Al–Ir system

116 accepted literature values from 3 paper(s) (experimental 43, model 37, DFT 32, unspecified 4); 4 calculated phase diagram(s). 2 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	43
model	37
DFT	32
unspecified	4

Accepted values by property group
Property group	Values
invariant reaction	17
phase equilibrium	15
formation	25
crystal structure	59

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
AlIr-06Jia.tdb	C. Jiang, B. Gleeson, Acta Mater., 54, 4101-10(2006). doi:10.1016/j.actamat.2006.03.058	`42aa80aa2bf0ad5b25f0fb3e2777a4145e4b32d8b3d8d749d3ca2410832f28f2`	viewer · TDB · JSON
AlIr-07Abe.tdb	T. Abe, M. Ode, H. Murakami, C.S. Oh, C. Kocer, Y. Yamabe-Mitarai, H. Onodera, Mater. Sci. Forum, 539-543, 2389-94(2007).	`28d8af6daff1f08ab2b6bc3fbe9f298ad834c1573f9b330f232b02358373e5a4`	viewer · TDB · JSON
AlIr-08Abe.tdb	T. Abe, C. Kocer, M. Ode, H. Murakami, Y. Yamabe-Mitarai, K. Hashimoto, H. Onodera, Calphad, 32, 686-928(2008). doi:10.1016/j.calphad.2008.09.014	`ccf8c59d9ed25c09cd5a6869aaee7fa44cbd244587e83e3459535d9f210762f9`	viewer · TDB · JSON
AlIr-08Zha.tdb	C. Zhang, J. Zhu, Y. Yang, F. Zhang, Y.A. Chang, Scripta Mater., 59, 403-6(2008). doi:10.1016/j.scriptamat.2008.04.012	`c64bc19a38e734398eae114eabbb338a04cefa1b1e827347f32504c6afdbfaa7`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlIr-06Jia.tdb	2165.07	ALIR_B2 (x(Ir) 0.5) + LIQUID (x(Ir) 0.68065) + FCC_A1 (x(Ir) 0.84692)
AlIr-06Jia.tdb	2165.07	ALIR_B2 (x(Ir) 0.5) + LIQUID (x(Ir) 0.68066) + FCC_A1 (x(Ir) 0.84693)
AlIr-06Jia.tdb	1932.28	AL5IR2 (x(Ir) 0.27) + LIQUID (x(Ir) 0.29541) + ALIR_B2 (x(Ir) 0.5)
AlIr-06Jia.tdb	1932.28	AL5IR2 (x(Ir) 0.27) + LIQUID (x(Ir) 0.29564) + ALIR_B2 (x(Ir) 0.5)
AlIr-06Jia.tdb	1713.78	LIQUID (x(Ir) 0.15513) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27)
AlIr-06Jia.tdb	1713.78	LIQUID (x(Ir) 0.15522) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27)
AlIr-06Jia.tdb	1287.53	LIQUID (x(Ir) 0.0703) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-06Jia.tdb	1287.53	LIQUID (x(Ir) 0.07026) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-06Jia.tdb	1287.53	LIQUID (x(Ir) 0.07033) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-06Jia.tdb	1168.76	LIQUID (x(Ir) 0.0519) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-06Jia.tdb	1168.76	LIQUID (x(Ir) 0.05187) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-06Jia.tdb	1168.76	LIQUID (x(Ir) 0.05193) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-06Jia.tdb	1149.54	LIQUID (x(Ir) 0.04893) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-06Jia.tdb	1149.54	LIQUID (x(Ir) 0.04897) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-06Jia.tdb	1149.54	LIQUID (x(Ir) 0.0489) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-06Jia.tdb	920.91	FCC_A1 (x(Ir) 0.00145) + LIQUID (x(Ir) 0.0132) + AL9IR2 (x(Ir) 0.18182)
AlIr-06Jia.tdb	920.91	FCC_A1 (x(Ir) 0.00143) + LIQUID (x(Ir) 0.01314) + AL9IR2 (x(Ir) 0.18182)
AlIr-07Abe.tdb	2315.64	ALIR_B2 (x(Ir) 0.51628) + LIQUID (x(Ir) 0.68889) + FCC_A1 (x(Ir) 0.82153)
AlIr-07Abe.tdb	1887.12	LIQUID (x(Ir) 0.19738) + AL5IR2 (x(Ir) 0.27027) + ALIR_B2 (x(Ir) 0.4753)
AlIr-07Abe.tdb	1746.92	LIQUID (x(Ir) 0.13424) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-07Abe.tdb	1746.92	LIQUID (x(Ir) 0.13419) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-07Abe.tdb	1746.92	LIQUID (x(Ir) 0.13425) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-07Abe.tdb	1282.94	LIQUID (x(Ir) 0.03921) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-07Abe.tdb	1282.94	LIQUID (x(Ir) 0.03921) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-07Abe.tdb	1282.94	LIQUID (x(Ir) 0.03926) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-07Abe.tdb	1147.59	LIQUID (x(Ir) 0.02323) + AL9IR2 (x(Ir) 0.18182) + AL13IR4 (x(Ir) 0.23529)
AlIr-07Abe.tdb	1147.59	LIQUID (x(Ir) 0.02327) + AL9IR2 (x(Ir) 0.18182) + AL13IR4 (x(Ir) 0.23529)
AlIr-07Abe.tdb	1147.59	LIQUID (x(Ir) 0.0232) + AL9IR2 (x(Ir) 0.18182) + AL13IR4 (x(Ir) 0.23529)
AlIr-07Abe.tdb	930.3	FCC_A1 (x(Ir) 1.200e-4) + LIQUID (x(Ir) 0.00428) + AL9IR2 (x(Ir) 0.18182)
AlIr-07Abe.tdb	930.3	FCC_A1 (x(Ir) 1.200e-4) + LIQUID (x(Ir) 0.00418) + AL9IR2 (x(Ir) 0.18182)
AlIr-08Abe.tdb	2186.34	B2_BCC (x(Ir) 0.52718) + LIQUID (x(Ir) 0.69064) + FCC_4SL (x(Ir) 0.85996)
AlIr-08Abe.tdb	1908.94	AL5IR2 (x(Ir) 0.27027) + LIQUID (x(Ir) 0.30068) + B2_BCC (x(Ir) 0.49853)
AlIr-08Abe.tdb	1743.69	LIQUID (x(Ir) 0.15996) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-08Abe.tdb	1743.69	LIQUID (x(Ir) 0.16009) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-08Abe.tdb	1707.94	LIQUID (x(Ir) 0.14611) + AL28IR9 (x(Ir) 0.24324) + AL3IR_D018 (x(Ir) 0.25)
AlIr-08Abe.tdb	1707.94	LIQUID (x(Ir) 0.14632) + AL28IR9 (x(Ir) 0.24324) + AL3IR_D018 (x(Ir) 0.25)
AlIr-08Abe.tdb	1280.83	LIQUID (x(Ir) 0.01875) + AL13IR4 (x(Ir) 0.23529) + AL28IR9 (x(Ir) 0.24324)
AlIr-08Abe.tdb	1280.83	LIQUID (x(Ir) 0.01879) + AL13IR4 (x(Ir) 0.23529) + AL28IR9 (x(Ir) 0.24324)
AlIr-08Abe.tdb	1280.83	LIQUID (x(Ir) 0.0187) + AL13IR4 (x(Ir) 0.23529) + AL28IR9 (x(Ir) 0.24324)
AlIr-08Abe.tdb	1221.61	LIQUID (x(Ir) 0.00995) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Abe.tdb	1221.61	LIQUID (x(Ir) 0.00993) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Abe.tdb	1221.61	LIQUID (x(Ir) 0.00996) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Abe.tdb	1200.87	LIQUID (x(Ir) 0.00775) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Abe.tdb	1200.87	LIQUID (x(Ir) 0.00777) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Abe.tdb	1200.87	LIQUID (x(Ir) 0.00773) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Abe.tdb	933.44	FCC_4SL (x(Ir) 1.000e-5) + LIQUID (x(Ir) 6.000e-5) + AL9IR2 (x(Ir) 0.18182)
AlIr-08Abe.tdb	933.44	FCC_4SL (x(Ir) 1.000e-5) + LIQUID (x(Ir) 6.000e-5) + AL9IR2 (x(Ir) 0.18182)
AlIr-08Zha.tdb	2196.15	ALIR_B2 (x(Ir) 0.52966) + LIQUID (x(Ir) 0.66337) + FCC_4SL (x(Ir) 0.81613)
AlIr-08Zha.tdb	1927.22	AL5IR2 (x(Ir) 0.27027) + LIQUID (x(Ir) 0.3075) + ALIR_B2 (x(Ir) 0.49716)
AlIr-08Zha.tdb	1731.76	LIQUID (x(Ir) 0.16277) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-08Zha.tdb	1731.76	LIQUID (x(Ir) 0.1628) + AL3IR_D018 (x(Ir) 0.25) + AL5IR2 (x(Ir) 0.27027)
AlIr-08Zha.tdb	1259.77	LIQUID (x(Ir) 0.07064) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-08Zha.tdb	1259.77	LIQUID (x(Ir) 0.07063) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-08Zha.tdb	1259.77	LIQUID (x(Ir) 0.07066) + AL13IR4 (x(Ir) 0.23529) + AL3IR_D018 (x(Ir) 0.25)
AlIr-08Zha.tdb	1187.71	LIQUID (x(Ir) 0.05912) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Zha.tdb	1187.71	LIQUID (x(Ir) 0.05911) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Zha.tdb	1187.71	LIQUID (x(Ir) 0.05917) + AL45IR13 (x(Ir) 0.22414) + AL13IR4 (x(Ir) 0.23529)
AlIr-08Zha.tdb	1161.82	LIQUID (x(Ir) 0.05484) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Zha.tdb	1161.82	LIQUID (x(Ir) 0.05486) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Zha.tdb	1161.82	LIQUID (x(Ir) 0.05479) + AL9IR2 (x(Ir) 0.18182) + AL45IR13 (x(Ir) 0.22414)
AlIr-08Zha.tdb	920.49	FCC_A1 (x(Ir) 2.000e-5) + LIQUID (x(Ir) 0.01362) + AL9IR2 (x(Ir) 0.18182)
AlIr-08Zha.tdb	920.49	FCC_4SL (x(Ir) 2.000e-5) + LIQUID (x(Ir) 0.01357) + AL9IR2 (x(Ir) 0.18182)
AlIr-08Zha.tdb	920.49	FCC_4SL (x(Ir) 2.000e-5) + LIQUID (x(Ir) 0.01357) + AL9IR2 (x(Ir) 0.18182)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlIr-06Jia · CALPHAD hull AlIr-07Abe · CALPHAD hull AlIr-08Zha

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Ir system (17)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2404	congruent melting: Liquid = AlIr	Liquid: Al 0.5, Ir 0.5; AlIr: Al 0.5, Ir 0.5	model	[1] JIANG 2006	Table 6, p. 8, row 5 report
2393	congruent melting: Liquid = AlIr	Liquid: Al 0.5, Ir 0.5; AlIr: Al 0.5, Ir 0.5	experimental	[1] JIANG 2006 cites Axler 1989	Table 6, p. 8, row 6 report
2331	eutectic: Liquid = AlIr + fcc	Liquid: Ir 0.7; AlIr: Al 0.5, Ir 0.5; fcc: Ir 0.82	experimental	[1] JIANG 2006 cites Axler 1989	Table 6, p. 8, row 3 report
2173	eutectic: Liquid = AlIr + fcc	AlIr: Al 0.5, Ir 0.5	experimental	[1] JIANG 2006 cites Yamabe-Mitarai 2003	Table 6, p. 8, row 2 report
2165	eutectic: Liquid = AlIr + fcc	Liquid: Ir 0.681; AlIr: Al 0.5, Ir 0.5; fcc: Ir 0.847	model	[1] JIANG 2006	Table 6, p. 8, row 1 report
1932	eutectic: Liquid = AlIr + Al2.7Ir	Liquid: Ir 0.295; AlIr: Al 0.5, Ir 0.5; Al2.7Ir: Al 0.73, Ir 0.27	model	[1] JIANG 2006	Table 6, p. 8, row 7 report
1873	eutectic: Liquid = AlIr + Al2.7Ir	AlIr: Al 0.5, Ir 0.5; Al2.7Ir: Al 0.73, Ir 0.27	experimental	[1] JIANG 2006 cites Lee 1989	Table 6, p. 8, row 8 report
1723	peritectic: Liquid + Al2.7Ir = Al3Ir	Al2.7Ir: Al 0.73, Ir 0.27; Al3Ir: Al 0.75, Ir 0.25	experimental	[1] JIANG 2006 cites Axler 1989	Table 6, p. 8, row 11 report
1723	peritectic: Liquid + Al2.7Ir = Al3Ir	Liquid: Ir 0.158; Al2.7Ir: Al 0.73, Ir 0.27; Al3Ir: Al 0.75, Ir 0.25	model	[1] JIANG 2006	Table 6, p. 8, row 10 report
1288	peritectic: Liquid + Al3Ir = Al13Ir4	Al3Ir: Al 0.75, Ir 0.25; Al13Ir4: Al 0.764706, Ir 0.235294	experimental	[1] JIANG 2006 cites Axler 1989	Table 6, p. 8, row 13 report
1288	peritectic: Liquid + Al3Ir = Al13Ir4	Liquid: Ir 0.07; Al3Ir: Al 0.75, Ir 0.25; Al13Ir4: Al 0.764706, Ir 0.235294	model	[1] JIANG 2006	Table 6, p. 8, row 12 report
1168	peritectic: Liquid + Al13Ir4 = Al45Ir13	Al13Ir4: Al 0.764706, Ir 0.235294; Al45Ir13: Al 0.775862, Ir 0.224138	experimental	[1] JIANG 2006 cites Bostrom 2005	Table 6, p. 8, row 15 report
1168	peritectic: Liquid + Al13Ir4 = Al45Ir13	Liquid: Ir 0.052; Al13Ir4: Al 0.764706, Ir 0.235294; Al45Ir13: Al 0.775862, Ir 0.224138	model	[1] JIANG 2006	Table 6, p. 8, row 14 report
1150	peritectic: Liquid + Al45Ir13 = Al9Ir2	Liquid: Ir 0.049; Al45Ir13: Al 0.775862, Ir 0.224138; Al9Ir2: Al 0.818182, Ir 0.181818	model	[1] JIANG 2006	Table 6, p. 8, row 16 report
1149	peritectic: Liquid + Al45Ir13 = Al9Ir2	Al45Ir13: Al 0.775862, Ir 0.224138; Al9Ir2: Al 0.818182, Ir 0.181818	experimental	[1] JIANG 2006 cites Bostrom 2005	Table 6, p. 8, row 17 report
923	eutectic: Liquid = fcc + Al9Ir2	fcc: Ir 0.001; Al9Ir2: Al 0.818182, Ir 0.181818	experimental	[1] JIANG 2006 cites Axler 1989	Table 6, p. 8, row 19 report
921	eutectic: Liquid = fcc + Al9Ir2	Liquid: Ir 0.013; fcc: Ir 0.001; Al9Ir2: Al 0.818182, Ir 0.181818	model	[1] JIANG 2006	Table 6, p. 8, row 18 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–Ir system (25)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Al13Ir4	Al13Ir4	-64.4 kJ/mol-atom		model		-57.448 (oqmd-1782493)	[2] Abe 2008	Table 2, p. 3, row 8 report
Al13Ir4	Al13Ir4	-64.1 kJ/mol-atom	0	model		-57.448 (oqmd-1782493)	[1] JIANG 2006	Table 4, p. 4, row 2 report
Al13Ir4		-63.5 kJ/mol-atom		DFT			[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 9 report
Al13Ir4	Al13Ir4	-63.5 kJ/mol-atom	0	model		-57.448 (oqmd-1782493)	[1] JIANG 2006	Table 4, p. 4, row 2 report
Al13Ir4	Al13Ir4	-62.8 kJ/mol-atom	0	model		-57.448 (oqmd-1782493)	[1] JIANG 2006	Table 4, p. 4, row 2 report
Al2.7Ir		-69.7 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 3 report
Al2.7Ir		-68.8 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 6 report
Al2.7Ir		-68.3 kJ/mol-atom ± 0.5	0	model			[1] JIANG 2006	Table 4, p. 4, row 6 report
Al2.7Ir		-68.3 kJ/mol-atom		DFT			[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 16 report
Al2.7Ir		-67.8 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 6 report
Al3Ir		-65.7 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 2 report
Al45Ir13		-63 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 1 report
Al45Ir13		-61.8 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 4 report
Al45Ir13		-61.4 kJ/mol-atom ± 0.3	0	model			[1] JIANG 2006	Table 4, p. 4, row 4 report
Al45Ir13		-61.1 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 4 report
Al45Ir13		-60.6 kJ/mol-atom	0	model			[1] JIANG 2006	Table 4, p. 4, row 1 report
Al9Ir2		-52 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 1 report
AlIr		-92.8 kJ/mol-atom ± 1.8		DFT			[1] JIANG 2006 cites Jung 1992	Table 1, p. 2, row 4 report
AlIr		-91.9 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 3 report
Al–Ir fcc		-50.2 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 7 report
Al–Ir fcc		-41.1 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 6 report
Al–Ir fcc		-32.4 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 8 report
Al–Ir fcc		-5.7 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 5 report
Al–Ir fcc		-3.9 kJ/mol-atom	0	DFT			[1] JIANG 2006	Table 1, p. 2, row 9 report
B2-AlIr	AlIr	-118 kJ/mol-atom	298.15	experimental	-92.527 (mp-aaaaacun)	-91.306 (oqmd-10480)	[2] Abe 2008 cites Ode 2005 doi	Table 2, p. 3, row 20 report

Other properties

Phase equilibrium (15)

Phase equilibrium, Al–Ir system
Property	T (K)	Phases / composition	Class	Source	Location
Phase assemblage	1403.15	B2 + (Ir) alloy: Ir 1	experimental	[3] ZHANG 2008	Table 1, p. 2, row 15 report
Phase assemblage	1573.15	B2 + (Ir) alloy: Ir 1	experimental	[3] ZHANG 2008	Table 1, p. 2, row 17 report
Phase assemblage	1773.15	B2 + (Ir) alloy: Ir 1	experimental	[3] ZHANG 2008	Table 1, p. 2, row 16 report
Phase composition	1403.15	B2 B2: Al 0.4983, Ir 0.5017	experimental	[3] ZHANG 2008	Table 1, p. 2, row 3 report
Phase composition	1403.15	B2 + (Ir) B2: Al 0.4899, Ir 0.5101; (Ir): Al 0.0598, Ir 0.9402	experimental	[3] ZHANG 2008	Table 1, p. 2, row 9 report
Phase composition	1403.15	B2 + (Ir) B2: Al 0.4928, Ir 0.5072	experimental	[3] ZHANG 2008	Table 1, p. 2, row 6 report
Phase composition	1403.15	B2 + (Ir) B2: Al 0.4889, Ir 0.5111; (Ir): Al 0.0602, Ir 0.9398	experimental	[3] ZHANG 2008	Table 1, p. 2, row 12 report
Phase composition	1573.15	B2 B2: Al 0.4993, Ir 0.5007	experimental	[3] ZHANG 2008	Table 1, p. 2, row 2 report
Phase composition	1573.15	B2 + (Ir) B2: Al 0.4821, Ir 0.5179; (Ir): Al 0.0801, Ir 0.9199	experimental	[3] ZHANG 2008	Table 1, p. 2, row 11 report
Phase composition	1573.15	B2 + (Ir) B2: Al 0.481, Ir 0.519; (Ir): Al 0.0792, Ir 0.9208	experimental	[3] ZHANG 2008	Table 1, p. 2, row 8 report
Phase composition	1573.15	B2 + (Ir) B2: Al 0.4879, Ir 0.5121	experimental	[3] ZHANG 2008	Table 1, p. 2, row 5 report
Phase composition	1773.15	B2 B2: Al 0.4988, Ir 0.5012	experimental	[3] ZHANG 2008	Table 1, p. 2, row 1 report
Phase composition	1773.15	B2 + (Ir) B2: Al 0.4903, Ir 0.5097	experimental	[3] ZHANG 2008	Table 1, p. 2, row 4 report
Phase composition	1773.15	B2 + (Ir) B2: Al 0.4778, Ir 0.5222; (Ir): Al 0.0987, Ir 0.9013	experimental	[3] ZHANG 2008	Table 1, p. 2, row 7 report
Phase composition	1773.15	B2 + (Ir) B2: Al 0.4795, Ir 0.5205; (Ir): Al 0.0983, Ir 0.9017	experimental	[3] ZHANG 2008	Table 1, p. 2, row 10 report

Crystal structure (59)

Crystal structure, Al–Ir system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a printed: a	7.674 Å		Al2.7Ir alloy: Ir 0.27027	model	[2] Abe 2008	Table 2, p. 3, row 15 report
Lattice a printed: a	12.286 Å		Al28Ir9 alloy: Ir 0.243243	model	[2] Abe 2008	Table 2, p. 3, row 10 report
Lattice a printed: a	12.286 Å		Al28Ir9 alloy: Ir 0.243243	experimental	[2] Abe 2008 cites Pavlyuchkov 2008 doi	Table 2, p. 3, row 11 report
Lattice a printed: a	4.246 Å	0	Al3Ir alloy: Ir 0.25	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 14 report
Lattice a printed: a	4.3 Å	0	Al3Ir alloy: Ir 0.25	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 13 report
Lattice a printed: a	4.25 Å	0	Al3Ir alloy: Ir 0.25	model	[2] Abe 2008	Table 2, p. 3, row 12 report
Lattice a	4.3 Å	0	Al3Ir alloy: Ir 0.25	DFT	[1] JIANG 2006	Table 2, p. 2, row 3 report
Lattice a printed: a	16.76 Å		Al45Ir13 alloy: Ir 0.224138	model	[2] Abe 2008	Table 2, p. 3, row 6 report
Lattice a printed: a	16.771 Å		Al45Ir13 alloy: Ir 0.224138	unspecified	[2] Abe 2008 cites Pavlyuchkov 2008 doi	Table 2, p. 3, row 7 report
Lattice a printed: a	8.906 Å	0	Al9Ir2 alloy: Ir 0.181818	model	[2] Abe 2008	Table 2, p. 3, row 3 report
Lattice a	6.4 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
Lattice a printed: a	8.732 Å		Al9Ir2 alloy: Ir 0.181818	experimental	[2] Abe 2008 cites Bostrom 2005 doi	Table 2, p. 3, row 5 report
Lattice a printed: a	8.77 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 4 report
Lattice a	3.02 Å	0	AlIr alloy: Ir 0.5	DFT	[1] JIANG 2006	Table 2, p. 2, row 5 report
Lattice a printed: a	2.985 Å	0	B2-AlIr alloy: Ir 0.5	unspecified	[2] Abe 2008 cites Ferro 1968	Table 2, p. 3, row 19 report
Lattice a printed: a	3.02 Å	0	B2-AlIr alloy: Ir 0.5	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 18 report
Lattice a printed: a	3.028 Å	0	B2-AlIr alloy: Ir 0.5	model	[2] Abe 2008	Table 2, p. 3, row 17 report
Lattice a printed: a	6.184 Å	0	B32-AlIr alloy: Ir 0.5	model	[2] Abe 2008	Table 2, p. 3, row 28 report
Lattice a printed: a	3.878 Å	0	L10-AlIr alloy: Ir 0.5	model	[2] Abe 2008	Table 2, p. 3, row 27 report
Lattice a printed: a	3.877 Å	0	L12-Al3Ir alloy: Ir 0.25	model	[2] Abe 2008	Table 2, p. 3, row 25 report
Lattice a printed: a	3.867 Å	0	L12-AlIr3 alloy: Ir 0.75	model	[2] Abe 2008	Table 2, p. 3, row 26 report
Lattice a	4.25 Å	298.15	Al3Ir alloy: Ir 0.25	experimental	[1] JIANG 2006 cites Edshammar 1967	Table 2, p. 2, row 4 report
Lattice a	6.38 Å	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report
Lattice a	2.98 Å	298.15	AlIr alloy: Ir 0.5	experimental	[1] JIANG 2006 cites Esslinger 1957	Table 2, p. 2, row 6 report
Lattice b	4.3 Å	0	Al3Ir alloy: Ir 0.25	DFT	[1] JIANG 2006	Table 2, p. 2, row 3 report
Lattice b printed: b	12.321 Å		Al45Ir13 alloy: Ir 0.224138	model	[2] Abe 2008	Table 2, p. 3, row 6 report
Lattice b printed: b	12.327 Å		Al45Ir13 alloy: Ir 0.224138	unspecified	[2] Abe 2008 cites Pavlyuchkov 2008 doi	Table 2, p. 3, row 7 report
Lattice b printed: b	6.491 Å	0	Al9Ir2 alloy: Ir 0.181818	model	[2] Abe 2008	Table 2, p. 3, row 3 report
Lattice b	6.47 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
Lattice b printed: b	6.43 Å		Al9Ir2 alloy: Ir 0.181818	experimental	[2] Abe 2008 cites Bostrom 2005 doi	Table 2, p. 3, row 5 report
Lattice b printed: b	6.47 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 4 report
Lattice b	3.02 Å	0	AlIr alloy: Ir 0.5	DFT	[1] JIANG 2006	Table 2, p. 2, row 5 report
Lattice b	4.25 Å	298.15	Al3Ir alloy: Ir 0.25	experimental	[1] JIANG 2006 cites Edshammar 1967	Table 2, p. 2, row 4 report
Lattice b	6.43 Å	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report
Lattice b	2.98 Å	298.15	AlIr alloy: Ir 0.5	experimental	[1] JIANG 2006 cites Esslinger 1957	Table 2, p. 2, row 6 report
Lattice c printed: c	27.341 Å		Al28Ir9 alloy: Ir 0.243243	model	[2] Abe 2008	Table 2, p. 3, row 10 report
Lattice c printed: c	27.375 Å		Al28Ir9 alloy: Ir 0.243243	experimental	[2] Abe 2008 cites Pavlyuchkov 2008 doi	Table 2, p. 3, row 11 report
Lattice c printed: c	7.756 Å	0	Al3Ir alloy: Ir 0.25	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 14 report
Lattice c printed: c	7.79 Å	0	Al3Ir alloy: Ir 0.25	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 13 report
Lattice c printed: c	7.76 Å	0	Al3Ir alloy: Ir 0.25	model	[2] Abe 2008	Table 2, p. 3, row 12 report
Lattice c	7.79 Å	0	Al3Ir alloy: Ir 0.25	DFT	[1] JIANG 2006	Table 2, p. 2, row 3 report
Lattice c printed: c	17.425 Å		Al45Ir13 alloy: Ir 0.224138	model	[2] Abe 2008	Table 2, p. 3, row 6 report
Lattice c printed: c	17.437 Å		Al45Ir13 alloy: Ir 0.224138	unspecified	[2] Abe 2008 cites Pavlyuchkov 2008 doi	Table 2, p. 3, row 7 report
Lattice c printed: c	6.463 Å	0	Al9Ir2 alloy: Ir 0.181818	model	[2] Abe 2008	Table 2, p. 3, row 3 report
Lattice c	8.77 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
Lattice c printed: c	6.378 Å		Al9Ir2 alloy: Ir 0.181818	experimental	[2] Abe 2008 cites Bostrom 2005 doi	Table 2, p. 3, row 5 report
Lattice c printed: c	6.4 Å	0	Al9Ir2 alloy: Ir 0.181818	DFT	[2] Abe 2008 cites Jiang 2006	Table 2, p. 3, row 4 report
Lattice c	3.02 Å	0	AlIr alloy: Ir 0.5	DFT	[1] JIANG 2006	Table 2, p. 2, row 5 report
Lattice c	7.76 Å	298.15	Al3Ir alloy: Ir 0.25	experimental	[1] JIANG 2006 cites Edshammar 1967	Table 2, p. 2, row 4 report
Lattice c	8.73 Å	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report
Lattice c	2.98 Å	298.15	AlIr alloy: Ir 0.5	experimental	[1] JIANG 2006 cites Esslinger 1957	Table 2, p. 2, row 6 report
lattice alpha	90 °	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
lattice alpha	90 °	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report
lattice beta	95.1 °	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
lattice beta	94.8 °	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report
lattice c a	1.81 not_printed	0	Al3Ir alloy: Ir 0.25	DFT	[1] JIANG 2006	Table 2, p. 2, row 3 report
lattice c a	1.83 not_printed	298.15	Al3Ir alloy: Ir 0.25	experimental	[1] JIANG 2006 cites Edshammar 1967	Table 2, p. 2, row 4 report
lattice gamma	90 °	0	Al9Ir2 alloy: Ir 0.181818	DFT	[1] JIANG 2006	Table 2, p. 2, row 1 report
lattice gamma	90 °	298.15	Al9Ir2 alloy: Ir 0.181818	experimental	[1] JIANG 2006 cites Edshammar 1968	Table 2, p. 2, row 2 report

Sources

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

C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006). doi:10.1016/j.actamat.2006.03.058
T. Abe, C. Kocer, M. Ode, H. Murakami, Y. Yamabe-Mitarai, K. Hashimoto et al., Thermodynamic re-assessment of the Al–Ir system, Calphad 32, 686-692 (2008). doi:10.1016/j.calphad.2008.09.014
C ZHANG, J ZHU, Y YANG, F ZHANG, Y CHANG, Experimental investigation and thermodynamic reassessment of the Ir-rich zone in the Al–Ir system, Scripta Materialia 59, 403-406 (2008). doi:10.1016/j.scriptamat.2008.04.012

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}
}