# Al–Ti phases > Al–Ti system: 18 phases (tier A 7, tier C 5, liquid 1, needs_review 5); 18 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/AL-TI.html · Markdown: https://data.orchid-project.org/phases/pages/AL-TI.md 18 phases (tier A 7, tier C 5, liquid 1, needs_review 5); 18 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](https://orchid-project.org/phases/?q=AL-TI) · [full JSON](https://data.orchid-project.org/phases/systems/AL-TI.json) · [Al–Ti system page](https://data.orchid-project.org/systems/AL-TI.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-TI.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Ti system (18) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AL11TI5_D023](#phase-al-ti-al11ti5-d023); _phase:al-ti:al11ti5-d023_ | | needs_review | stable in 2 of 2 calculated diagram(s): 1269.09–1688.63 K, x(Ti) 0.29767–0.35085 | 9 | 2 | | [AL2TI](#phase-al-ti-al2ti); _phase:al-ti:al2ti_ | Ga2Hf · tI24 · I4_1/amd (141) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 300–1501.27 K, x(Ti) 0.32596–0.34842 | 39 | 5 | | [AL3M_D022](#phase-al-ti-al3m-d022); _phase:al-ti:al3m-d022_ | Al3Ti · D0_22 · tI8 · I4/mmm (139) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1646.24 K, x(Ti) 0.25–0.27629 | 3 | 1 | | [AL3TI_LT](#phase-al-ti-al3ti); _phase:al-ti:al3ti_ | Al3Ti-LT · tI32 · I4/mmm (139) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1230 K, x(Ti) 0.24339–0.25435 | 0 | 1 | | [AL3TI_D022](#phase-al-ti-al3ti-d022); _phase:al-ti:al3ti-d022_ | Al3Ti · D0_22 · tI8 · I4/mmm (139) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1675.57 K, x(Ti) 0.23513–0.25848 | 14 | 4 | | [AL5TI2](#phase-al-ti-al5ti2); _phase:al-ti:al5ti2_ | Al5Ti2 · tP28 · P4/mmm (123) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 1230–1705.3 K, x(Ti) 0.28571–0.36342 | 42 | 3 | | [AL5TI3](#phase-al-ti-al5ti3); _phase:al-ti:al5ti3_ | Al5Ti3 · tP32 · P4/mbm (127) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1083.25 K, x(Ti) 0.375–0.375 | 3 | 2 | | [ALM3_D019](#phase-al-ti-alm3-d019); _phase:al-ti:alm3-d019_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1462.48 K, x(Ti) 0.6028–0.78954 | 2 | 1 | | [ALTI_L10](#phase-al-ti-alti-l10); _phase:al-ti:alti-l10_ | AuCu · L1_0 · tP4 · P4/mmm (123) | tier A: standard phase name | stable in 4 of 4 calculated diagram(s): 300–1766.34 K, x(Ti) 0.33323–0.53261 | 57 | 4 | | [ALTI3_D019](#phase-al-ti-alti3-d019); _phase:al-ti:alti3-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1465.93 K, x(Ti) 0.61497–0.84713 | 36 | 3 | | [BCC_4SL](#phase-al-ti-bcc-4sl); _phase:al-ti:bcc-4sl_ | | needs_review | stable in 1 of 1 calculated diagram(s): 1170–1940 K, x(Ti) 0.52–0.96 | 0 | 1 | | [BCC_A2](#phase-al-ti-bcc-a2); _phase:al-ti:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 301.24–1988.48 K, x(Ti) 0.50866–1 | 45 | 8 | | [B2_BCC](#phase-al-ti-bcc-b2); _phase:al-ti:bcc-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300.72–1963.4 K, x(Ti) 0.55414–1 | 0 | 2 | | [FCC_4SL](#phase-al-ti-fcc-4sl); _phase:al-ti:fcc-4sl_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1744.39 K, x(Ti) 0–0.5284 | 0 | 1 | | [FCC_A1](#phase-al-ti-fcc-a1); _phase:al-ti:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–938.69 K, x(Ti) 0–0.00784 | 10 | 6 | | [HCP_4SL](#phase-al-ti-hcp-4sl); _phase:al-ti:hcp-4sl_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1775.76 K, x(Ti) 0.48866–1 | 0 | 1 | | [HCP_A3](#phase-al-ti-hcp-a3); _phase:al-ti:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–1849.38 K, x(Ti) 0.46777–1 | 67 | 6 | | [LIQUID](#phase-al-ti-liquid); _phase:al-ti:liquid_ | liquid | liquid | stable in 5 of 5 calculated diagram(s): 929.48–2500 K, x(Ti) 0–1 | 78 | 5 | ## AL11TI5_D023 (Al–Ti) - Id: `phase:al-ti:al11ti5-d023`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_D0_23; stoichiometry_contradicts_D0_23:AlTi-98Sau-LB.tdb - Candidate (dft_mp): I4_1/amd (141) — on-hull MP TiAl2 at x(TI)=0.3333 - Candidate (dft_oqmd): I41/amd (141) — on-hull OQMD Al2 Ti1 at x(TI)=0.3333 - Candidate (literature_printed): Al3Zr · tI16 — printed with a label mapped to this phase - Candidate (name_token): Al3Zr · D0_23 · tI16 · I4/mmm (139) — Strukturbericht/word 'D023' in the TDB name - Candidate (sgte_mmc2): Al3Zr · D0_23 · tI16 · I4/mmm (139) — Hallstedt 2025 mmc2 row for AL11TI5_D023: Al11Ti5 (delta) ?? (structure uncertain?) - Candidate (sgte_mmc2): Al3Zr · D0_23 · tI16 · I4/mmm (139) — Hallstedt 2025 mmc2 row for AL11TI5_D023: Al11Ti5 (zeta), see also Al5Ti2 - Candidate (tdb_comment): — AlTi-24Lia.tdb: 'Prototype Al3Zr (tI16)' - Candidate (tdb_comment): Al3Zr · tI16 · I4/mmm, also called delta — AlTi-98Sau-LB.tdb: 'Prototype Al3Zr (tI16, I4/mmm, also called delta)' - Stability: stable in 2 of 2 calculated diagram(s): 1269.09–1688.63 K, x(Ti) 0.29767–0.35085 - Literature: 9 values (8 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al11ti5-d023) Names (5): _corpus: _corpus:phase:al-ti:al11ti5-d023 _paper: _paper:10.1007/s11669-024-01124-9:D023-Ti5Al11, paper:sha256-85fd53a1a176b694:Al11Ti5 _tdb: _tdb:AlTi-24Lia.tdb:AL11TI5_D023, tdb:AlTi-98Sau-LB.tdb:AL11TI5_D023 ### TDB models of AL11TI5_D023 (2): PHASE and CONSTITUENT statements as written [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): AL11TI5_D023, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 75: PHASE AL11TI5_D023 % 3 2 1 1 ! 76: CONST AL11TI5_D023 : AL : AL% TI : TI : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): AL11TI5_D023, type code %, sha256 `20c2d77856efb995…` ~~~~text 60: PHASE AL11TI5_D023 % 2 17 8 ! 61: CONST AL11TI5_D023 : AL : TI : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ ## AL2TI (Al–Ti) - Id: `phase:al-ti:al2ti`; status `assigned` - Structure: Ga2Hf · tI24 · I4_1/amd (141); type `st:ga2hf-ti24`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 5 of 5 calculated diagram(s): 300–1501.27 K, x(Ti) 0.32596–0.34842 - Literature: 39 values (39 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al2ti) Names (11): _corpus: _corpus:phase:al-ti:al2ti _paper: _paper:10.1007/bf02646001:TiAl2, paper:10.1007/s11669-024-01124-9:Al2Ti, paper:10.1007/s11669-024-01124-9:TiAl2, paper:10.1016/j.jallcom.2007.10.061:η, paper:sha256-85fd53a1a176b694:Al2Ti _tdb: _tdb:AlTi-00Ohn.tdb:AL2TI, tdb:AlTi-08Wit.tdb:AL2TI, tdb:AlTi-24Lia.tdb:AL2TI, tdb:AlTi-92Kat.tdb:AL2TI, tdb:AlTi-98Sau-LB.tdb:AL2TI ### TDB models of AL2TI (5): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): AL2TI, type code %, sha256 `f6830a89b441de8e…` ~~~~text 96: PHASE AL2TI % 2 2 1 ! 97: CONST AL2TI : AL : TI : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): AL2TI, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 76: PHASE AL2TI % 2 2 1 ! 77: CONST AL2TI : AL% TI : AL TI% : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): AL2TI, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 80: PHASE AL2TI % 2 2 1 ! 81: CONST AL2TI : AL% TI : AL TI% : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): AL2TI, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 58: PHASE AL2TI % 2 2 1 ! 59: CONST AL2TI : AL : TI : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): AL2TI, type code %, sha256 `20c2d77856efb995…` ~~~~text 65: PHASE AL2TI % 2 2 1 ! 66: CONST AL2TI : AL : TI : ! ~~~~ Example references (10 of 10; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1361/105497103772084552](https://doi.org/10.1361/105497103772084552) A. Grytsiv, P. Rogl, H. Schmidt, G. Giester, Constitution of the ternary system Al-Ru-Ti (Aluminum-Ruthenium-Titanium), JPE 24, 511-527 (2003). _cited as the source of values for this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1007/s11669-005-0137-x](https://doi.org/10.1007/s11669-005-0137-x) V. Raghavan, Al-Ti (Aluminum-Titanium), J Phs Eqil and Diff 26, 171-172 (2005). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.12.028](https://doi.org/10.1016/j.intermet.2004.12.028) R. Kainuma, J. Sato, I. Ohnuma, K. Ishida, Phase stability and interdiffusivity of the L10-based ordered phases in Al-rich portion of the Ti–Al binary system, Intermetallics 13, 784-791 (2005). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(02)00022-5](https://doi.org/10.1016/s0966-9795%2802%2900022-5) M Palm, L.C Zhang, F Stein, G Sauthoff, Phases and phase equilibria in the Al-rich part of the Al–Ti system above 900 °C, Intermetallics 10, 523-540 (2002). _cited as the source of values for this phase_ ## AL3M_D022 (Al–Ti) - Id: `phase:al-ti:al3m-d022`; status `assigned` - Structure: Al3Ti · D0_22 · tI8 · I4/mmm (139); type `st:d0-22-al3ti-ti8`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:AL3M); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 1 of 1 calculated diagram(s): 300–1646.24 K, x(Ti) 0.25–0.27629 - Literature: 3 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al3m-d022) Names (5): _corpus: _corpus:phase:al-ti:al3m-d022 _paper: _paper:sha256-85fd53a1a176b694:AlM\*, paper:sha256-85fd53a1a176b694:AlM-D0\*22, paper:sha256-85fd53a1a176b694:AlM-D022 _tdb: _tdb:AlTi-98Sau-LB.tdb:AL3M_D022 ### TDB models of AL3M_D022 (1): PHASE and CONSTITUENT statements as written [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): AL3M_D022, type code %, sha256 `20c2d77856efb995…` ~~~~text 50: PHASE AL3M_D022 % 2 3 1 ! 51: CONST AL3M_D022 : AL TI : TI : ! ~~~~ ## AL3TI_LT (Al–Ti) - Id: `phase:al-ti:al3ti`; status `assigned` - Structure: Al3Ti-LT · tI32 · I4/mmm (139); type `st:al3ti-lt-ti32`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 1 of 1 calculated diagram(s): 300–1230 K, x(Ti) 0.24339–0.25435 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al3ti) Names (2): _corpus: _corpus:phase:al-ti:al3ti _tdb: _tdb:AlTi-08Wit.tdb:AL3TI_LT ### TDB models of AL3TI_LT (1): PHASE and CONSTITUENT statements as written [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): AL3TI_LT, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 66: PHASE AL3TI_LT % 2 3 1 ! 67: CONST AL3TI_LT : AL% TI : AL TI% : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase_ ## AL3TI_D022 (Al–Ti) - Id: `phase:al-ti:al3ti-d022`; status `assigned` - Structure: Al3Ti · D0_22 · tI8 · I4/mmm (139); type `st:d0-22-al3ti-ti8`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlTi-08Wit.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-24Lia.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-92Kat.tdb also describes the disordered state - Stability: stable in 4 of 4 calculated diagram(s): 300–1675.57 K, x(Ti) 0.23513–0.25848 - Literature: 14 values (14 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al3ti-d022) Names (7): _corpus: _corpus:phase:al-ti:al3ti-d022 _paper: _paper:10.1007/bf02646001:TiAl3, paper:10.1007/s11669-024-01124-9:D022-TiAl3 _tdb: _tdb:AlTi-00Ohn.tdb:AL3TI_D022, tdb:AlTi-08Wit.tdb:AL3TI_D022, tdb:AlTi-24Lia.tdb:AL3TI_D022, tdb:AlTi-92Kat.tdb:AL3TI_D022 ### TDB models of AL3TI_D022 (4): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): AL3TI_D022, type code %, sha256 `f6830a89b441de8e…` ~~~~text 86: PHASE AL3TI_D022 % 2 3 1 ! 87: CONST AL3TI_D022 : AL : TI : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): AL3TI_D022, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 61: PHASE AL3TI_D022 % 2 3 1 ! 62: CONST AL3TI_D022 : AL% TI : AL TI% : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): AL3TI_D022, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 70: PHASE AL3TI_D022 % 2 3 1 ! 71: CONST AL3TI_D022 : AL% TI : AL TI% : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): AL3TI_D022, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 48: PHASE AL3TI_D022 % 2 3 1 ! 49: CONST AL3TI_D022 : AL% TI : AL TI% : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1007/bf02644659](https://doi.org/10.1007/bf02644659) J. Cissé, H. W. Kerr, G. F. Bolling, The nucleation and solidification of Al-Ti alloys, Metall Trans 5, 633-641 (1974). _cited as the source of values for this phase_ ## AL5TI2 (Al–Ti) - Id: `phase:al-ti:al5ti2`; status `assigned` - Structure: Al5Ti2 · tP28 · P4/mmm (123); type `st:al5ti2-tp28`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 3 of 3 calculated diagram(s): 1230–1705.3 K, x(Ti) 0.28571–0.36342 - Literature: 42 values (42 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al5ti2) Names (8): _corpus: _corpus:phase:al-ti:al5ti2 _paper: _paper:10.1007/bf02646001:Ti2Al5, paper:10.1016/j.jallcom.2007.10.061:Ti2Al5, paper:10.1016/j.jallcom.2007.10.061:Ti5Al11, paper:10.1016/j.jallcom.2007.10.061:ζ _tdb: _tdb:AlTi-00Ohn.tdb:AL5TI2, tdb:AlTi-08Wit.tdb:AL5TI2, tdb:AlTi-92Kat.tdb:AL5TI2 ### TDB models of AL5TI2 (3): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): AL5TI2, type code %, sha256 `f6830a89b441de8e…` ~~~~text 91: PHASE AL5TI2 % 2 5 2 ! 92: CONST AL5TI2 : AL : TI : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): AL5TI2, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 71: PHASE AL5TI2 % 2 5 2 ! 72: CONST AL5TI2 : AL% TI : AL TI% : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): AL5TI2, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 53: PHASE AL5TI2 % 2 5 2 ! 54: CONST AL5TI2 : AL : TI : ! ~~~~ Example references (10 of 10; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1007/s11661-001-0114-x](https://doi.org/10.1007/s11661-001-0114-x) J. Braun, M. Ellner, Phase equilibria investigations on the aluminum-rich part of the binary system Ti-Al, Metall Mater Trans A 32, 1037-1047 (2001). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.1361/105497103772084552](https://doi.org/10.1361/105497103772084552) A. Grytsiv, P. Rogl, H. Schmidt, G. Giester, Constitution of the ternary system Al-Ru-Ti (Aluminum-Ruthenium-Titanium), JPE 24, 511-527 (2003). _cited as the source of values for this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1007/s11669-004-0110-0](https://doi.org/10.1007/s11669-004-0110-0) Marina Bulanova, Ludmila Tretyachenko, Marina Golovkova, Konstantin Meleshevich, Phase equilibria in the α-Ti-Al-Si region of the Ti-Si-Al system, J Phs Eqil and Diff 25, 209-229 (2004). _cited as the source of values for this phase_ - [doi:10.1007/s11669-005-0137-x](https://doi.org/10.1007/s11669-005-0137-x) V. Raghavan, Al-Ti (Aluminum-Titanium), J Phs Eqil and Diff 26, 171-172 (2005). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(02)00022-5](https://doi.org/10.1016/s0966-9795%2802%2900022-5) M Palm, L.C Zhang, F Stein, G Sauthoff, Phases and phase equilibria in the Al-rich part of the Al–Ti system above 900 °C, Intermetallics 10, 523-540 (2002). _cited as the source of values for this phase_ ## AL5TI3 (Al–Ti) - Id: `phase:al-ti:al5ti3`; status `assigned` - Structure: Al5Ti3 · tP32 · P4/mbm (127); type `st:al5ti3-tp32`; 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](https://doi.org/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 0.6250, Ti 0.3750 - Stability: stable in 2 of 2 calculated diagram(s): 300–1083.25 K, x(Ti) 0.375–0.375 - Literature: 3 values (3 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:al5ti3) Names (5): _corpus: _corpus:phase:al-ti:al5ti3 _paper: _paper:10.1007/s11669-024-01124-9:Al5Ti3, paper:10.1016/j.jallcom.2007.10.061:Ti3Al5 _tdb: _tdb:AlTi-08Wit.tdb:AL5TI3, tdb:AlTi-24Lia.tdb:AL5TI3 ### TDB models of AL5TI3 (2): PHASE and CONSTITUENT statements as written [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): AL5TI3, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 81: PHASE AL5TI3 % 2 5 3 ! 82: CONST AL5TI3 : AL : TI : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): AL5TI3, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 85: PHASE AL5TI3 % 2 5 3 ! 86: CONST AL5TI3 : AL : TI : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1361/105497103772084552](https://doi.org/10.1361/105497103772084552) A. Grytsiv, P. Rogl, H. Schmidt, G. Giester, Constitution of the ternary system Al-Ru-Ti (Aluminum-Ruthenium-Titanium), JPE 24, 511-527 (2003). _cited as the source of values for this phase_ ## ALM3_D019 (Al–Ti) - Id: `phase:al-ti:alm3-d019`; status `needs_review` - No structure assigned. Why: unrecognised_name_tokens:ALM3 - Candidate (dft_mp): P6_3/mmc (194) — on-hull MP Ti3Al at x(TI)=0.7500 - Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Al1 Ti3 at x(TI)=0.7500 - Candidate (name_token): Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) — Strukturbericht/word 'D019' in the TDB name - Candidate (tdb_comment): CdMg3 · hP8 · P6_3/mmc — AlTi-98Sau-LB.tdb: 'Prototype CdMg3 (hP8, P6_3/mmc)' - Stability: stable in 1 of 1 calculated diagram(s): 300–1462.48 K, x(Ti) 0.6028–0.78954 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:alm3-d019) Names (3): _corpus: _corpus:phase:al-ti:alm3-d019 _paper: _paper:sha256-85fd53a1a176b694:AlM-D019 _tdb: _tdb:AlTi-98Sau-LB.tdb:ALM3_D019 ### TDB models of ALM3_D019 (1): PHASE and CONSTITUENT statements as written [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): ALM3_D019, type code %, sha256 `20c2d77856efb995…` ~~~~text 55: PHASE ALM3_D019 % 2 1 3 ! 56: CONST ALM3_D019 : AL% TI : AL TI% : ! ~~~~ ## ALTI_L10 (Al–Ti) - Id: `phase:al-ti:alti-l10`; status `assigned` - Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type `st:l1-0-aucu-tp4`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlTi-08Wit.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-24Lia.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-92Kat.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-98Sau-LB.tdb also describes the disordered state - Stability: stable in 4 of 4 calculated diagram(s): 300–1766.34 K, x(Ti) 0.33323–0.53261 - Literature: 57 values (57 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:alti-l10) Names (10): _corpus: _corpus:phase:al-ti:alti-l10 _paper: _paper:10.1007/bf02646001:TiAl, paper:10.1007/s11669-024-01124-9:L10-TiAl, paper:10.1016/j.jallcom.2007.10.061:γ, paper:sha256-85fd53a1a176b694:AlTi-L10, paper:sha256-85fd53a1a176b694:L10-AlTi _tdb: _tdb:AlTi-08Wit.tdb:ALTI_L10, tdb:AlTi-24Lia.tdb:ALTI_L10, tdb:AlTi-92Kat.tdb:ALTI_L10, tdb:AlTi-98Sau-LB.tdb:ALTI_L10 ### TDB models of ALTI_L10 (4): PHASE and CONSTITUENT statements as written [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): ALTI_L10, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 86: PHASE ALTI_L10 % 2 1 1 ! 87: CONST ALTI_L10 : AL% TI : AL TI% : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): ALTI_L10, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 90: PHASE ALTI_L10 % 2 1 1 ! 91: CONST ALTI_L10 : AL% TI : AL TI% : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): ALTI_L10, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 63: PHASE ALTI_L10 % 2 1 1 ! 64: CONST ALTI_L10 : AL% TI : AL TI% : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): ALTI_L10, type code %, sha256 `20c2d77856efb995…` ~~~~text 70: PHASE ALTI_L10 % 2 1 1 ! 71: CONST ALTI_L10 : AL% TI : AL TI% : ! ~~~~ Example references (10 of 12; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.1361/105497103772084552](https://doi.org/10.1361/105497103772084552) A. Grytsiv, P. Rogl, H. Schmidt, G. Giester, Constitution of the ternary system Al-Ru-Ti (Aluminum-Ruthenium-Titanium), JPE 24, 511-527 (2003). _cited as the source of values for this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1007/bf02669603](https://doi.org/10.1007/bf02669603) C. D. Anderson, W. H. Hofmeister, R. J. Bayuzick, Liquidus temperatures in the Ti-Al system, Metall Trans A 24, 61-66 (1993). _cited as the source of values for this phase_ - [doi:10.1007/s11661-001-0114-x](https://doi.org/10.1007/s11661-001-0114-x) J. Braun, M. Ellner, Phase equilibria investigations on the aluminum-rich part of the binary system Ti-Al, Metall Mater Trans A 32, 1037-1047 (2001). _cited as the source of values for this phase_ - [doi:10.1016/0956-7151(90)90208-x](https://doi.org/10.1016/0956-7151%2890%2990208-x) E.L. Hall, Shyh-Chin Huang, Microstructures of rapidly-solidified binary TiAl alloys, Acta Metallurgica et Materialia 38, 539-549 (1990). _cited as the source of values for this phase_ - [doi:10.1016/0956-716x(92)90103-l](https://doi.org/10.1016/0956-716x%2892%2990103-l) A. Hellwig, G. Inden, M. Palm, The invariant reaction between α, α2 and γ in the Ti/1bAl system, Scripta Metallurgica et Materialia 27, 143-148 (1992). _cited as the source of values for this phase_ ## ALTI3_D019 (Al–Ti) - Id: `phase:al-ti:alti3-d019`; status `assigned` - Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type `st:d0-19-ni3sn-hp8`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlTi-08Wit.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-24Lia.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-92Kat.tdb also describes the disordered state - Stability: stable in 3 of 3 calculated diagram(s): 300–1465.93 K, x(Ti) 0.61497–0.84713 - Literature: 36 values (36 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:alti3-d019) Names (7): _corpus: _corpus:phase:al-ti:alti3-d019 _paper: _paper:10.1007/bf02646001:Ti3Al, paper:10.1007/s11669-024-01124-9:D019-Ti3Al, paper:10.1016/j.jallcom.2007.10.061:α2 _tdb: _tdb:AlTi-08Wit.tdb:ALTI3_D019, tdb:AlTi-24Lia.tdb:ALTI3_D019, tdb:AlTi-92Kat.tdb:ALTI3_D019 ### TDB models of ALTI3_D019 (3): PHASE and CONSTITUENT statements as written [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): ALTI3_D019, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 91: PHASE ALTI3_D019 % 2 1 3 ! 92: CONST ALTI3_D019 : AL% TI : AL TI% : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): ALTI3_D019, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 95: PHASE ALTI3_D019 % 2 1 3 ! 96: CONST ALTI3_D019 : AL% TI : AL TI% : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): ALTI3_D019, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 68: PHASE ALTI3_D019 % 2 1 3 ! 69: CONST ALTI3_D019 : AL% TI : AL TI% : ! ~~~~ Example references (10 of 11; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.6028/nist.ir.88-3856](https://doi.org/10.6028/nist.ir.88-3856) R M Waterstrat, Effect of interstitial elements on phase relationships in the titanium-aluminum system, (1988). _cited as the source of values for this phase_ - [doi:10.1016/0956-716x(92)90103-l](https://doi.org/10.1016/0956-716x%2892%2990103-l) A. Hellwig, G. Inden, M. Palm, The invariant reaction between α, α2 and γ in the Ti/1bAl system, Scripta Metallurgica et Materialia 27, 143-148 (1992). _cited as the source of values for this phase_ - [doi:10.1016/0966-9795(94)90018-3](https://doi.org/10.1016/0966-9795%2894%2990018-3) R. Kainuma, M. Palm, G. Inden, Solid-phase equilibria in the Ti-rich part of the TiAl system, Intermetallics 2, 321-332 (1994). _cited as the source of values for this phase_ - [doi:10.1016/s0036-9748(88)80138-8](https://doi.org/10.1016/s0036-9748%2888%2980138-8) S.A. Jones, R.D. Shull, A.J. McAlister, M.J. Kaufman, Microstructural studies of Ti-Al alloys in the vicinity of the “eutectoid” reaction (α→α2+γ), Scripta Metallurgica 22, 1235-1240 (1988). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(02)00113-9](https://doi.org/10.1016/s0966-9795%2802%2900113-9) A Suzuki, M Takeyama, T Matsuo, Transmission electron microscopy on the phase equilibria among β, α and α2 phases in Ti–Al binary system, Intermetallics 10, 915-924 (2002). _cited as the source of values for this phase_ ## BCC_4SL (Al–Ti) - Id: `phase:al-ti:bcc-4sl`; status `needs_review` - No structure assigned. Why: order_disorder_ambiguity:AlTi-24Lia.tdb_model_is_partitioned; unrecognised_name_tokens:4SL - Candidate (dft_mp): P6_3/mmc (194) — on-hull MP Ti3Al at x(TI)=0.7500 - Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Al1 Ti3 at x(TI)=0.7500 - Candidate (name_token): W · A2 · cI2 · Im-3m (229) — Strukturbericht/word 'A2' in the TDB name - Candidate (tdb_comment): CsCl · B2 · cP2, Pm-3m — AlTi-24Lia.tdb: 'Prototype CsCl (B2, cP2, Pm-3m), NaTl (B32, cF16, Fd-3m),' - Stability: stable in 1 of 1 calculated diagram(s): 1170–1940 K, x(Ti) 0.52–0.96 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:bcc-4sl) Names (2): _corpus: _corpus:phase:al-ti:bcc-4sl _tdb: _tdb:AlTi-24Lia.tdb:BCC_4SL ### TDB models of BCC_4SL (1): PHASE and CONSTITUENT statements as written [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): BCC_4SL, type code %O, sha256 `57bd0014ed6335b5…` ~~~~text 60: PHASE BCC_4SL:B %O 5 0.25 0.25 0.25 0.25 3 ! 61: CONST BCC_4SL:B : AL TI VA : AL TI VA : AL TI VA : AL TI VA : VA% : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase_ ## BCC_A2 (Al–Ti) - Id: `phase:al-ti:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 301.24–1988.48 K, x(Ti) 0.50866–1 - Literature: 45 values (45 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:bcc-a2) Names (15): _corpus: _corpus:phase:al-ti:bcc-a2 _paper: _paper:10.1007/bf02646001:(βTi), paper:10.1007/s11669-024-01124-9:BCC, paper:10.1007/s11669-024-01124-9:BCC_B2, paper:10.1007/s11669-024-01124-9:β-Ti, paper:10.1016/j.jallcom.2007.10.061:β, paper:sha256-85fd53a1a176b694:bcc-A2 _tdb: _tdb:AlTi-00Ohn.tdb:A2_BCC, tdb:AlTi-00Ohn.tdb:BCC_A2, tdb:AlTi-08Wit.tdb:A2_BCC, tdb:AlTi-08Wit.tdb:BCC_A2, tdb:AlTi-24Lia.tdb:A2_BCC, tdb:AlTi-24Lia.tdb:BCC_A2, tdb:AlTi-92Kat.tdb:BCC_A2, tdb:AlTi-98Sau-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (8): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): A2_BCC, type code %B, sha256 `f6830a89b441de8e…` ~~~~text 61: PHASE A2_BCC %B 2 1 3 ! 62: CONST A2_BCC : AL TI% : VA : ! ~~~~ [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): BCC_A2, type code %B, sha256 `f6830a89b441de8e…` ~~~~text 56: PHASE BCC_A2 %B 2 1 3 ! 57: CONST BCC_A2 : AL TI% : VA : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): A2_BCC, type code %B, sha256 `9b70a4ac247c561e…` ~~~~text 46: PHASE A2_BCC %B 2 1 3 ! 47: CONST A2_BCC : AL TI% : VA : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): BCC_A2, type code %B, sha256 `9b70a4ac247c561e…` ~~~~text 41: PHASE BCC_A2 %B 2 1 3 ! 42: CONST BCC_A2 : AL TI% : VA : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): A2_BCC, type code %B, sha256 `57bd0014ed6335b5…` ~~~~text 54: PHASE A2_BCC %B 2 1 3 ! 55: CONST A2_BCC : AL TI% VA : VA : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): BCC_A2, type code %B, sha256 `57bd0014ed6335b5…` ~~~~text 49: PHASE BCC_A2 %B 2 1 3 ! 50: CONST BCC_A2 : AL TI% VA : VA : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): BCC_A2, type code %B, sha256 `e8aff28ebffc8f27…` ~~~~text 38: PHASE BCC_A2 %B 2 1 3 ! 39: CONST BCC_A2 : AL TI% : VA : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): BCC_A2, type code %B, sha256 `20c2d77856efb995…` ~~~~text 40: PHASE BCC_A2 %B 2 1 3 ! 41: CONST BCC_A2 : AL TI% : VA : ! ~~~~ Example references (10 of 13; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1016/j.commatsci.2012.02.002](https://doi.org/10.1016/j.commatsci.2012.02.002) Stefano Curtarolo, Wahyu Setyawan, Shidong Wang, Junkai Xue, Kesong Yang, Richard H. Taylor et al., AFLOWLIB.ORG: A distributed materials properties repository from high-throughput ab initio calculations, Computational Materials Science 58, 227-235 (2012). _cited as the source of values for this phase_ - [doi:10.1016/j.commatsci.2014.05.014](https://doi.org/10.1016/j.commatsci.2014.05.014) Richard H. Taylor, Frisco Rose, Cormac Toher, Ohad Levy, Kesong Yang, Marco Buongiorno Nardelli et al., A RESTful API for exchanging materials data in the AFLOWLIB.org consortium, Computational Materials Science 93, 178-192 (2014). _cited as the source of values for this phase_ - [doi:10.6028/nist.ir.88-3856](https://doi.org/10.6028/nist.ir.88-3856) R M Waterstrat, Effect of interstitial elements on phase relationships in the titanium-aluminum system, (1988). _cited as the source of values for this phase_ - [doi:10.1007/s11669-004-0110-0](https://doi.org/10.1007/s11669-004-0110-0) Marina Bulanova, Ludmila Tretyachenko, Marina Golovkova, Konstantin Meleshevich, Phase equilibria in the α-Ti-Al-Si region of the Ti-Si-Al system, J Phs Eqil and Diff 25, 209-229 (2004). _cited as the source of values for this phase_ - [doi:10.1016/0956-7151(90)90208-x](https://doi.org/10.1016/0956-7151%2890%2990208-x) E.L. Hall, Shyh-Chin Huang, Microstructures of rapidly-solidified binary TiAl alloys, Acta Metallurgica et Materialia 38, 539-549 (1990). _cited as the source of values for this phase_ ## B2_BCC (Al–Ti) - Id: `phase:al-ti:bcc-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Caveat: AlTi-00Ohn.tdb: ordered phase with disordered part A2_BCC (order/disorder model) - Caveat: AlTi-08Wit.tdb: ordered phase with disordered part A2_BCC (order/disorder model) - Caveat: partitioned order/disorder model in AlTi-00Ohn.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlTi-08Wit.tdb also describes the disordered state - Stability: stable in 2 of 2 calculated diagram(s): 300.72–1963.4 K, x(Ti) 0.55414–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:bcc-b2) Names (3): _corpus: _corpus:phase:al-ti:bcc-b2 _tdb: _tdb:AlTi-00Ohn.tdb:B2_BCC, tdb:AlTi-08Wit.tdb:B2_BCC ### TDB models of B2_BCC (2): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): B2_BCC, type code %BO, sha256 `f6830a89b441de8e…` ~~~~text 66: PHASE B2_BCC %BO 3 0.5 0.5 3 ! 67: CONST B2_BCC : AL% TI : AL TI% : VA : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): B2_BCC, type code %BO, sha256 `9b70a4ac247c561e…` ~~~~text 51: PHASE B2_BCC %BO 3 0.5 0.5 3 ! 52: CONST B2_BCC : AL% TI : AL TI% : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ ## FCC_4SL (Al–Ti) - Id: `phase:al-ti:fcc-4sl`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:order_disorder_ambiguity; order_disorder_ambiguity:AlTi-00Ohn.tdb_model_is_partitioned; sgte_mmc2_row_disagrees_with_name:FCC_4SL; unrecognised_name_tokens:4SL - Candidate (dft_mp): P4/mmm (123) — on-hull MP TiAl at x(TI)=0.5000 - Candidate (dft_mp): I4_1/amd (141) — on-hull MP TiAl2 at x(TI)=0.3333 - Candidate (dft_mp): I4/mmm (139) — on-hull MP TiAl3 at x(TI)=0.2500 - Candidate (dft_oqmd): P4/mmm (123) — on-hull OQMD Al1 Ti1 at x(TI)=0.5000 - Candidate (dft_oqmd): I41/amd (141) — on-hull OQMD Al2 Ti1 at x(TI)=0.3333 - Candidate (dft_oqmd): I4/mmm (139) — on-hull OQMD Al3 Ti1 at x(TI)=0.2500 - Candidate (name_token): Cu · A1 · cF4 · Fm-3m (225) — Strukturbericht/word 'A1' in the TDB name - Candidate (sgte_mmc2): AuCu · L1_0 · tP4 · P4/mmm (123) — Hallstedt 2025 mmc2 row for FCC_4SL: AlTi, AuCu, CoPt, CrPt, FeNi, FePt, MnNi - Stability: stable in 1 of 1 calculated diagram(s): 300–1744.39 K, x(Ti) 0–0.5284 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:fcc-4sl) Names (2): _corpus: _corpus:phase:al-ti:fcc-4sl _tdb: _tdb:AlTi-00Ohn.tdb:FCC_4SL ### TDB models of FCC_4SL (1): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): FCC_4SL, type code %AY, sha256 `f6830a89b441de8e…` ~~~~text 51: PHASE FCC_4SL:F %AY 5 0.25 0.25 0.25 0.25 1 ! 52: CONST FCC_4SL:F : AL% TI : AL% TI : AL TI% : AL TI% : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ ## FCC_A1 (Al–Ti) - Id: `phase:al-ti: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 5 of 5 calculated diagram(s): 300–938.69 K, x(Ti) 0–0.00784 - Literature: 10 values (10 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:fcc-a1) Names (11): _corpus: _corpus:phase:al-ti:fcc-a1 _paper: _paper:10.1007/bf02646001:(Al), paper:10.1007/s11669-024-01124-9:FCC-Al, paper:10.1016/j.jallcom.2007.10.061:(αAl), paper:sha256-85fd53a1a176b694:fcc-A1 _tdb: _tdb:AlTi-00Ohn.tdb:A1_FCC, tdb:AlTi-00Ohn.tdb:FCC_A1, tdb:AlTi-08Wit.tdb:FCC_A1, tdb:AlTi-24Lia.tdb:FCC_A1, tdb:AlTi-92Kat.tdb:FCC_A1, tdb:AlTi-98Sau-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (6): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): A1_FCC, type code %A, sha256 `f6830a89b441de8e…` ~~~~text 46: PHASE A1_FCC %A 2 1 1 ! 47: CONST A1_FCC : AL% TI : VA : ! ~~~~ [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): FCC_A1, type code %A, sha256 `f6830a89b441de8e…` ~~~~text 41: PHASE FCC_A1 %A 2 1 1 ! 42: CONST FCC_A1 : AL% TI : VA : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): FCC_A1, type code %A, sha256 `9b70a4ac247c561e…` ~~~~text 36: PHASE FCC_A1 %A 2 1 1 ! 37: CONST FCC_A1 : AL% TI : VA : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): FCC_A1, type code %A, sha256 `57bd0014ed6335b5…` ~~~~text 44: PHASE FCC_A1 %A 2 1 1 ! 45: CONST FCC_A1 : AL% TI : VA : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): FCC_A1, type code %A, sha256 `e8aff28ebffc8f27…` ~~~~text 33: PHASE FCC_A1 %A 2 1 1 ! 34: CONST FCC_A1 : AL% TI : VA : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): FCC_A1, type code %A, sha256 `20c2d77856efb995…` ~~~~text 35: PHASE FCC_A1 %A 2 1 1 ! 36: CONST FCC_A1 : AL% TI : VA : ! ~~~~ Example references (9 of 9; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1007/bf02644659](https://doi.org/10.1007/bf02644659) J. Cissé, H. W. Kerr, G. F. Bolling, The nucleation and solidification of Al-Ti alloys, Metall Trans 5, 633-641 (1974). _cited as the source of values for this phase_ - [doi:10.1016/0001-6160(74)90077-7](https://doi.org/10.1016/0001-6160%2874%2990077-7) H W. Kerr, J Cisse, G.F Bolling, On equilibrium and non-equilibrium peritectic transformations, Acta Metallurgica 22, 677-686 (1974). _cited as the source of values for this phase_ - [doi:10.1016/0022-0248(78)90009-x](https://doi.org/10.1016/0022-0248%2878%2990009-x) Kimihiro Shibata, Tamotsu Sato, Goro Ohira, The solute distributions in dilute Al-Ti alloys during unidirectional solidification, Journal of Crystal Growth 44, 435-445 (1978). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-1984-750610](https://doi.org/10.1515/ijmr-1984-750610) A. Abdel-Hamid, C.H. Allibert, F. Durand, Z. Metallkd. 75 (1984) 455–458. _cited as the source of values for this phase_ - [doi:10.2464/jilm.34.377](https://doi.org/10.2464/jilm.34.377) Shigenori HORI, Hideo TAI, Eiichi MATUMOTO, Journal of Japan Institute of Light Metals 34, 377-381 (1984). _cited as the source of values for this phase_ ## HCP_4SL (Al–Ti) - Id: `phase:al-ti:hcp-4sl`; status `needs_review` - No structure assigned. Why: order_disorder_ambiguity:AlTi-00Ohn.tdb_model_is_partitioned; unrecognised_name_tokens:4SL - Candidate (dft_mp): P6_3/mmc (194) — on-hull MP Ti3Al at x(TI)=0.7500 - Candidate (dft_mp): P4/mmm (123) — on-hull MP TiAl at x(TI)=0.5000 - Candidate (dft_oqmd): P4/mmm (123) — on-hull OQMD Al1 Ti1 at x(TI)=0.5000 - Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Al1 Ti3 at x(TI)=0.7500 - Candidate (name_token): Mg · A3 · hP2 · P6_3/mmc (194) — Strukturbericht/word 'A3' in the TDB name - Candidate (tdb_comment): AuCd · B19 · oP4, Pmma — AlTi-00Ohn.tdb: 'Prototype AuCd (B19, oP4, Pmma) and CdMg3 (D0_19, hP8, P6_3/mmc)' - Stability: stable in 1 of 1 calculated diagram(s): 300–1775.76 K, x(Ti) 0.48866–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:hcp-4sl) Names (2): _corpus: _corpus:phase:al-ti:hcp-4sl _tdb: _tdb:AlTi-00Ohn.tdb:HCP_4SL ### TDB models of HCP_4SL (1): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): HCP_4SL, type code %AZ, sha256 `f6830a89b441de8e…` ~~~~text 81: PHASE HCP_4SL %AZ 5 0.25 0.25 0.25 0.25 0.5 ! 82: CONST HCP_4SL : AL% TI : AL TI% : AL TI% : AL TI% : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ ## HCP_A3 (Al–Ti) - Id: `phase:al-ti: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: stable in 5 of 5 calculated diagram(s): 300–1849.38 K, x(Ti) 0.46777–1 - Literature: 67 values (67 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:hcp-a3) Names (11): _corpus: _corpus:phase:al-ti:hcp-a3 _paper: _paper:10.1007/bf02646001:(αTi), paper:10.1007/s11669-024-01124-9:α-Ti, paper:10.1016/j.jallcom.2007.10.061:α, paper:sha256-85fd53a1a176b694:hcp-A3 _tdb: _tdb:AlTi-00Ohn.tdb:A3_HCP, tdb:AlTi-00Ohn.tdb:HCP_A3, tdb:AlTi-08Wit.tdb:HCP_A3, tdb:AlTi-24Lia.tdb:HCP_A3, tdb:AlTi-92Kat.tdb:HCP_A3, tdb:AlTi-98Sau-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (6): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): A3_HCP, type code %A, sha256 `f6830a89b441de8e…` ~~~~text 76: PHASE A3_HCP %A 2 1 0.5 ! 77: CONST A3_HCP : AL TI% : VA : ! ~~~~ [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): HCP_A3, type code %A, sha256 `f6830a89b441de8e…` ~~~~text 71: PHASE HCP_A3 %A 2 1 0.5 ! 72: CONST HCP_A3 : AL TI% : VA : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): HCP_A3, type code %A, sha256 `9b70a4ac247c561e…` ~~~~text 56: PHASE HCP_A3 %A 2 1 0.5 ! 57: CONST HCP_A3 : AL TI% : VA : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): HCP_A3, type code %A, sha256 `57bd0014ed6335b5…` ~~~~text 65: PHASE HCP_A3 %A 2 1 0.5 ! 66: CONST HCP_A3 : AL TI% : VA : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): HCP_A3, type code %A, sha256 `e8aff28ebffc8f27…` ~~~~text 43: PHASE HCP_A3 %A 2 1 0.5 ! 44: CONST HCP_A3 : AL TI% : VA : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): HCP_A3, type code %A, sha256 `20c2d77856efb995…` ~~~~text 45: PHASE HCP_A3 %A 2 1 0.5 ! 46: CONST HCP_A3 : AL TI% : VA : ! ~~~~ Example references (10 of 15; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.1016/0956-7151(90)90208-x](https://doi.org/10.1016/0956-7151%2890%2990208-x) E.L. Hall, Shyh-Chin Huang, Microstructures of rapidly-solidified binary TiAl alloys, Acta Metallurgica et Materialia 38, 539-549 (1990). _cited as the source of values for this phase_ - [doi:10.6028/nist.ir.88-3856](https://doi.org/10.6028/nist.ir.88-3856) R M Waterstrat, Effect of interstitial elements on phase relationships in the titanium-aluminum system, (1988). _cited as the source of values for this phase_ - [doi:10.1007/bf02669603](https://doi.org/10.1007/bf02669603) C. D. Anderson, W. H. Hofmeister, R. J. Bayuzick, Liquidus temperatures in the Ti-Al system, Metall Trans A 24, 61-66 (1993). _cited as the source of values for this phase_ - [doi:10.1007/s11669-004-0110-0](https://doi.org/10.1007/s11669-004-0110-0) Marina Bulanova, Ludmila Tretyachenko, Marina Golovkova, Konstantin Meleshevich, Phase equilibria in the α-Ti-Al-Si region of the Ti-Si-Al system, J Phs Eqil and Diff 25, 209-229 (2004). _cited as the source of values for this phase_ ## LIQUID (Al–Ti) - Id: `phase:al-ti:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 929.48–2500 K, x(Ti) 0–1 - Literature: 78 values (77 accepted) from 4 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-ti:liquid) Names (11): _corpus: _corpus:phase:al-ti:liquid _paper: _paper:10.1007/bf02646001:L, paper:10.1007/s11669-024-01124-9:L, paper:10.1016/j.jallcom.2007.10.061:L, paper:sha256-85fd53a1a176b694:L, paper:sha256-85fd53a1a176b694:Liquid _tdb: _tdb:AlTi-00Ohn.tdb:LIQUID, tdb:AlTi-08Wit.tdb:LIQUID, tdb:AlTi-24Lia.tdb:LIQUID, tdb:AlTi-92Kat.tdb:LIQUID, tdb:AlTi-98Sau-LB.tdb:LIQUID ### TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written [AlTi-00Ohn.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-00Ohn.tdb): LIQUID, type code %, sha256 `f6830a89b441de8e…` ~~~~text 36: PHASE LIQUID:L % 1 1 ! 37: CONST LIQUID:L : AL TI : ! ~~~~ [AlTi-08Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-08Wit.tdb): LIQUID, type code %, sha256 `9b70a4ac247c561e…` ~~~~text 31: PHASE LIQUID:L % 1 1 ! 32: CONST LIQUID:L : AL TI : ! ~~~~ [AlTi-24Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-24Lia.tdb): LIQUID, type code %, sha256 `57bd0014ed6335b5…` ~~~~text 39: PHASE LIQUID:L % 1 1 ! 40: CONST LIQUID:L : AL TI : ! ~~~~ [AlTi-92Kat.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-92Kat.tdb): LIQUID, type code %, sha256 `e8aff28ebffc8f27…` ~~~~text 28: PHASE LIQUID:L % 1 1 ! 29: CONST LIQUID:L : AL TI : ! ~~~~ [AlTi-98Sau-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlTi-98Sau-LB.tdb): LIQUID, type code %, sha256 `20c2d77856efb995…` ~~~~text 30: PHASE LIQUID:L % 1 1 ! 31: CONST LIQUID:L : AL TI : ! ~~~~ Example references (10 of 17; assessments first): - [doi:10.1016/j.jallcom.2007.10.061](https://doi.org/10.1016/j.jallcom.2007.10.061) V.T. Witusiewicz, A.A. Bondar, U. Hecht, S. Rex, T.Ya. Velikanova, The Al–B–Nb–Ti system, Journal of Alloys and Compounds 465, 64-77 (2008). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02646001](https://doi.org/10.1007/BF02646001) U.R. Kattner, J.-C. Lin, Y.A. Chang, Metall. Trans. A, 23A, 2081-90(1992). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-024-01124-9](https://doi.org/10.1007/s11669-024-01124-9) Zhi Liang, Ursula Kattner, Kamal Choudharry, Francesca Tavazza, Carelyn Campbell, Thermodynamic Assessments of Ti-Al, Ti-Fe, and Ti-Al-Fe Systems with Four-Sublattice Description of Ordered Body-Centered Cubic Phase and Density Functional Theory Data, J. Phase Equilib. Diffus. 45, 732-756 (2024). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S1359-6454(00)00118-X](https://doi.org/10.1016/S1359-6454%2800%2900118-X) I. Ohnuma, Y. Fujita, H. Mitsui, K. Ishikawa, R. Kainuma, K. Ishida, Acta Mater., 48, 3113-23(2000). _assessment that models this phase_ - [doi:10.1016/s0966-9795(97)00030-7](https://doi.org/10.1016/s0966-9795%2897%2900030-7) F. Zhang, S.L. Chen, Y.A. Chang, U.R. Kattner, A thermodynamic description of the TiAl system, Intermetallics 5, 471-482 (1997). _cited as the source of values for this phase_ - [doi:10.1361/154770306x109809](https://doi.org/10.1361/154770306x109809) Julius C. Schuster, Martin Palm, Reassessment of the binary Aluminum-Titanium phase diagram, JPED 27, 255-277 (2006). _cited as the source of values for this phase_ - [doi:10.1007/bf02644659](https://doi.org/10.1007/bf02644659) J. Cissé, H. W. Kerr, G. F. Bolling, The nucleation and solidification of Al-Ti alloys, Metall Trans 5, 633-641 (1974). _cited as the source of values for this phase_ - [doi:10.1007/s11661-001-0114-x](https://doi.org/10.1007/s11661-001-0114-x) J. Braun, M. Ellner, Phase equilibria investigations on the aluminum-rich part of the binary system Ti-Al, Metall Mater Trans A 32, 1037-1047 (2001). _cited as the source of values for this phase_ - [doi:10.1007/s11669-004-0110-0](https://doi.org/10.1007/s11669-004-0110-0) Marina Bulanova, Ludmila Tretyachenko, Marina Golovkova, Konstantin Meleshevich, Phase equilibria in the α-Ti-Al-Si region of the Ti-Si-Al system, J Phs Eqil and Diff 25, 209-229 (2004). _cited as the source of values for this phase_ - [doi:10.1016/0956-7151(90)90208-x](https://doi.org/10.1016/0956-7151%2890%2990208-x) E.L. Hall, Shyh-Chin Huang, Microstructures of rapidly-solidified binary TiAl alloys, Acta Metallurgica et Materialia 38, 539-549 (1990). _cited as the source of values for 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). https://doi.org/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). https://doi.org/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. ```bibtex @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} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).