Al–Ir phases

13 phases (tier A 6, tier B 1, tier C 2, liquid 1, needs_review 3); 11 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Al–Ir system page · Markdown · field reference

Phases of the Al–Ir system (13)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AL13IR4 phase:al-ir:al13ir4		needs_review	stable in 4 of 4 calculated diagram(s): 300–1287.53 K, x(Ir) 0.23529–0.23529	9	4
AL28IR9 phase:al-ir:al28ir9	Al28Ir9 · hP236 · P31c (159)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1707.94 K, x(Ir) 0.24324–0.24324	4	1
AL3IR_D018 phase:al-ir:al3ir-d018	Na3As · D0_18 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1746.92 K, x(Ir) 0.25–0.25	11	4
AL45IR13 phase:al-ir:al45ir13	Al45Ir13 · oP236 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1221.61 K, x(Ir) 0.22414–0.22414	15	3
AL5IR2 phase:al-ir:al5ir2		needs_review	stable in 4 of 4 calculated diagram(s): 300–1951.96 K, x(Ir) 0.27–0.27027	4	4
AL9IR2 phase:al-ir:al9ir2	Al9Co2 · mP22 · P2_1/c (14)	tier B: DFT-supported (unique MP + OQMD match)	stable in 4 of 4 calculated diagram(s): 300–1200.87 K, x(Ir) 0.18182–0.18182	26	4
ALIR_B2 phase:al-ir:alir-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2446.67 K, x(Ir) 0.4753–0.52966	29	3
BCC_A2 phase:al-ir:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 4 calculated diagram(s)	0	5
B2_BCC phase:al-ir:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2393.55 K, x(Ir) 0.49853–0.52718	4	1
FCC_4SL phase:al-ir:fcc-4sl		needs_review	stable in 2 of 2 calculated diagram(s): 300–3998.99 K, x(Ir) 0–1	3	2
FCC_A1 phase:al-ir:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–3999 K, x(Ir) 0–1	5	6
HCP_A3 phase:al-ir:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 4 calculated diagram(s)	0	4
LIQUID phase:al-ir:liquid	liquid	liquid	stable in 4 of 4 calculated diagram(s): 920.49–4000 K, x(Ir) 0–1	17	4

AL13IR4 (Al–Ir)

Id: phase:al-ir:al13ir4; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_rows_disagree
Candidate (literature_printed): (Al13Ir4) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Al13Ir4) — Hallstedt 2025 mmc2 row for AL13IR4: Al13Ir4
Candidate (sgte_mmc2): Al28Ir9 · hP236 · P31c (159) — Hallstedt 2025 mmc2 row for AL13IR4: Al13Ir4
Candidate (tdb_comment): Al28Ir9 · hP236 · P31c — AlIr-06Jia.tdb: 'Prototype Al28Ir9 (hP236, P31c)'
Candidate (tdb_comment): Al28Ir9 · hP236 · P31c — AlIr-07Abe.tdb: 'Prototype Al28Ir9 (hP236, P31c)'
Candidate (tdb_comment): Al28Ir9 · hP236 · P31c — AlIr-08Zha.tdb: 'Prototype Al28Ir9 (hP236, P31c)'
Stoichiometry: Al 0.7647, Ir 0.2353
Stability: stable in 4 of 4 calculated diagram(s): 300–1287.53 K, x(Ir) 0.23529–0.23529
Literature: 9 values (9 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:al-ir:al13ir4
paper: paper:10.1016/j.actamat.2006.03.058:Al13Ir4, paper:10.1016/j.calphad.2008.09.014:Al13Ir4
tdb: tdb:AlIr-06Jia.tdb:AL13IR4, tdb:AlIr-07Abe.tdb:AL13IR4, tdb:AlIr-08Abe.tdb:AL13IR4, tdb:AlIr-08Zha.tdb:AL13IR4

TDB models of AL13IR4 (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: AL13IR4, type code %, sha256 42aa80aa2bf0ad5b…

53: PHASE AL13IR4 % 2 13 4 !
54: CONST AL13IR4 : AL : IR : !

AlIr-07Abe.tdb: AL13IR4, type code %, sha256 28d8af6daff1f08a…

50: PHASE AL13IR4 % 2 13 4 !
51: CONST AL13IR4 : AL : IR : !

AlIr-08Abe.tdb: AL13IR4, type code %, sha256 ccf8c59d9ed25c09…

81: PHASE AL13IR4 % 2 13 4 !
82: CONST AL13IR4 : AL : IR : !

AlIr-08Zha.tdb: AL13IR4, type code %, sha256 c64bc19a38e73439…

71: PHASE AL13IR4 % 2 13 4 !
72: CONST AL13IR4 : AL : IR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

AL28IR9 (Al–Ir)

Id: phase:al-ir:al28ir9; status assigned
Structure: Al28Ir9 · hP236 · P31c (159); type st:al28ir9-hp236; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.7568, Ir 0.2432
Stability: stable in 1 of 1 calculated diagram(s): 300–1707.94 K, x(Ir) 0.24324–0.24324
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:al-ir:al28ir9
paper: paper:10.1016/j.calphad.2008.09.014:Al28Ir9
tdb: tdb:AlIr-08Abe.tdb:AL28IR9

TDB models of AL28IR9 (1): PHASE and CONSTITUENT statements as written

AlIr-08Abe.tdb: AL28IR9, type code %, sha256 ccf8c59d9ed25c09…

86: PHASE AL28IR9 % 2 28 9 !
87: CONST AL28IR9 : AL : IR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.intermet.2008.03.006 D. Pavlyuchkov, B. Grushko, T. Ya. Velikanova, A contribution to the Al–Ir phase diagram, Intermetallics 16, 801-806 (2008).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2005.06.027 S. Katrych, V. Gramlich, W. Steurer, Trigonal Ir9Al28, a new structure type and approximant to decagonal quasicrystals, Journal of Alloys and Compounds 407, 132-140 (2006).
cited as the source of values for this phase

AL3IR_D018 (Al–Ir)

Id: phase:al-ir:al3ir-d018; status assigned
Structure: Na3As · D0_18 · hP8 · P6_3/mmc (194); type st:d0-18-na3as-hp8; tier A: standard phase name; confidence high
Stoichiometry: Al 0.7500, Ir 0.2500
Stability: stable in 4 of 4 calculated diagram(s): 300–1746.92 K, x(Ir) 0.25–0.25
Literature: 11 values (11 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:al-ir:al3ir-d018
paper: paper:10.1016/j.actamat.2006.03.058:Al3Ir, paper:10.1016/j.calphad.2008.09.014:Al3Ir
tdb: tdb:AlIr-06Jia.tdb:AL3IR_D018, tdb:AlIr-07Abe.tdb:AL3IR_D018, tdb:AlIr-08Abe.tdb:AL3IR_D018, tdb:AlIr-08Zha.tdb:AL3IR_D018

TDB models of AL3IR_D018 (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: AL3IR_D018, type code %, sha256 42aa80aa2bf0ad5b…

58: PHASE AL3IR_D018 % 2 3 1 !
59: CONST AL3IR_D018 : AL : IR : !

AlIr-07Abe.tdb: AL3IR_D018, type code %, sha256 28d8af6daff1f08a…

55: PHASE AL3IR_D018 % 2 3 1 !
56: CONST AL3IR_D018 : AL : IR : !

AlIr-08Abe.tdb: AL3IR_D018, type code %, sha256 ccf8c59d9ed25c09…

91: PHASE AL3IR_D018 % 2 3 1 !
92: CONST AL3IR_D018 : AL : IR : !

AlIr-08Zha.tdb: AL3IR_D018, type code %, sha256 c64bc19a38e73439…

76: PHASE AL3IR_D018 % 2 3 1 !
77: CONST AL3IR_D018 : AL : IR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

AL45IR13 (Al–Ir)

Id: phase:al-ir:al45ir13; status assigned
Structure: Al45Ir13 · oP236 · Pnma (62); type st:al45ir13-op236; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.7759, Ir 0.2241
Stability: stable in 3 of 3 calculated diagram(s): 300–1221.61 K, x(Ir) 0.22414–0.22414
Literature: 15 values (15 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-ir:al45ir13
paper: paper:10.1016/j.actamat.2006.03.058:Al45Ir13, paper:10.1016/j.calphad.2008.09.014:Al45Ir13
tdb: tdb:AlIr-06Jia.tdb:AL45IR13, tdb:AlIr-08Abe.tdb:AL45IR13, tdb:AlIr-08Zha.tdb:AL45IR13

TDB models of AL45IR13 (3): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: AL45IR13, type code %, sha256 42aa80aa2bf0ad5b…

48: PHASE AL45IR13 % 2 45 13 !
49: CONST AL45IR13 : AL : IR : !

AlIr-08Abe.tdb: AL45IR13, type code %, sha256 ccf8c59d9ed25c09…

76: PHASE AL45IR13 % 2 45 13 !
77: CONST AL45IR13 : AL : IR : !

AlIr-08Zha.tdb: AL45IR13, type code %, sha256 c64bc19a38e73439…

66: PHASE AL45IR13 % 2 45 13 !
67: CONST AL45IR13 : AL : IR : !

Example references (5 of 5; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase
doi:10.1002/zaac.200400418 Magnus Boström, Helge Rosner, Yurii Prots, Ulrich Burkhardt, Yuri Grin, The Co2Al9 Structure Type Revisited, Zeitschrift anorg allge chemie 631, 534-541 (2005).
cited as the source of values for this phase
doi:10.1016/j.intermet.2008.03.006 D. Pavlyuchkov, B. Grushko, T. Ya. Velikanova, A contribution to the Al–Ir phase diagram, Intermetallics 16, 801-806 (2008).
cited as the source of values for this phase

AL5IR2 (Al–Ir)

Id: phase:al-ir:al5ir2; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; no_structure_token
Candidate (literature_printed): Al2.75Ir · cP60 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Al2.75Ir · cP60 · P23 (195) — Hallstedt 2025 mmc2 row for AL5IR2: Al5Ir2
Candidate (tdb_comment): Al2.75Ir · cP60 · P23 — AlIr-06Jia.tdb: 'Prototype Al2.75Ir (cP60, P23)'
Candidate (tdb_comment): Al2.75Ir · cP60 · P23 — AlIr-07Abe.tdb: 'Prototype Al2.75Ir (cP60, P23)'
Candidate (tdb_comment): Al2.75Ir · cP60 · P23 — AlIr-08Abe.tdb: 'Prototype Al2.75Ir (cP60, P23)'
Candidate (tdb_comment): Al2.75Ir · cP60 · P23 — AlIr-08Zha.tdb: 'Prototype Al2.75Ir (cP60, P23)'
Stability: stable in 4 of 4 calculated diagram(s): 300–1951.96 K, x(Ir) 0.27–0.27027
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-ir:al5ir2
paper: paper:10.1016/j.actamat.2006.03.058:Al2.7Ir
tdb: tdb:AlIr-06Jia.tdb:AL5IR2, tdb:AlIr-07Abe.tdb:AL5IR2, tdb:AlIr-08Abe.tdb:AL5IR2, tdb:AlIr-08Zha.tdb:AL5IR2

TDB models of AL5IR2 (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: AL5IR2, type code %, sha256 42aa80aa2bf0ad5b…

63: PHASE AL5IR2 % 2 0.73 0.27 !
64: CONST AL5IR2 : AL : IR : !

AlIr-07Abe.tdb: AL5IR2, type code %, sha256 28d8af6daff1f08a…

60: PHASE AL5IR2 % 2 2.7 1 !
61: CONST AL5IR2 : AL : IR : !

AlIr-08Abe.tdb: AL5IR2, type code %, sha256 ccf8c59d9ed25c09…

96: PHASE AL5IR2 % 2 2.7 1 !
97: CONST AL5IR2 : AL : IR : !

AlIr-08Zha.tdb: AL5IR2, type code %, sha256 c64bc19a38e73439…

81: PHASE AL5IR2 % 2 2.7 1 !
82: CONST AL5IR2 : AL : IR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

AL9IR2 (Al–Ir)

Id: phase:al-ir:al9ir2; status assigned
Structure: Al9Co2 · mP22 · P2_1/c (14); type st:al9co2-mp22; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Al 0.8182, Ir 0.1818
Stability: stable in 4 of 4 calculated diagram(s): 300–1200.87 K, x(Ir) 0.18182–0.18182
Literature: 26 values (26 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:al-ir:al9ir2
mp: mp:mp-aaaaartr
oqmd: oqmd:oqmd-27853
paper: paper:10.1016/j.actamat.2006.03.058:Al9Ir2, paper:10.1016/j.calphad.2008.09.014:Al9Ir2
tdb: tdb:AlIr-06Jia.tdb:AL9IR2, tdb:AlIr-07Abe.tdb:AL9IR2, tdb:AlIr-08Abe.tdb:AL9IR2, tdb:AlIr-08Zha.tdb:AL9IR2

TDB models of AL9IR2 (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: AL9IR2, type code %, sha256 42aa80aa2bf0ad5b…

43: PHASE AL9IR2 % 2 9 2 !
44: CONST AL9IR2 : AL : IR : !

AlIr-07Abe.tdb: AL9IR2, type code %, sha256 28d8af6daff1f08a…

45: PHASE AL9IR2 % 2 9 2 !
46: CONST AL9IR2 : AL : IR : !

AlIr-08Abe.tdb: AL9IR2, type code %, sha256 ccf8c59d9ed25c09…

71: PHASE AL9IR2 % 2 9 2 !
72: CONST AL9IR2 : AL : IR : !

AlIr-08Zha.tdb: AL9IR2, type code %, sha256 c64bc19a38e73439…

61: PHASE AL9IR2 % 2 9 2 !
62: CONST AL9IR2 : AL : IR : !

Example references (4 of 4; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase
doi:10.1002/zaac.200400418 Magnus Boström, Helge Rosner, Yurii Prots, Ulrich Burkhardt, Yuri Grin, The Co2Al9 Structure Type Revisited, Zeitschrift anorg allge chemie 631, 534-541 (2005).
cited as the source of values for this phase

ALIR_B2 (Al–Ir)

Id: phase:al-ir:alir-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–2446.67 K, x(Ir) 0.4753–0.52966
Literature: 29 values (29 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:al-ir:alir-b2
paper: paper:10.1016/j.actamat.2006.03.058:AlIr, paper:10.1016/j.actamat.2006.03.058:Al–Ir fcc, paper:10.1016/j.scriptamat.2008.04.012:B2
tdb: tdb:AlIr-06Jia.tdb:ALIR_B2, tdb:AlIr-07Abe.tdb:ALIR_B2, tdb:AlIr-08Zha.tdb:ALIR_B2

TDB models of ALIR_B2 (3): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: ALIR_B2, type code %, sha256 42aa80aa2bf0ad5b…

68: PHASE ALIR_B2 % 2 1 1 !
69: CONST ALIR_B2 : AL : IR : !

AlIr-07Abe.tdb: ALIR_B2, type code %, sha256 28d8af6daff1f08a…

65: PHASE ALIR_B2 % 2 1 1 !
66: CONST ALIR_B2 : AL% IR : IR% VA : !

AlIr-08Zha.tdb: ALIR_B2, type code %, sha256 c64bc19a38e73439…

86: PHASE ALIR_B2 % 2 1 1 !
87: CONST ALIR_B2 : AL% IR : IR% VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase

BCC_A2 (Al–Ir)

Id: phase:al-ir:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: not stable in 4 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-ir:bcc-a2
tdb: tdb:AlIr-06Jia.tdb:BCC_A2, tdb:AlIr-07Abe.tdb:BCC_A2, tdb:AlIr-08Abe.tdb:A2_BCC, tdb:AlIr-08Abe.tdb:BCC_A2, tdb:AlIr-08Zha.tdb:BCC_A2

TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: BCC_A2, type code %B, sha256 42aa80aa2bf0ad5b…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : AL IR : VA : !

AlIr-07Abe.tdb: BCC_A2, type code %B, sha256 28d8af6daff1f08a…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : AL IR : VA : !

AlIr-08Abe.tdb: A2_BCC, type code %B, sha256 ccf8c59d9ed25c09…

56: PHASE A2_BCC %B 2 1 3 !
57: CONST A2_BCC : AL IR VA : VA : !

AlIr-08Abe.tdb: BCC_A2, type code %B, sha256 ccf8c59d9ed25c09…

51: PHASE BCC_A2 %B 2 1 3 !
52: CONST BCC_A2 : AL IR : VA : !

AlIr-08Zha.tdb: BCC_A2, type code %B, sha256 c64bc19a38e73439…

51: PHASE BCC_A2 %B 2 1 3 !
52: CONST BCC_A2 : AL IR : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

B2_BCC (Al–Ir)

Id: phase:al-ir:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: AlIr-08Abe.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in AlIr-08Abe.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–2393.55 K, x(Ir) 0.49853–0.52718
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:al-ir:bcc-b2, corpus:phase:al-ir:b2-bcc
paper: paper:10.1016/j.calphad.2008.09.014:B2-AlIr
tdb: tdb:AlIr-08Abe.tdb:B2_BCC

TDB models of B2_BCC (1): PHASE and CONSTITUENT statements as written

AlIr-08Abe.tdb: B2_BCC, type code %BO, sha256 ccf8c59d9ed25c09…

61: PHASE B2_BCC %BO 3 0.5 0.5 3 !
62: CONST B2_BCC : AL% IR VA : AL IR% VA : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02654036 Woo-Gwang Jung, O. J. Kleppa, Standard molar enthalpies of formation of MeAl (Me = Ru, Rh, Os, Ir), Metall Trans B 23, 53-56 (1992).
cited as the source of values for this phase
doi:10.1016/j.scriptamat.2005.01.020 M. Ode, H. Murakami, H. Onodera, Self-propagating high-temperature synthesis of IrAl and its application to coating process, Scripta Materialia 52, 1057-1062 (2005).
cited as the source of values for this phase

FCC_4SL (Al–Ir)

Id: phase:al-ir:fcc-4sl; status needs_review
No structure assigned. Why: order_disorder_ambiguity:AlIr-08Abe.tdb_model_is_partitioned; order_disorder_ambiguity:AlIr-08Zha.tdb_model_is_partitioned; unrecognised_name_tokens:4SL
Candidate (dft_mp): P6_3/mmc (194) — on-hull MP Al3Ir at x(IR)=0.2500
Candidate (dft_mp): P2_1/c (14) — on-hull MP Al9Ir2 at x(IR)=0.1818
Candidate (dft_mp): Pm-3m (221) — on-hull MP AlIr at x(IR)=0.5000
Candidate (dft_oqmd): Pm-3m (221) — on-hull OQMD Al1 Ir1 at x(IR)=0.5000
Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Al2 Ir1 at x(IR)=0.3333
Candidate (dft_oqmd): I41/a (88) — on-hull OQMD Al21 Ir8 at x(IR)=0.2759
Candidate (dft_oqmd): P21/c (14) — on-hull OQMD Al9 Ir2 at x(IR)=0.1818
Candidate (name_token): Cu · A1 · cF4 · Fm-3m (225) — Strukturbericht/word 'A1' in the TDB name
Stability: stable in 2 of 2 calculated diagram(s): 300–3998.99 K, x(Ir) 0–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-ir:fcc-4sl
paper: paper:10.1016/j.calphad.2008.09.014:L10-AlIr, paper:10.1016/j.calphad.2008.09.014:L12-Al3Ir, paper:10.1016/j.calphad.2008.09.014:L12-AlIr3
tdb: tdb:AlIr-08Abe.tdb:FCC_4SL, tdb:AlIr-08Zha.tdb:FCC_4SL

TDB models of FCC_4SL (2): PHASE and CONSTITUENT statements as written

AlIr-08Abe.tdb: FCC_4SL, type code %AY, sha256 ccf8c59d9ed25c09…

46: PHASE FCC_4SL:F %AY 5 0.25 0.25 0.25 0.25 1 !
47: CONST FCC_4SL:F : AL IR : AL IR : AL IR : AL IR : VA : !

AlIr-08Zha.tdb: FCC_4SL, type code %AY, sha256 c64bc19a38e73439…

46: PHASE FCC_4SL:F %AY 5 0.25 0.25 0.25 0.25 1 !
47: CONST FCC_4SL:F : AL IR : AL IR : AL IR : AL IR : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

FCC_A1 (Al–Ir)

Id: phase:al-ir:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 300–3999 K, x(Ir) 0–1
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:al-ir:fcc-a1
paper: paper:10.1016/j.actamat.2006.03.058:fcc
tdb: tdb:AlIr-06Jia.tdb:FCC_A1, tdb:AlIr-07Abe.tdb:FCC_A1, tdb:AlIr-08Abe.tdb:A1_FCC, tdb:AlIr-08Abe.tdb:FCC_A1, tdb:AlIr-08Zha.tdb:A1_FCC, tdb:AlIr-08Zha.tdb:FCC_A1

TDB models of FCC_A1 (6): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: FCC_A1, type code %A, sha256 42aa80aa2bf0ad5b…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : AL IR : VA : !

AlIr-07Abe.tdb: FCC_A1, type code %A, sha256 28d8af6daff1f08a…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : AL IR : VA : !

AlIr-08Abe.tdb: A1_FCC, type code %A, sha256 ccf8c59d9ed25c09…

41: PHASE A1_FCC %A 2 1 1 !
42: CONST A1_FCC : AL IR : VA : !

AlIr-08Abe.tdb: FCC_A1, type code %A, sha256 ccf8c59d9ed25c09…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : AL IR : VA : !

AlIr-08Zha.tdb: A1_FCC, type code %A, sha256 c64bc19a38e73439…

41: PHASE A1_FCC %A 2 1 1 !
42: CONST A1_FCC : AL IR : VA : !

AlIr-08Zha.tdb: FCC_A1, type code %A, sha256 c64bc19a38e73439…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : AL IR : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

HCP_A3 (Al–Ir)

Id: phase:al-ir:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: not stable in 4 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:al-ir:hcp-a3
tdb: tdb:AlIr-06Jia.tdb:HCP_A3, tdb:AlIr-07Abe.tdb:HCP_A3, tdb:AlIr-08Abe.tdb:HCP_A3, tdb:AlIr-08Zha.tdb:HCP_A3

TDB models of HCP_A3 (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: HCP_A3, type code %A, sha256 42aa80aa2bf0ad5b…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : AL IR : VA : !

AlIr-07Abe.tdb: HCP_A3, type code %A, sha256 28d8af6daff1f08a…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : AL IR : VA : !

AlIr-08Abe.tdb: HCP_A3, type code %A, sha256 ccf8c59d9ed25c09…

66: PHASE HCP_A3 %A 2 1 0.5 !
67: CONST HCP_A3 : AL IR : VA : !

AlIr-08Zha.tdb: HCP_A3, type code %A, sha256 c64bc19a38e73439…

56: PHASE HCP_A3 %A 2 1 0.5 !
57: CONST HCP_A3 : AL IR : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

LIQUID (Al–Ir)

Id: phase:al-ir:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 920.49–4000 K, x(Ir) 0–1
Literature: 17 values (17 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-ir:liquid
paper: paper:10.1016/j.actamat.2006.03.058:Liquid
tdb: tdb:AlIr-06Jia.tdb:LIQUID, tdb:AlIr-07Abe.tdb:LIQUID, tdb:AlIr-08Abe.tdb:LIQUID, tdb:AlIr-08Zha.tdb:LIQUID

TDB models of LIQUID (4): PHASE and CONSTITUENT statements as written

AlIr-06Jia.tdb: LIQUID, type code %, sha256 42aa80aa2bf0ad5b…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : AL IR : !

AlIr-07Abe.tdb: LIQUID, type code %, sha256 28d8af6daff1f08a…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : AL IR : !

AlIr-08Abe.tdb: LIQUID, type code %, sha256 ccf8c59d9ed25c09…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : AL IR : !

AlIr-08Zha.tdb: LIQUID, type code %, sha256 c64bc19a38e73439…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : AL IR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2006.03.058 C JIANG, B GLEESON, A combined first-principles/CALPHAD modeling of the Al–Ir system, Acta Materialia 54, 4101-4110 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2008.09.014 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).
assessment that models this phase
doi:10.1016/j.scriptamat.2008.04.012 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).
assessment that models this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  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}
}