row 75 report
805	AlY2 + Al3Y5/AlY2 + Al3Y5 + Al2Y3		model	[2] Hu 2018	Table 5, p. 6, row 93 report
798	AlY2 + Al3Y5 + Al2Y3/AlY2 + Al2Y3		model	[2] Hu 2018	Table 5, p. 6, row 94 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Al–Y system (12)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Y2Al	AlY2	-35 kJ/mol-atom		model	-30.364 (mp-aaaaaqpy)	-30.446 (oqmd-10610)	[4] Gröbner 1995	Table 1, p. 2, row 14 report
Y3Al2	Al2Y3	-40 kJ/mol-atom	298.15	experimental	-34.207 (mp-aaaaaytf)	-34.421 (oqmd-27977)	[4] Gröbner 1995 cites Meschel 1993 doi	Table 1, p. 2, row 11 report
Y3Al2	Al2Y3	-40 kJ/mol-atom		model	-34.207 (mp-aaaaaytf)	-34.421 (oqmd-27977)	[4] Gröbner 1995	Table 1, p. 2, row 12 report
Y5Al3	Al3Y5	-38 kJ/mol-atom		model	-28.525 (mp-aaacpbsg)	-28.827 (oqmd-689961)	[4] Gröbner 1995	Table 1, p. 2, row 13 report
YAl	AlY	-87.8 kJ/mol-atom	298.15	experimental	-40.364 (mp-aaaaaqpw)	-42.255 (oqmd-1782622)	[4] Gröbner 1995 cites Snyder 1960	Table 1, p. 2, row 5 report
YAl	AlY	-45 kJ/mol-atom		model	-40.364 (mp-aaaaaqpw)	-42.255 (oqmd-1782622)	[4] Gröbner 1995	Table 1, p. 2, row 6 report
YAl2	Al2Y	-80.9 kJ/mol-atom	298.15	experimental	-51.266 (mp-aaaaadli)	-51.513 (oqmd-10612)	[4] Gröbner 1995 cites Snyder 1960	Table 1, p. 2, row 3 report
YAl2	Al2Y	-50.4 kJ/mol-atom		model	-51.266 (mp-aaaaadli)	-51.513 (oqmd-10612)	[4] Gröbner 1995	Table 1, p. 2, row 4 report
YAl2	Al2Y	-50.4 kJ/mol-atom	298.15	experimental	-51.266 (mp-aaaaadli)	-51.513 (oqmd-10612)	[4] Gröbner 1995 cites Jung 1991 doi	Table 1, p. 2, row 9 report
YAl3	Al3Y	-47.5 kJ/mol-atom		model	-42.248 (mp-aaabxgjn)	-42.348 (oqmd-321899)	[4] Gröbner 1995	Table 1, p. 2, row 2 report
YAl3	Al3Y	-47.5 kJ/mol-atom	763	experimental	-42.248 (mp-aaabxgjn)	-42.348 (oqmd-321899)	[4] Gröbner 1995 cites F 1988	Table 1, p. 2, row 7 report
YAl3	Al3Y	-47.1 kJ/mol-atom	298.15	experimental	-42.248 (mp-aaabxgjn)	-42.348 (oqmd-321899)	[4] Gröbner 1995 cites Snyder 1960	Table 1, p. 2, row 1 report

Other properties

Phase transition (4)

Phase transition, Al–Y system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	918.15 K	918.15	Al3Y	experimental	[3] Shakhshir 2006 cites Bailey 1967 doi	p. 3 report	A transformation of Al3Y from ␣ to ␤ was noticed by Bailey[23] at 645 °C; however, the two different phases ␣ and ␤ were not confirmed by Raggio et al.,[24] or by Lingmin et al.[20]
Phase transition	1373.15 K	1373.15	congruent melting	experimental	[3] Shakhshir 2006 cites Snyder 1960	p. 2 report	He reported, with ±5 °C accuracy, the liquidus, two congruent compounds Al2Y and Al2Y3, which melt at 1485 and 1100 °C, respectively, and three incongruent melting compounds Al3Y, AlY, and AlY2.
Phase transition	1758.15 K	1758.15	congruent melting	experimental	[3] Shakhshir 2006 cites Snyder 1960	p. 2 report	He reported, with ±5 °C accuracy, the liquidus, two congruent compounds Al2Y and Al2Y3, which melt at 1485 and 1100 °C, respectively, and three incongruent melting compounds Al3Y, AlY, and AlY2.
Phase transition	1795.15 K	1795.15	␤Y	experimental	[3] Shakhshir 2006	p. 2 report	They reported that ␤Y phase melts at 1522 °C and yttrium undergoes an ␣ ↔ ␤ allotropic phase transformation at 1478 °C.

Crystal structure (31)

Crystal structure, Al–Y system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	7.8611 Å	298.15	Al2Y alloy: Y 0.333333	unspecified	[5] Zhang 2009	Table 1, p. 2, row 4 report
Lattice a	7.8611 Å	298.15	Al2Y alloy: Y 0.333333	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 12 report
Lattice a	8.2411 Å	298.15	Al2Y3 alloy: Y 0.6	unspecified	[5] Zhang 2009	Table 1, p. 2, row 6 report
Lattice a	8.239 Å	298.15	Al2Y3 alloy: Y 0.6	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 14 report
Lattice a	6.1884 Å	298.15	Al3Y_H alloy: Y 0.25	unspecified	[5] Zhang 2009	Table 1, p. 2, row 2 report
Lattice a	6.276 Å	298.15	Al3Y_L alloy: Y 0.25	unspecified	[5] Zhang 2009	Table 1, p. 2, row 3 report
Lattice a	3.884 Å	298.15	AlY alloy: Y 0.5	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 13 report
Lattice a	3.884 Å	298.15	AlY alloy: Y 0.5	unspecified	[5] Zhang 2009	Table 1, p. 2, row 5 report
Lattice a	6.59 Å	298.15	AlY2 alloy: Y 0.666667	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 15 report
Lattice a	6.54 Å	298.15	AlY2 alloy: Y 0.666667	unspecified	[5] Zhang 2009	Table 1, p. 2, row 7 report
Lattice a	6.276 Å	298.15	αAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 10 report
Lattice a	6.204 Å	298.15	βAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 11 report
Lattice b	7.8611 Å	298.15	Al2Y alloy: Y 0.333333	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 12 report
Lattice b	8.239 Å	298.15	Al2Y3 alloy: Y 0.6	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 14 report
Lattice b	11.522 Å	298.15	AlY alloy: Y 0.5	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 13 report
Lattice b	11.522 Å	298.15	AlY alloy: Y 0.5	unspecified	[5] Zhang 2009	Table 1, p. 2, row 5 report
Lattice b	5.12 Å	298.15	AlY2 alloy: Y 0.666667	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 15 report
Lattice b	5.08 Å	298.15	AlY2 alloy: Y 0.666667	unspecified	[5] Zhang 2009	Table 1, p. 2, row 7 report
Lattice b	6.276 Å	298.15	αAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 10 report
Lattice b	6.204 Å	298.15	βAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 11 report
Lattice c	7.8611 Å	298.15	Al2Y alloy: Y 0.333333	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 12 report
Lattice c	7.6411 Å	298.15	Al2Y3 alloy: Y 0.6	unspecified	[5] Zhang 2009	Table 1, p. 2, row 6 report
Lattice c	7.648 Å	298.15	Al2Y3 alloy: Y 0.6	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 14 report
Lattice c	21.094 Å	298.15	Al3Y_H alloy: Y 0.25	unspecified	[5] Zhang 2009	Table 1, p. 2, row 2 report
Lattice c	4.582 Å	298.15	Al3Y_L alloy: Y 0.25	unspecified	[5] Zhang 2009	Table 1, p. 2, row 3 report
Lattice c	4.385 Å	298.15	AlY alloy: Y 0.5	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 13 report
Lattice c	4.385 Å	298.15	AlY alloy: Y 0.5	unspecified	[5] Zhang 2009	Table 1, p. 2, row 5 report
Lattice c	9.3 Å	298.15	AlY2 alloy: Y 0.666667	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 15 report
Lattice c	9.4 Å	298.15	AlY2 alloy: Y 0.666667	unspecified	[5] Zhang 2009	Table 1, p. 2, row 7 report
Lattice c	4.582 Å	298.15	αAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 10 report
Lattice c	21.184 Å	298.15	βAl3Y alloy: Y 0.25	model	[2] Hu 2018 cites Villars 1997	Table 1, p. 2, row 11 report

Sources

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

Shuhong Liu, Yong Du, Hailin Chen, A thermodynamic reassessment of the Al–Y system, Calphad 30, 334-340 (2006). doi:10.1016/j.calphad.2006.01.001
J.L. Hu, H. Bo, L.B. Liu, Z.P. Jin, Thermodynamic study of the Al-Sc-Y system, Thermochimica Acta 661, 147-159 (2018). doi:10.1016/j.tca.2018.01.018
S. Al Shakhshir, M. Medraj, Computational thermodynamic model for the Mg−Al−Y system, JPED 27, 231-244 (2006). doi:10.1361/154770306x109782
J. Gröbner, H.-L. Lukas, F. Aldinger, Thermodynamic calculations in the YAlC system, Journal of Alloys and Compounds 220, 8-14 (1995). doi:10.1016/0925-8388(94)06028-2
L.G. Zhang, H.M. Chen, H.Q. Dong, G.X. Huang, L.B. Liu, Z.P. Jin, Thermodynamic description of the Al–Sb–Y system, Journal of Alloys and Compounds 475, 233-237 (2009). doi:10.1016/j.jallcom.2008.07.105

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}
}