Al–Sc system

103 accepted literature values from 4 paper(s) (experimental 35, model 40, unspecified 28); 3 calculated phase diagram(s). 20 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 (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	35
model	40
unspecified	28

Accepted values by property group
Property group	Values
invariant reaction	70
crystal structure	33

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
AlSc-10Bo.tdb	H. Bo, L.B. Liu, Z.P. Jin, J. Alloys Compd., 490, 318-25(2010). doi:10.1016/j.jallcom.2009.10.003	`45d2f4a9a159e401b7d33a7f04c803b81317d99ff277797709fefc694ec5704b`	viewer · TDB · JSON
AlSc-98Mur.tdb	J.L. Murray, J. Phase Equilib., 19, 380-84(1998). doi:10.1361/105497198770342120	`c476dee15cbcc54154a2f9748d6b8eece661d00bdde805696a558c6309ee2108`	viewer · TDB · JSON
AlSc-99Cac-LB.tdb	G. Cacciamani, P. Riani, G. Borzone, N. Parodi, A. Saccone, R. Ferro, A. Pisch, R. Schmid-Fetzer, Intermetallics, 7, 101-108(1999). doi:10.1016/S0966-9795(98)00022-3	`3bd2989713373b922f6ed1268770e1e9fc490f4f513250de1e0a5c23cc9c5a3d`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlSc-10Bo.tdb	1591.11	LIQUID (x(Sc) 0.22616) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-10Bo.tdb	1591.11	LIQUID (x(Sc) 0.22629) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-10Bo.tdb	1591.11	LIQUID (x(Sc) 0.2261) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-10Bo.tdb	1504.81	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.47769) + ALSC_B2 (x(Sc) 0.5)
AlSc-10Bo.tdb	1504.81	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.47757) + ALSC_B2 (x(Sc) 0.5)
AlSc-10Bo.tdb	1472.48	ALSC_B2 (x(Sc) 0.5) + LIQUID (x(Sc) 0.56482) + ALSC2_B82 (x(Sc) 0.66667)
AlSc-10Bo.tdb	1472.35	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.77399) + BCC_A2 (x(Sc) 0.84632)
AlSc-10Bo.tdb	1472.35	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.77404) + BCC_A2 (x(Sc) 0.84637)
AlSc-10Bo.tdb	1242.39	ALSC2_B82 (x(Sc) 0.66667) + BCC_A2 (x(Sc) 0.88088) + HCP_A3 (x(Sc) 0.89758)
AlSc-10Bo.tdb	1242.39	ALSC2_B82 (x(Sc) 0.66667) + BCC_A2 (x(Sc) 0.88096) + HCP_A3 (x(Sc) 0.89767)
AlSc-10Bo.tdb	932.79	FCC_A1 (x(Sc) 0.002) + LIQUID (x(Sc) 0.00303) + AL3SC_L12 (x(Sc) 0.25)
AlSc-98Mur.tdb	1615.51	LIQUID (x(Sc) 0.91504) + BCC_A2 (x(Sc) 0.95314) + HCP_A3 (x(Sc) 0.96441)
AlSc-98Mur.tdb	1603.68	LIQUID (x(Sc) 0.24855) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-98Mur.tdb	1603.68	LIQUID (x(Sc) 0.24887) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-98Mur.tdb	1603.68	LIQUID (x(Sc) 0.24847) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-98Mur.tdb	1550.82	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.44694) + ALSC_B2 (x(Sc) 0.5)
AlSc-98Mur.tdb	1550.82	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.4468) + ALSC_B2 (x(Sc) 0.5)
AlSc-98Mur.tdb	1455.83	ALSC_B2 (x(Sc) 0.5) + LIQUID (x(Sc) 0.61084) + ALSC2_B82 (x(Sc) 0.66667)
AlSc-98Mur.tdb	1455.83	ALSC_B2 (x(Sc) 0.5) + LIQUID (x(Sc) 0.61078) + ALSC2_B82 (x(Sc) 0.66667)
AlSc-98Mur.tdb	1178.57	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.82969) + HCP_A3 (x(Sc) 0.95263)
AlSc-98Mur.tdb	1178.57	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.82966) + HCP_A3 (x(Sc) 0.95264)
AlSc-98Mur.tdb	932.81	FCC_A1 (x(Sc) 0.00233) + LIQUID (x(Sc) 0.00335) + AL3SC_L12 (x(Sc) 0.25)
AlSc-98Mur.tdb	932.8	FCC_A1 (x(Sc) 0.00227) + LIQUID (x(Sc) 0.00325) + AL3SC_L12 (x(Sc) 0.25)
AlSc-99Cac-LB.tdb	1556.09	LIQUID (x(Sc) 0.20653) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-99Cac-LB.tdb	1556.09	LIQUID (x(Sc) 0.20684) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-99Cac-LB.tdb	1556.09	LIQUID (x(Sc) 0.20646) + AL3SC_L12 (x(Sc) 0.25) + AL2SC_C15 (x(Sc) 0.33333)
AlSc-99Cac-LB.tdb	1506.79	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.49101) + ALSC_B2 (x(Sc) 0.5)
AlSc-99Cac-LB.tdb	1506.78	AL2SC_C15 (x(Sc) 0.33333) + LIQUID (x(Sc) 0.49123) + ALSC_B2 (x(Sc) 0.5)
AlSc-99Cac-LB.tdb	1478.32	ALSC_B2 (x(Sc) 0.5) + LIQUID (x(Sc) 0.56612) + ALSC2_B82 (x(Sc) 0.66667)
AlSc-99Cac-LB.tdb	1478.32	ALSC_B2 (x(Sc) 0.5) + LIQUID (x(Sc) 0.56608) + ALSC2_B82 (x(Sc) 0.66667)
AlSc-99Cac-LB.tdb	1460.8	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.77463) + BCC_A2 (x(Sc) 0.79816)
AlSc-99Cac-LB.tdb	1460.8	ALSC2_B82 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.77467) + BCC_A2 (x(Sc) 0.79821)
AlSc-99Cac-LB.tdb	1250.33	ALSC2_B82 (x(Sc) 0.66667) + BCC_A2 (x(Sc) 0.87179) + HCP_A3 (x(Sc) 0.90804)
AlSc-99Cac-LB.tdb	1250.33	ALSC2_B82 (x(Sc) 0.66667) + BCC_A2 (x(Sc) 0.87188) + HCP_A3 (x(Sc) 0.90812)
AlSc-99Cac-LB.tdb	930.94	FCC_A1 (x(Sc) 0.0024) + LIQUID (x(Sc) 0.00575) + AL3SC_L12 (x(Sc) 0.25)
AlSc-99Cac-LB.tdb	930.94	FCC_A1 (x(Sc) 0.0024) + LIQUID (x(Sc) 0.00575) + AL3SC_L12 (x(Sc) 0.25)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlSc-98Mur · CALPHAD hull AlSc-99Cac-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Sc system (70)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1814.15	congruent melting: L -> βSc	βSc: Sc 1	model	[1] Murray 1998	Table 1, p. 1, row 9 report
1698	congruent melting: Liquid -> Al2Sc	L: Al 0.666667, Sc 0.333333; Al2Sc: Al 0.666667, Sc 0.333333	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 11 report
1694	congruent melting: Liquid -> Al2Sc	L: Sc 0.333; Al2Sc: Sc 0.333	model	[2] Bo 2010	Table 2, p. 6, row 12 report
1693.15	congruent melting: L->ScAl2	L: Sc 0.333; ScAl2: Sc 0.333	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 7 report
1693.15	congruent melting: L -> Al2Sc	L: Sc 0.333; Al2Sc: Sc 0.333	model	[1] Murray 1998	Table 1, p. 1, row 4 report
1693	congruent melting: Liquid -> Al2Sc	L: Sc 0.333; Al2Sc: Sc 0.333	experimental	[2] Bo 2010 cites Naumkin 1965	Table 2, p. 6, row 9 report
1664.65	congruent melting: L->ScAl2	L: Sc 0.333; ScAl2: Sc 0.333	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 8 report
1664.5	congruent melting: Liquid -> Al2Sc	L: Sc 0.333; Al2Sc: Sc 0.333	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 10 report
1610.15	peritectic: (αSc) -> L + (βSc)	(αSc): Sc 0.97; L: Sc 0.92; (βSc): Sc 0.98	model	[1] Murray 1998	Table 1, p. 1, row 10 report
1593.15	peritectic: L + Al2Sc -> Al3Sc	L: Sc 0.24; Al2Sc: Sc 0.333; Al3Sc: Sc 0.25	model	[1] Murray 1998	Table 1, p. 1, row 3 report
1593.15	L+ScAl2->ScAl3	L: Sc 0.24; ScAl2: Sc 0.333; ScAl3: Sc 0.25	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 5 report
1593	Liquid + Al2Sc -> Al3Sc	L: Sc 0.24; Al2Sc: Sc 0.333; Al3Sc: Sc 0.25	experimental	[2] Bo 2010 cites Naumkin 1965	Table 2, p. 6, row 5 report
1591	Liquid + Al2Sc -> Al3Sc	L: Sc 0.226; Al2Sc: Sc 0.333; Al3Sc: Sc 0.25	model	[2] Bo 2010	Table 2, p. 6, row 8 report
1589	Liquid + Al2Sc -> Al3Sc	Al2Sc: Al 0.666667, Sc 0.333333; Al3Sc: Al 0.75, Sc 0.25	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 7 report
1574	congruent melting: Liquid -> AlSc2	L: Al 0.333333, Sc 0.666667; AlSc2: Al 0.333333, Sc 0.666667	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 27 report
1573.15	congruent melting: L -> AlSc	L: Sc 0.5; AlSc: Sc 0.5	model	[1] Murray 1998	Table 1, p. 1, row 6 report
1573.15	congruent melting: L->ScAl	L: Sc 0.5; ScAl: Sc 0.5	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 12 report
1573.15	congruent melting: L->Sc2Al	L: Sc 0.667; Sc2Al: Sc 0.667	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 18 report
1573	congruent melting: Liquid -> AlSc2	L: Sc 0.667; AlSc2: Sc 0.667	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 25 report
1571	congruent melting: Liquid -> AlSc2	L: Sc 0.667; AlSc2: Sc 0.667	model	[2] Bo 2010	Table 2, p. 6, row 28 report
1560.15	congruent melting: L->Sc2Al	L: Sc 0.667; Sc2Al: Sc 0.667	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 19 report
1560	congruent melting: Liquid -> AlSc2	L: Sc 0.667; AlSc2: Sc 0.667	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 26 report
1556.15	L+ScAl2->ScAl3	L: Sc 0.207; ScAl2: Sc 0.333; ScAl3: Sc 0.25	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 6 report
1556	Liquid + Al2Sc -> Al3Sc	L: Sc 0.207; Al2Sc: Sc 0.333; Al3Sc: Sc 0.25	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 6 report
1519	congruent melting: Liquid -> AlSc	L: Al 0.5, Sc 0.5; AlSc: Al 0.5, Sc 0.5	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 19 report
1513.15	congruent melting: L->ScAl	L: Sc 0.5; ScAl: Sc 0.5	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 13 report
1513	congruent melting: Liquid -> AlSc	L: Sc 0.5; AlSc: Sc 0.5	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 17 report
1509	congruent melting: Liquid -> AlSc	L: Sc 0.5; AlSc: Sc 0.5	model	[2] Bo 2010	Table 2, p. 6, row 20 report
1508	eutectic: Liquid -> Al2Sc + AlSc	Al2Sc: Al 0.666667, Sc 0.333333; AlSc: Al 0.5, Sc 0.5	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 15 report
1507.25	congruent melting: L->ScAl	L: Sc 0.5; ScAl: Sc 0.5	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 14 report
1507.1	congruent melting: Liquid -> AlSc	L: Sc 0.5; AlSc: Sc 0.5	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 18 report
1506.75	eutectic: L->ScAl2+ScAl	L: Sc 0.491; ScAl2: Sc 0.333; ScAl: Sc 0.5	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 11 report
1506.6	eutectic: Liquid -> Al2Sc + AlSc	L: Sc 0.491; Al2Sc: Sc 0.333; AlSc: Sc 0.5	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 14 report
1505	eutectic: Liquid -> Al2Sc + AlSc	L: Sc 0.478; Al2Sc: Sc 0.333; AlSc: Sc 0.5	model	[2] Bo 2010	Table 2, p. 6, row 16 report
1493.15	eutectic: L->ScAl+Sc2Al	L: Sc 0.58; ScAl: Sc 0.5; Sc2Al: Sc 0.667	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 16 report
1479	eutectic: Liquid -> AlSc2 + βSc	AlSc2: Al 0.333333, Sc 0.666667	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 31 report
1478.25	eutectic: L->ScAl+Sc2Al	L: Sc 0.566; ScAl: Sc 0.5; Sc2Al: Sc 0.667	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 17 report
1478.1	eutectic: Liquid -> AlSc + AlSc2	L: Sc 0.566; AlSc: Sc 0.5; AlSc2: Sc 0.667	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 22 report
1474	eutectic: Liquid -> AlSc + AlSc2	AlSc: Al 0.5, Sc 0.5; AlSc2: Al 0.333333, Sc 0.666667	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 23 report
1472	eutectic: Liquid -> AlSc + AlSc2	L: Sc 0.565; AlSc: Sc 0.5; AlSc2: Sc 0.667	model	[2] Bo 2010	Table 2, p. 6, row 24 report
1472	eutectic: Liquid -> AlSc2 + βSc	L: Sc 0.774; AlSc2: Sc 0.667; βSc: Sc 0.846	model	[2] Bo 2010	Table 2, p. 6, row 32 report
1468.15	eutectic: L->ScAl+Sc2Al	ScAl: Sc 0.5; Sc2Al: Sc 0.667	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 15 report
1468.15	peritectic: L + AlSc -> AlSc2	L: Sc 0.7; AlSc: Sc 0.5; AlSc2: Sc 0.667	model	[1] Murray 1998	Table 1, p. 1, row 7 report
1468	eutectic: Liquid -> AlSc + AlSc2	AlSc: Sc 0.5; AlSc2: Sc 0.667	experimental	[2] Bo 2010 cites Naumkin 1965	Table 2, p. 6, row 21 report
1463.15	eutectic: L->ScAl2+ScAl	L: Sc 0.45; ScAl2: Sc 0.333; ScAl: Sc 0.5	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 10 report
1463	eutectic: Liquid -> Al2Sc + AlSc	L: Sc 0.45; Al2Sc: Sc 0.333; AlSc: Sc 0.5	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 13 report
1460.75	eutectic: L->Sc2Al+(βSc)	L: Sc 0.775; Sc2Al: Sc 0.667; (βSc): Sc 0.798	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 21 report
1460.6	eutectic: Liquid -> AlSc2 + βSc	L: Sc 0.775; AlSc2: Sc 0.667; βSc: Sc 0.798	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 30 report
1458.15	eutectic: L->Sc2Al+(βSc)	L: Sc 0.77; Sc2Al: Sc 0.667; (βSc): Sc 0.81	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 20 report
1458	eutectic: Liquid -> AlSc2 + βSc	L: Sc 0.77; AlSc2: Sc 0.667; βSc: Sc 0.81	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 29 report
1423.15	eutectic: L -> Al2Sc + AlSc	L: Sc 0.45; Al2Sc: Sc 0.333; AlSc: Sc 0.5	model	[1] Murray 1998	Table 1, p. 1, row 5 report
1423.15	eutectic: L->ScAl2+ScAl	L: Sc 0.43; ScAl2: Sc 0.033; ScAl: Sc 0.5	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 9 report
1250.25	(βSc)->Sc2Al+(αSc)	(βSc): Sc 0.872; Sc2Al: Sc 0.667; (αSc): Sc 0.908	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 24 report
1250.1	βSc -> AlSc2 + αSc	βSc: Sc 0.872; AlSc2: Sc 0.667; αSc: Sc 0.908	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 34 report
1243.15	(βSc)->Sc2Al+(αSc)	(βSc): Sc 0.85; Sc2Al: Sc 0.667; (αSc): Sc 0.93	experimental	[3] Cacciamani 1999	Table 4, p. 7, row 23 report
1243	βSc -> AlSc2 + αSc	βSc: Sc 0.85; AlSc2: Sc 0.667; αSc: Sc 0.93	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 33 report
1242	βSc -> AlSc2 + αSc	βSc: Sc 0.881; AlSc2: Sc 0.667; αSc: Sc 0.898	model	[2] Bo 2010	Table 2, p. 6, row 36 report
1233	βSc -> AlSc2 + αSc	AlSc2: Al 0.333333, Sc 0.666667	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 35 report
1218.15	eutectic: L->Sc2Al+(αSc)	L: Sc 0.87; Sc2Al: Sc 0.667; (αSc): Sc 0.9	experimental	[3] Cacciamani 1999 cites Naumkin 1965	Table 4, p. 7, row 22 report
1218.15	eutectic: L -> AlSc2 + (αSc)	L: Sc 0.87; AlSc2: Sc 0.667; (αSc): Sc 0.96	model	[1] Murray 1998	Table 1, p. 1, row 8 report
933.602	congruent melting: L -> Al	Al: Sc 0	model	[1] Murray 1998	Table 1, p. 1, row 1 report
933.15	eutectic: L -> (Al) + Al3Sc	L: Sc 0.005; (Al): Sc 0.0038; Al3Sc: Sc 0.25	model	[1] Murray 1998	Table 1, p. 1, row 2 report
933	eutectic: Liquid -> Fcc_Al + Al3Sc	Al3Sc: Al 0.75, Sc 0.25	model	[2] Bo 2010 cites Kang 2008 doi	Table 2, p. 6, row 3 report
933	eutectic: Liquid -> Fcc_Al + Al3Sc	L: Sc 0.00303; Fcc_Al: Sc 0.002; Al3Sc: Sc 0.25	model	[2] Bo 2010	Table 2, p. 6, row 4 report
932.15	eutectic: L->(Al)+ScAl3	L: Sc 0.00313; (Al): Sc 0.00228; ScAl3: Sc 0.25	experimental	[3] Cacciamani 1999 cites LA 1971	Table 4, p. 7, row 1 report
932	eutectic: Liquid -> Fcc_Al + Al3Sc	L: Sc 0.00313; Fcc_Al: Sc 0.00228; Al3Sc: Sc 0.25	experimental	[2] Bo 2010 cites Willey 1971	Table 2, p. 6, row 1 report
931.15	eutectic: L->(Al)+ScAl3	L: Sc 0.0036; (Al): Sc 0.00228; ScAl3: Sc 0.25	experimental	[3] Cacciamani 1999 cites Kononenko 1990	Table 4, p. 7, row 3 report
929.65	eutectic: L->(Al)+ScAl3	L: Sc 0.00566; (Al): Sc 0.00415; ScAl3: Sc 0.25	unspecified	[3] Cacciamani 1999	Table 4, p. 7, row 4 report
929.5	eutectic: Liquid -> Fcc_Al + Al3Sc	L: Sc 0.00566; Fcc_Al: Sc 0.00415; Al3Sc: Sc 0.25	unspecified	[2] Bo 2010 cites Cacciamani 1999 doi	Table 2, p. 6, row 2 report
928.15	eutectic: L->(Al)+ScAl3	L: Sc 0.0033; (Al): Sc 0.0021; ScAl3: Sc 0.25	experimental	[3] Cacciamani 1999 cites Drits 1973	Table 4, p. 7, row 2 report

Other properties

Crystal structure (33)

Crystal structure, Al–Sc system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	7.6 Å	298.15	Al2Sc alloy: Sc 0.333333	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 7 report
Lattice a	7.582 Å	298.15	Al2Sc Al2Sc: Al 0.667, Sc 0.333	unspecified	[1] Murray 1998	Table 3, p. 1, row 3 report
Lattice a	4.1 Å	298.15	Al3Sc alloy: Sc 0.25	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 6 report
Lattice a	4.103 Å	298.15	Al3Sc Al3Sc: Al 0.75, Sc 0.25	unspecified	[1] Murray 1998	Table 3, p. 1, row 2 report
Lattice a	3.45 Å	298.15	AlSc alloy: Sc 0.5	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 8 report
Lattice a	3.45 Å	298.15	AlSc AlSc: Al 0.5, Sc 0.5	unspecified	[1] Murray 1998	Table 3, p. 1, row 4 report
Lattice a	4.888 Å	298.15	AlSc2 alloy: Sc 0.666667	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 9 report
Lattice a	4.888 Å	298.15	AlSc2 AlSc2: Al 0.333, Sc 0.667	unspecified	[1] Murray 1998	Table 3, p. 1, row 5 report
Lattice a	4.8813 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 2 report
Lattice a	4.888 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999 cites Eymond 1969 doi	Table 1, p. 2, row 1 report
Lattice a	4.887 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999	Table 1, p. 2, row 3 report
Lattice a	3.988 Å	298.15	ScAl alloy: Sc 0.5	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 5 report
Lattice a	3.45 Å	298.15	ScAl alloy: Sc 0.5	experimental	[3] Cacciamani 1999 cites Schob 1965 doi	Table 1, p. 2, row 4 report
Lattice a	7.58 Å	298.15	ScAl2 alloy: Sc 0.333333	experimental	[3] Cacciamani 1999 cites Rechkin 1964	Table 1, p. 2, row 6 report
Lattice a	7.5748 Å	298.15	ScAl2 alloy: Sc 0.333333	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 7 report
Lattice a	7.578 Å	298.15	ScAl2 alloy: Sc 0.333333	experimental	[3] Cacciamani 1999	Table 1, p. 2, row 8 report
Lattice a	4.1 Å	298.15	ScAl3 alloy: Sc 0.25	experimental	[3] Cacciamani 1999 cites Rechkin 1964	Table 1, p. 2, row 9 report
Lattice a	4.103 Å	298.15	ScAl3 alloy: Sc 0.25	experimental	[3] Cacciamani 1999	Table 1, p. 2, row 11 report
Lattice a	4.101 Å	298.15	ScAl3 alloy: Sc 0.25	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 10 report
Lattice b	7.6 Å	298.15	Al2Sc alloy: Sc 0.333333	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 7 report
Lattice b	4.1 Å	298.15	Al3Sc alloy: Sc 0.25	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 6 report
Lattice b	3.45 Å	298.15	AlSc alloy: Sc 0.5	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 8 report
Lattice b	4.888 Å	298.15	AlSc2 alloy: Sc 0.666667	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 9 report
Lattice b	9.882 Å	298.15	ScAl alloy: Sc 0.5	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 5 report
Lattice c	7.6 Å	298.15	Al2Sc alloy: Sc 0.333333	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 7 report
Lattice c	4.1 Å	298.15	Al3Sc alloy: Sc 0.25	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 6 report
Lattice c	3.45 Å	298.15	AlSc alloy: Sc 0.5	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 8 report
Lattice c	6.166 Å	298.15	AlSc2 alloy: Sc 0.666667	model	[4] Hu 2018 cites Villars 1997	Table 1, p. 2, row 9 report
Lattice c	6.166 Å	298.15	AlSc2 AlSc2: Al 0.333, Sc 0.667	unspecified	[1] Murray 1998	Table 3, p. 1, row 5 report
Lattice c	6.167 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 2 report
Lattice c	6.166 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999 cites Eymond 1969 doi	Table 1, p. 2, row 1 report
Lattice c	6.173 Å	298.15	Sc2Al alloy: Sc 0.666667	experimental	[3] Cacciamani 1999	Table 1, p. 2, row 3 report
Lattice c	3.652 Å	298.15	ScAl alloy: Sc 0.5	experimental	[3] Cacciamani 1999 cites Schuster 1985 doi	Table 1, p. 2, row 5 report

Sources

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

J. L. Murray, The Al-Sc (aluminum-scandium) system, JPE 19, 380-384 (1998). doi:10.1361/105497198770342120
H. Bo, L.B. Liu, Z.P. Jin, Thermodynamic analysis of Al–Sc, Cu–Sc and Al–Cu–Sc system, Journal of Alloys and Compounds 490, 318-325 (2010). doi:10.1016/j.jallcom.2009.10.003
G. Cacciamani, P. Riani, G. Borzone, N. Parodi, A. Saccone, R. Ferro et al., Thermodynamic measurements and assessment of the Al–Sc system, Intermetallics 7, 101-108 (1999). doi:10.1016/s0966-9795(98)00022-3
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

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}
}