Re–W phases

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

Data: interactive registry · full JSON · Re–W system page · Markdown · field reference

Phases of the Re–W system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
CHI_A12 phase:re-w:a12-chi	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2398.06 K, x(W) 0.17241–0.291	3	2
BCC_A2 phase:re-w:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–3694.9 K, x(W) 0.62691–1	3	2
SIGMA_D8B phase:re-w:d8b-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 919.01–3271.84 K, x(W) 0.28421–0.5822	4	2
DIS_SIGMA phase:re-w:dis-sigma		needs_review	no calculated diagram	0	1
FCC_A1 phase:re-w:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	2
HCP_A3 phase:re-w:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–3459 K, x(W) 0–0.16386	2	2
LIQUID phase:re-w:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 3103.9–4000 K, x(W) 0–1	4	2
SIGMA_OLD phase:re-w:old-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 850.63–2490.07 K, x(W) 0.2853–0.56605	2	1

CHI_A12 (Re–W)

Id: phase:re-w:a12-chi; status assigned
Structure: alpha-Mn · A12 · cI58 · I-43m (217); type st:a12-alpha-mn-ci58; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–2398.06 K, x(W) 0.17241–0.291
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:re-w:a12-chi, corpus:phase:re-w:chi-a12
paper: paper:10.1016/s0925-8388(99)00597-6:hcp (hcp/χ), paper:10.1016/s0925-8388(99)00597-6:χ (χ/hcp)
tdb: tdb:ReW-00Liu-LB.tdb:CHI_A12, tdb:ReW-02Fri.tdb:CHI_A12

TDB models of CHI_A12 (2): PHASE and CONSTITUENT statements as written

ReW-00Liu-LB.tdb: CHI_A12, type code %, sha256 d374ef87267bcebe…

40: PHASE CHI_A12 % 3 24 10 24 !
41: CONST CHI_A12 : RE : RE W : RE W : !

ReW-02Fri.tdb: CHI_A12, type code %, sha256 e4eb2c9648c73235…

47: PHASE CHI_A12 % 3 24 10 24 !
48: CONST CHI_A12 : RE : W : RE W : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; reports values for this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

BCC_A2 (Re–W)

Id: phase:re-w: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 1 of 1 calculated diagram(s): 300–3694.9 K, x(W) 0.62691–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:re-w:bcc-a2
paper: paper:10.1016/s0925-8388(99)00597-6:bcc (bcc/σ), paper:10.1016/s0925-8388(99)00597-6:σ (σ/bcc) range high
tdb: tdb:ReW-00Liu-LB.tdb:BCC_A2, tdb:ReW-02Fri.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

ReW-00Liu-LB.tdb: BCC_A2, type code %B, sha256 d374ef87267bcebe…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : RE W% : VA : !

ReW-02Fri.tdb: BCC_A2, type code %B, sha256 e4eb2c9648c73235…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : RE W% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; reports values for this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

SIGMA_D8B (Re–W)

Id: phase:re-w:d8b-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in ReW-02Fri.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 919.01–3271.84 K, x(W) 0.28421–0.5822
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:re-w:d8b-sigma, corpus:phase:re-w:sigma-d8b
paper: paper:10.1016/s0925-8388(99)00597-6:σ
tdb: tdb:ReW-00Liu-LB.tdb:SIGMA_D8B, tdb:ReW-02Fri.tdb:SIGMA_D8B

TDB models of SIGMA_D8B (2): PHASE and CONSTITUENT statements as written

ReW-00Liu-LB.tdb: SIGMA_D8B, type code %, sha256 d374ef87267bcebe…

45: PHASE SIGMA_D8B % 3 10 4 16 !
46: CONST SIGMA_D8B : RE : W : RE W : !

ReW-02Fri.tdb: SIGMA_D8B, type code %P, sha256 e4eb2c9648c73235…

57: PHASE SIGMA_D8B %P 5 2 4 8 8 8 !
58: CONST SIGMA_D8B : RE W : RE W : RE W : RE W : RE W : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; reports values for this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

DIS_SIGMA (Re–W)

Id: phase:re-w:dis-sigma; status needs_review
No structure assigned. Why: unrecognised_name_tokens:DIS
Candidate (name_token): sigma-CrFe · D8_b · tP30 · P4_2/mnm (136) — Strukturbericht/word 'D8B' in the TDB name
Stability: no calculated diagram
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:re-w:dis-sigma
tdb: tdb:ReW-02Fri.tdb:DIS_SIGMA

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

ReW-02Fri.tdb: DIS_SIGMA, type code %, sha256 e4eb2c9648c73235…

52: PHASE DIS_SIGMA % 1 1 !
53: CONST DIS_SIGMA : RE W : !

Example references (1 of 1; assessments first):

doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

FCC_A1 (Re–W)

Id: phase:re-w:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:re-w:fcc-a1
tdb: tdb:ReW-00Liu-LB.tdb:FCC_A1, tdb:ReW-02Fri.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

ReW-00Liu-LB.tdb: FCC_A1, type code %A, sha256 d374ef87267bcebe…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : RE W : VA : !

ReW-02Fri.tdb: FCC_A1, type code %A, sha256 e4eb2c9648c73235…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : RE W : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

HCP_A3 (Re–W)

Id: phase:re-w: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 1 of 1 calculated diagram(s): 300–3459 K, x(W) 0–0.16386
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:re-w:hcp-a3
paper: paper:10.1016/s0925-8388(99)00597-6:hcp
tdb: tdb:ReW-00Liu-LB.tdb:HCP_A3, tdb:ReW-02Fri.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

ReW-00Liu-LB.tdb: HCP_A3, type code %A, sha256 d374ef87267bcebe…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : RE% W : VA : !

ReW-02Fri.tdb: HCP_A3, type code %A, sha256 e4eb2c9648c73235…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : RE% W : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; reports values for this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

LIQUID (Re–W)

Id: phase:re-w:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 3103.9–4000 K, x(W) 0–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:re-w:liquid
paper: paper:10.1016/s0925-8388(99)00597-6:liq
tdb: tdb:ReW-00Liu-LB.tdb:LIQUID, tdb:ReW-02Fri.tdb:LIQUID

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

ReW-00Liu-LB.tdb: LIQUID, type code %, sha256 d374ef87267bcebe…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : RE W : !

ReW-02Fri.tdb: LIQUID, type code %, sha256 e4eb2c9648c73235…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : RE W : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; reports values for this phase
doi:10.1103/PhysRevB.66.012203 S.G. Fries, B. Sundman, Phys. Rev. B, 66, 012203(2002).
assessment that models this phase

SIGMA_OLD (Re–W)

Id: phase:re-w:old-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 850.63–2490.07 K, x(W) 0.2853–0.56605
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:re-w:old-sigma, corpus:phase:re-w:sigma-old
paper: paper:10.1016/s0925-8388(99)00597-6:σ
tdb: tdb:ReW-00Liu-LB.tdb:SIGMA_OLD

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

ReW-00Liu-LB.tdb: SIGMA_OLD, type code %, sha256 d374ef87267bcebe…

50: PHASE SIGMA_OLD % 3 8 4 18 !
51: CONST SIGMA_OLD : RE : W : RE W : !

Example references (1 of 1; assessments first):

doi:10.1016/S0925-8388(99)00597-6 Z.-K. Liu, Y.A. Chang, J. Alloys Compd., 299, 153-62(2000).
assessment that models this phase; 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). doi:10.5281/zenodo.23735970
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}