# Al–Gd phases > Al–Gd system: 9 phases (tier A 6, tier C 2, liquid 1); 9 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-GD.html · Markdown: https://data.orchid-project.org/phases/pages/AL-GD.md 9 phases (tier A 6, tier C 2, liquid 1); 9 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-GD) · [full JSON](https://data.orchid-project.org/phases/systems/AL-GD.json) · [Al–Gd system page](https://data.orchid-project.org/systems/AL-GD.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-GD.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Gd system (9) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AL2GD3](#phase-al-gd-al2gd3); _phase:al-gd:al2gd3_ | Al2Gd3 · tP20 · P4_2nm (102) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1268.58 K, x(Gd) 0.6–0.6 | 10 | 2 | | [AL3GD_D019](#phase-al-gd-al3gd-d019); _phase:al-gd:al3gd-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1403.44 K, x(Gd) 0.25–0.25 | 8 | 2 | | [ALGD](#phase-al-gd-algd); _phase:al-gd:algd_ | AlDy · oP16 · Pbcm (57) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1340.98 K, x(Gd) 0.5–0.5 | 11 | 2 | | [ALGD2_C37](#phase-al-gd-algd2-c37); _phase:al-gd:algd2-c37_ | Co2Si · C37 · oP12 · Pnma (62) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1214.3 K, x(Gd) 0.66667–0.66667 | 8 | 2 | | [BCC_A2](#phase-al-gd-bcc-a2); _phase:al-gd:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1470.74–2499.86 K, x(Gd) 0.99264–1 | 4 | 2 | | [C15_LAVES](#phase-al-gd-c15-laves); _phase:al-gd:c15-laves_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1793.01 K, x(Gd) 0.32403–0.37116 | 12 | 2 | | [FCC_A1](#phase-al-gd-fcc-a1); _phase:al-gd:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–940.66 K, x(Gd) 0–0 | 4 | 2 | | [HCP_A3](#phase-al-gd-hcp-a3); _phase:al-gd:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1569.02 K, x(Gd) 0.99955–1 | 8 | 2 | | [LIQUID](#phase-al-gd-liquid); _phase:al-gd:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 902.82–2500 K, x(Gd) 0–1 | 32 | 2 | ## AL2GD3 (Al–Gd) - Id: `phase:al-gd:al2gd3`; status `assigned` - Structure: Al2Gd3 · tP20 · P4_2nm (102); type `st:al2gd3-tp20`; 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 0.4000, Gd 0.6000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1268.58 K, x(Gd) 0.6–0.6 - Literature: 10 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:al2gd3) Names (5): _corpus: _corpus:phase:al-gd:al2gd3 _paper: _paper:10.1016/j.calphad.2009.08.003:Al2Gd3, paper:10.1016/j.tca.2014.07.014:Al2Gd3 _tdb: _tdb:AlGd-03Cac-LB.tdb:AL2GD3, tdb:AlGd-14Bo.tdb:AL2GD3 ### TDB models of AL2GD3 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): AL2GD3, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 63: PHASE AL2GD3 % 2 2 3 ! 64: CONST AL2GD3 : AL : GD : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): AL2GD3, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 59: PHASE AL2GD3 % 2 2 3 ! 60: CONST AL2GD3 : AL : GD : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2009.08.003](https://doi.org/10.1016/j.calphad.2009.08.003) L.G. Zhang, H.Q. Dong, G.X. Huang, J. Shan, L.B. Liu, Z.P. Jin, Thermodynamic assessment of the Al–Cu–Gd system, Calphad 33, 664-672 (2009). _reports values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## AL3GD_D019 (Al–Gd) - Id: `phase:al-gd:al3gd-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: DFT agrees: on-hull mp-aaabxgfb and oqmd-320056, space group 194 - Stoichiometry: Al 0.7500, Gd 0.2500 - Stability: stable in 2 of 2 calculated diagram(s): 300–1403.44 K, x(Gd) 0.25–0.25 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:al3gd-d019) Names (6): _corpus: _corpus:phase:al-gd:al3gd-d019 _mp: _mp:mp-aaabxgfb _oqmd: _oqmd:oqmd-320056 _paper: _paper:10.1016/j.tca.2014.07.014:Al3Gd _tdb: _tdb:AlGd-03Cac-LB.tdb:AL3GD_D019, tdb:AlGd-14Bo.tdb:AL3GD_D019 ### TDB models of AL3GD_D019 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): AL3GD_D019, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 47: PHASE AL3GD_D019 % 2 3 1 ! 48: CONST AL3GD_D019 : AL : GD : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): AL3GD_D019, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 43: PHASE AL3GD_D019 % 2 3 1 ! 44: CONST AL3GD_D019 : AL : GD : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## ALGD (Al–Gd) - Id: `phase:al-gd:algd`; status `assigned` - Structure: AlDy · oP16 · Pbcm (57); type `st:aldy-op16`; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Al 0.5000, Gd 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1340.98 K, x(Gd) 0.5–0.5 - Literature: 11 values (11 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:algd) Names (5): _corpus: _corpus:phase:al-gd:algd _paper: _paper:10.1016/j.calphad.2009.08.003:AlGd, paper:10.1016/j.tca.2014.07.014:AlGd _tdb: _tdb:AlGd-03Cac-LB.tdb:ALGD, tdb:AlGd-14Bo.tdb:ALGD ### TDB models of ALGD (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): ALGD, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 57: PHASE ALGD % 2 1 1 ! 58: CONST ALGD : AL : GD : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): ALGD, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 53: PHASE ALGD % 2 1 1 ! 54: CONST ALGD : AL : GD : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2009.08.003](https://doi.org/10.1016/j.calphad.2009.08.003) L.G. Zhang, H.Q. Dong, G.X. Huang, J. Shan, L.B. Liu, Z.P. Jin, Thermodynamic assessment of the Al–Cu–Gd system, Calphad 33, 664-672 (2009). _reports values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## ALGD2_C37 (Al–Gd) - Id: `phase:al-gd:algd2-c37`; status `assigned` - Structure: Co2Si · C37 · oP12 · Pnma (62); type `st:c37-co2si-op12`; tier A: standard phase name; confidence high - Stoichiometry: Al 0.3333, Gd 0.6667 - Stability: stable in 2 of 2 calculated diagram(s): 300–1214.3 K, x(Gd) 0.66667–0.66667 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:algd2-c37) Names (4): _corpus: _corpus:phase:al-gd:algd2-c37 _paper: _paper:10.1016/j.tca.2014.07.014:AlGd2 _tdb: _tdb:AlGd-03Cac-LB.tdb:ALGD2_C37, tdb:AlGd-14Bo.tdb:ALGD2_C37 ### TDB models of ALGD2_C37 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): ALGD2_C37, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 68: PHASE ALGD2_C37 % 2 1 2 ! 69: CONST ALGD2_C37 : AL : GD : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): ALGD2_C37, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 64: PHASE ALGD2_C37 % 2 1 2 ! 65: CONST ALGD2_C37 : AL : GD : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## BCC_A2 (Al–Gd) - Id: `phase:al-gd: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 2 of 2 calculated diagram(s): 1470.74–2499.86 K, x(Gd) 0.99264–1 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:bcc-a2) Names (4): _corpus: _corpus:phase:al-gd:bcc-a2 _paper: _paper:10.1016/j.tca.2014.07.014:bcc_Gd _tdb: _tdb:AlGd-03Cac-LB.tdb:BCC_A2, tdb:AlGd-14Bo.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): BCC_A2, type code %B, sha256 `b9266d9fc2756bb1…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : AL GD% : VA : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): BCC_A2, type code %B, sha256 `1b8130c53b6f0eb9…` ~~~~text 33: PHASE BCC_A2 %B 2 1 3 ! 34: CONST BCC_A2 : AL GD% : VA : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## C15_LAVES (Al–Gd) - Id: `phase:al-gd:c15-laves`; status `assigned` - Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high - Caveat: partitioned order/disorder model in AlGd-03Cac-LB.tdb also describes the disordered state - Caveat: partitioned order/disorder model in AlGd-14Bo.tdb also describes the disordered state - Stability: stable in 2 of 2 calculated diagram(s): 300–1793.01 K, x(Gd) 0.32403–0.37116 - Literature: 12 values (12 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:c15-laves) Names (4): _corpus: _corpus:phase:al-gd:c15-laves _paper: _paper:10.1016/j.tca.2014.07.014:Al2Gd _tdb: _tdb:AlGd-03Cac-LB.tdb:C15_LAVES, tdb:AlGd-14Bo.tdb:C15_LAVES ### TDB models of C15_LAVES (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): C15_LAVES, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 52: PHASE C15_LAVES % 2 2 1 ! 53: CONST C15_LAVES : AL% GD : AL GD% : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): C15_LAVES, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 48: PHASE C15_LAVES % 2 2 1 ! 49: CONST C15_LAVES : AL% GD : AL GD% : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## FCC_A1 (Al–Gd) - Id: `phase:al-gd: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 2 of 2 calculated diagram(s): 300–940.66 K, x(Gd) 0–0 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:fcc-a1) Names (4): _corpus: _corpus:phase:al-gd:fcc-a1 _paper: _paper:10.1016/j.tca.2014.07.014:fcc_Al _tdb: _tdb:AlGd-03Cac-LB.tdb:FCC_A1, tdb:AlGd-14Bo.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): FCC_A1, type code %A, sha256 `b9266d9fc2756bb1…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : AL% GD : VA : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): FCC_A1, type code %A, sha256 `1b8130c53b6f0eb9…` ~~~~text 28: PHASE FCC_A1 %A 2 1 1 ! 29: CONST FCC_A1 : AL% GD : VA : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## HCP_A3 (Al–Gd) - Id: `phase:al-gd: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 2 of 2 calculated diagram(s): 300–1569.02 K, x(Gd) 0.99955–1 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:hcp-a3) Names (4): _corpus: _corpus:phase:al-gd:hcp-a3 _paper: _paper:10.1016/j.tca.2014.07.014:hcp_Gd _tdb: _tdb:AlGd-03Cac-LB.tdb:HCP_A3, tdb:AlGd-14Bo.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): HCP_A3, type code %A, sha256 `b9266d9fc2756bb1…` ~~~~text 42: PHASE HCP_A3 %A 2 1 0.5 ! 43: CONST HCP_A3 : AL GD% : VA : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): HCP_A3, type code %A, sha256 `1b8130c53b6f0eb9…` ~~~~text 38: PHASE HCP_A3 %A 2 1 0.5 ! 39: CONST HCP_A3 : AL GD% : VA : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _cited as the source of values for this phase_ ## LIQUID (Al–Gd) - Id: `phase:al-gd:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 902.82–2500 K, x(Gd) 0–1 - Literature: 32 values (32 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-gd:liquid) Names (4): _corpus: _corpus:phase:al-gd:liquid _paper: _paper:10.1016/j.tca.2014.07.014:Liquid _tdb: _tdb:AlGd-03Cac-LB.tdb:LIQUID, tdb:AlGd-14Bo.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [AlGd-03Cac-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-03Cac-LB.tdb): LIQUID, type code %, sha256 `b9266d9fc2756bb1…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : AL GD : ! ~~~~ [AlGd-14Bo.tdb](https://orchid-project.org/data/databases/sgte-binary/AlGd-14Bo.tdb): LIQUID, type code %, sha256 `1b8130c53b6f0eb9…` ~~~~text 23: PHASE LIQUID:L % 1 1 ! 24: CONST LIQUID:L : AL GD : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.tca.2014.07.014](https://doi.org/10.1016/j.tca.2014.07.014) H. Bo, L.B. Liu, J.L. Hu, X.D. Zhang, Z.P. Jin, Thermodynamic re-assessment of the Al–Gd and Gd–Zr systems, Thermochimica Acta 591, 51-56 (2014). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0966-9795(03)00151-1](https://doi.org/10.1016/S0966-9795%2803%2900151-1) G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/bf02883166](https://doi.org/10.1007/bf02883166) K.A. Gschneidner, F.W. Calderwood, The Al–Gd (aluminum–gadolinium) system, Bull. Alloy Phase Diagr. 9 (1988) 680–683. _cited as the source of values for this phase_ - [doi:10.1016/j.calphad.2010.08.004](https://doi.org/10.1016/j.calphad.2010.08.004) Liling Jin, Youn-Bae Kang, Patrice Chartrand, Carlton D. Fuerst, Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid, Calphad 34, 456-466 (2010). _cited as the source of values for this phase_ - [doi:10.1515/ijmr-2000-910108](https://doi.org/10.1515/ijmr-2000-910108) A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Gd–Al and Dy–Al systems: phase equilibria in the 0 to 66.7 at.% Al composition range, Z. Metallkd. 91 (2000) 17–23. _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).