# Al–Pr phases > Al–Pr system: 13 phases (tier A 7, tier C 1, liquid 1, needs_review 4); 12 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-PR.html · Markdown: https://data.orchid-project.org/phases/pages/AL-PR.md 13 phases (tier A 7, tier C 1, liquid 1, needs_review 4); 12 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-PR) · [full JSON](https://data.orchid-project.org/phases/systems/AL-PR.json) · [Al–Pr system page](https://data.orchid-project.org/systems/AL-PR.html) · [Markdown](https://data.orchid-project.org/phases/pages/AL-PR.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Al–Pr system (13) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AL11PR3](#phase-al-pr-al11pr3); _phase:al-pr:al11pr3_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1518.42 K, x(Pr) 0.21429–0.21429 | 7 | 1 | | [AL11PR3_ALPHA](#phase-al-pr-al11pr3-alpha); _phase:al-pr:al11pr3-alpha_ | Al11La3 · oI28 · Immm (71) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1238 K, x(Pr) 0.21429–0.21429 | 0 | 1 | | [AL11PR3_BETA](#phase-al-pr-al11pr3-beta); _phase:al-pr:al11pr3-beta_ | | needs_review | stable in 1 of 1 calculated diagram(s): 1238–1525.74 K, x(Pr) 0.21429–0.21429 | 0 | 1 | | [AL2PR_C15](#phase-al-pr-al2pr-c15); _phase:al-pr:al2pr-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1752.66 K, x(Pr) 0.33333–0.33333 | 8 | 2 | | [AL3PR_D019](#phase-al-pr-al3pr-d019); _phase:al-pr:al3pr-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1346.62 K, x(Pr) 0.25–0.25 | 4 | 2 | | [ALPR](#phase-al-pr-alpr); _phase:al-pr:alpr_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–1171.55 K, x(Pr) 0.5–0.5 | 7 | 2 | | [ALPR2_C37](#phase-al-pr-alpr2-c37); _phase:al-pr:alpr2-c37_ | Co2Si · C37 · oP12 · Pnma (62) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1011.8 K, x(Pr) 0.66667–0.66667 | 7 | 2 | | [ALPR3](#phase-al-pr-alpr3); _phase:al-pr:alpr3_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–957.2 K, x(Pr) 0.75–0.75 | 9 | 2 | | [BCC_A2](#phase-al-pr-bcc-a2); _phase:al-pr:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 890–1204 K, x(Pr) 0.91437–1 | 6 | 2 | | [DHCP](#phase-al-pr-dhcp-a3); _phase:al-pr:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1133 K, x(Pr) 0.97157–1 | 3 | 2 | | [FCC_A1](#phase-al-pr-fcc-a1); _phase:al-pr:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–937.69 K, x(Pr) 0–0.00011 | 3 | 2 | | [HCP_A3](#phase-al-pr-hcp-a3); _phase:al-pr:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 | | [LIQUID](#phase-al-pr-liquid); _phase:al-pr:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 912.03–2500 K, x(Pr) 0–1 | 21 | 2 | ## AL11PR3 (Al–Pr) - Id: `phase:al-pr:al11pr3`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (dft_mp): Immm (71) — on-hull MP Pr3Al11 at x(PR)=0.2143 - Candidate (tdb_comment): Al11La3 · oI28 · Immm — AlPr-01Yin.tdb: 'Prototype Al11La3 (oI28, Immm)' - Stoichiometry: Al 0.7857, Pr 0.2143 - Stability: stable in 1 of 1 calculated diagram(s): 300–1518.42 K, x(Pr) 0.21429–0.21429 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:al11pr3) Names (3): _corpus: _corpus:phase:al-pr:al11pr3 _paper: _paper:10.1088/2053-1591/ab19fa:α\_Al11Pr3 _tdb: _tdb:AlPr-01Yin.tdb:AL11PR3 ### TDB models of AL11PR3 (1): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): AL11PR3, type code %, sha256 `0ae952d0952723dc…` ~~~~text 51: PHASE AL11PR3 % 2 11 3 ! 52: CONST AL11PR3 : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## AL11PR3_ALPHA (Al–Pr) - Id: `phase:al-pr:al11pr3-alpha`; status `assigned` - Structure: Al11La3 · oI28 · Immm (71); type `st:al11la3-oi28`; 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, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Al 0.7857, Pr 0.2143 - Stability: stable in 1 of 1 calculated diagram(s): 300–1238 K, x(Pr) 0.21429–0.21429 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:al11pr3-alpha) Names (2): _corpus: _corpus:phase:al-pr:al11pr3-alpha _tdb: _tdb:AlPr-19Lia.tdb:AL11PR3_ALPHA ### TDB models of AL11PR3_ALPHA (1): PHASE and CONSTITUENT statements as written [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): AL11PR3_ALPHA, type code %, sha256 `d758143d04999e54…` ~~~~text 54: PHASE AL11PR3_ALPHA % 2 11 3 ! 55: CONST AL11PR3_ALPHA : AL : PR : ! ~~~~ ## AL11PR3_BETA (Al–Pr) - Id: `phase:al-pr:al11pr3-beta`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (dft_mp): Immm (71) — on-hull MP Pr3Al11 at x(PR)=0.2143 - Candidate (sgte_mmc2): (Al11Pr3-beta) — Hallstedt 2025 mmc2 row for AL11PR3_BETA: Al11Pr3-beta - Stoichiometry: Al 0.7857, Pr 0.2143 - Stability: stable in 1 of 1 calculated diagram(s): 1238–1525.74 K, x(Pr) 0.21429–0.21429 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:al11pr3-beta) Names (2): _corpus: _corpus:phase:al-pr:al11pr3-beta _tdb: _tdb:AlPr-19Lia.tdb:AL11PR3_BETA ### TDB models of AL11PR3_BETA (1): PHASE and CONSTITUENT statements as written [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): AL11PR3_BETA, type code %, sha256 `d758143d04999e54…` ~~~~text 59: PHASE AL11PR3_BETA % 2 11 3 ! 60: CONST AL11PR3_BETA : AL : PR : ! ~~~~ ## AL2PR_C15 (Al–Pr) - Id: `phase:al-pr:al2pr-c15`; status `assigned` - Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaabtt and oqmd-19308, space group 227 - Stoichiometry: Al 0.6667, Pr 0.3333 - Stability: stable in 2 of 2 calculated diagram(s): 300–1752.66 K, x(Pr) 0.33333–0.33333 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:al2pr-c15) Names (6): _corpus: _corpus:phase:al-pr:al2pr-c15 _mp: _mp:mp-aaaaabtt _oqmd: _oqmd:oqmd-19308 _paper: _paper:10.1088/2053-1591/ab19fa:Al2Pr _tdb: _tdb:AlPr-01Yin.tdb:AL2PR_C15, tdb:AlPr-19Lia.tdb:AL2PR_C15 ### TDB models of AL2PR_C15 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): AL2PR_C15, type code %, sha256 `0ae952d0952723dc…` ~~~~text 61: PHASE AL2PR_C15 % 2 2 1 ! 62: CONST AL2PR_C15 : AL : PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): AL2PR_C15, type code %, sha256 `d758143d04999e54…` ~~~~text 69: PHASE AL2PR_C15 % 2 2 1 ! 70: CONST AL2PR_C15 : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## AL3PR_D019 (Al–Pr) - Id: `phase:al-pr:al3pr-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-aaaaasov and oqmd-18713, space group 194 - Stoichiometry: Al 0.7500, Pr 0.2500 - Stability: stable in 2 of 2 calculated diagram(s): 300–1346.62 K, x(Pr) 0.25–0.25 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:al3pr-d019) Names (6): _corpus: _corpus:phase:al-pr:al3pr-d019 _mp: _mp:mp-aaaaasov _oqmd: _oqmd:oqmd-18713 _paper: _paper:10.1088/2053-1591/ab19fa:Al3Pr _tdb: _tdb:AlPr-01Yin.tdb:AL3PR_D019, tdb:AlPr-19Lia.tdb:AL3PR_D019 ### TDB models of AL3PR_D019 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): AL3PR_D019, type code %, sha256 `0ae952d0952723dc…` ~~~~text 56: PHASE AL3PR_D019 % 2 3 1 ! 57: CONST AL3PR_D019 : AL : PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): AL3PR_D019, type code %, sha256 `d758143d04999e54…` ~~~~text 64: PHASE AL3PR_D019 % 2 3 1 ! 65: CONST AL3PR_D019 : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## ALPR (Al–Pr) - Id: `phase:al-pr:alpr`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:sgte_mmc2_row_disagrees_with_dft; dft_space_group_63_matches_5_structure_types; no_structure_token; sgte_mmc2_row_disagrees_with_dft - Candidate (dft_mp): Cmcm (63) — on-hull MP PrAl at x(PR)=0.5000 - Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Al1 Pr1 at x(PR)=0.5000 - Candidate (dft_space_group_and_stoichiometry): AlCe · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): TlI · B_f · oC8 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): CrB · B33 · oC8 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): HgNa · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): IrZr · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (literature_printed): AlDy · oP16 — printed with a label mapped to this phase - Stoichiometry: Al 0.5000, Pr 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1171.55 K, x(Pr) 0.5–0.5 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:alpr) Names (4): _corpus: _corpus:phase:al-pr:alpr _paper: _paper:10.1088/2053-1591/ab19fa:AlPr _tdb: _tdb:AlPr-01Yin.tdb:ALPR, tdb:AlPr-19Lia.tdb:ALPR ### TDB models of ALPR (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): ALPR, type code %, sha256 `0ae952d0952723dc…` ~~~~text 67: PHASE ALPR % 2 1 1 ! 68: CONST ALPR : AL : PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): ALPR, type code %, sha256 `d758143d04999e54…` ~~~~text 75: PHASE ALPR % 2 1 1 ! 76: CONST ALPR : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## ALPR2_C37 (Al–Pr) - Id: `phase:al-pr:alpr2-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, Pr 0.6667 - Stability: stable in 2 of 2 calculated diagram(s): 300–1011.8 K, x(Pr) 0.66667–0.66667 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:alpr2-c37) Names (4): _corpus: _corpus:phase:al-pr:alpr2-c37 _paper: _paper:10.1088/2053-1591/ab19fa:AlPr2 _tdb: _tdb:AlPr-01Yin.tdb:ALPR2_C37, tdb:AlPr-19Lia.tdb:ALPR2_C37 ### TDB models of ALPR2_C37 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): ALPR2_C37, type code %, sha256 `0ae952d0952723dc…` ~~~~text 72: PHASE ALPR2_C37 % 2 1 2 ! 73: CONST ALPR2_C37 : AL : PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): ALPR2_C37, type code %, sha256 `d758143d04999e54…` ~~~~text 80: PHASE ALPR2_C37 % 2 1 2 ! 81: CONST ALPR2_C37 : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## ALPR3 (Al–Pr) - Id: `phase:al-pr:alpr3`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_rows_disagree - Candidate (literature_printed): AuCu3 · cP4 — printed with a label mapped to this phase - Candidate (sgte_mmc2): Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for ALPR3: AlPr3 (low T) - Candidate (sgte_mmc2): AuCu3 · L1_2 · cP4 · Pm-3m (221) — Hallstedt 2025 mmc2 row for ALPR3: AlPr3, high T - Candidate (tdb_comment): AuCu3 · cP4 · Pm-3m — AlPr-01Yin.tdb: 'Prototype AuCu3 (cP4, Pm-3m), high T' - Candidate (tdb_comment): CdMg3 · hP8 · P6_3/mmc — AlPr-01Yin.tdb: 'Prototype CdMg3 (hP8, P6_3/mmc), low T' - Candidate (tdb_comment): AuCu3 · cP4 · Pm-3m — AlPr-19Lia.tdb: 'Prototype AuCu3 (cP4, Pm-3m), high T' - Candidate (tdb_comment): CdMg3 · hP8 · P6_3/mmc — AlPr-19Lia.tdb: 'Prototype CdMg3 (hP8, P6_3/mmc), low T' - Stoichiometry: Al 0.2500, Pr 0.7500 - Stability: stable in 2 of 2 calculated diagram(s): 300–957.2 K, x(Pr) 0.75–0.75 - Literature: 9 values (9 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:alpr3) Names (4): _corpus: _corpus:phase:al-pr:alpr3 _paper: _paper:10.1088/2053-1591/ab19fa:AlPr3 _tdb: _tdb:AlPr-01Yin.tdb:ALPR3, tdb:AlPr-19Lia.tdb:ALPR3 ### TDB models of ALPR3 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): ALPR3, type code %, sha256 `0ae952d0952723dc…` ~~~~text 78: PHASE ALPR3 % 2 1 3 ! 79: CONST ALPR3 : AL : PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): ALPR3, type code %, sha256 `d758143d04999e54…` ~~~~text 86: PHASE ALPR3 % 2 1 3 ! 87: CONST ALPR3 : AL : PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## BCC_A2 (Al–Pr) - Id: `phase:al-pr: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): 890–1204 K, x(Pr) 0.91437–1 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:bcc-a2) Names (4): _corpus: _corpus:phase:al-pr:bcc-a2 _paper: _paper:10.1088/2053-1591/ab19fa:bcc _tdb: _tdb:AlPr-01Yin.tdb:BCC_A2, tdb:AlPr-19Lia.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): BCC_A2, type code %, sha256 `0ae952d0952723dc…` ~~~~text 36: PHASE BCC_A2 % 2 1 3 ! 37: CONST BCC_A2 : AL PR% : VA : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): BCC_A2, type code %B, sha256 `d758143d04999e54…` ~~~~text 39: PHASE BCC_A2 %B 2 1 3 ! 40: CONST BCC_A2 : AL PR% : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## DHCP (Al–Pr) - Id: `phase:al-pr:dhcp-a3`; status `assigned` - Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 300–1133 K, x(Pr) 0.97157–1 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:dhcp-a3) Names (4): _corpus: _corpus:phase:al-pr:dhcp-a3 _paper: _paper:10.1088/2053-1591/ab19fa:dhcp _tdb: _tdb:AlPr-01Yin.tdb:DHCP, tdb:AlPr-19Lia.tdb:DHCP ### TDB models of DHCP (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): DHCP, type code %, sha256 `0ae952d0952723dc…` ~~~~text 46: PHASE DHCP % 1 1 ! 47: CONST DHCP : AL PR% : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): DHCP, type code %, sha256 `d758143d04999e54…` ~~~~text 49: PHASE DHCP % 1 1 ! 50: CONST DHCP : AL PR% : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## FCC_A1 (Al–Pr) - Id: `phase:al-pr: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): 300–937.69 K, x(Pr) 0–0.00011 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:fcc-a1) Names (4): _corpus: _corpus:phase:al-pr:fcc-a1 _paper: _paper:10.1088/2053-1591/ab19fa:fcc _tdb: _tdb:AlPr-01Yin.tdb:FCC_A1, tdb:AlPr-19Lia.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): FCC_A1, type code %, sha256 `0ae952d0952723dc…` ~~~~text 31: PHASE FCC_A1 % 2 1 1 ! 32: CONST FCC_A1 : AL : VA : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): FCC_A1, type code %A, sha256 `d758143d04999e54…` ~~~~text 34: PHASE FCC_A1 %A 2 1 1 ! 35: CONST FCC_A1 : AL% PR : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports values for this phase_ ## HCP_A3 (Al–Pr) - Id: `phase:al-pr:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stoichiometry: Al 1.0000 - Stability: not stable in 2 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:hcp-a3) Names (3): _corpus: _corpus:phase:al-pr:hcp-a3 _tdb: _tdb:AlPr-01Yin.tdb:HCP_A3, tdb:AlPr-19Lia.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): HCP_A3, type code %A, sha256 `0ae952d0952723dc…` ~~~~text 41: PHASE HCP_A3 %A 2 1 0.5 ! 42: CONST HCP_A3 : AL : VA : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): HCP_A3, type code %A, sha256 `d758143d04999e54…` ~~~~text 44: PHASE HCP_A3 %A 2 1 0.5 ! 45: CONST HCP_A3 : AL : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ ## LIQUID (Al–Pr) - Id: `phase:al-pr:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 912.03–2500 K, x(Pr) 0–1 - Literature: 21 values (21 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:al-pr:liquid) Names (4): _corpus: _corpus:phase:al-pr:liquid _paper: _paper:10.1088/2053-1591/ab19fa:L _tdb: _tdb:AlPr-01Yin.tdb:LIQUID, tdb:AlPr-19Lia.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [AlPr-01Yin.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-01Yin.tdb): LIQUID, type code %, sha256 `0ae952d0952723dc…` ~~~~text 26: PHASE LIQUID:L % 1 1 ! 27: CONST LIQUID:L : AL PR : ! ~~~~ [AlPr-19Lia.tdb](https://orchid-project.org/data/databases/sgte-binary/AlPr-19Lia.tdb): LIQUID, type code %, sha256 `d758143d04999e54…` ~~~~text 29: PHASE LIQUID:L % 1 1 ! 30: CONST LIQUID:L : AL PR : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.3139/ijmr-2001-0089](https://doi.org/10.3139/ijmr-2001-0089) F. Yin, X. Su, Z. Li, P. Zhang, Z. Metallkd., 92, 447-50(2001). _assessment that models this phase_ - [doi:10.1088/2053-1591/ab19fa](https://doi.org/10.1088/2053-1591/ab19fa) Jinfa Liao, Yuehui Liao, Hang Wang, Ligang Zhang, Yue Ma, Thermodynamic optimization of the Ni–Al–Pr ternary system, Mater. Res. Express 6, 086512 (2019). _reports 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).