Ni–W system

24 accepted literature values from 1 paper(s) (experimental 11, model 13); 3 calculated phase diagram(s). 3 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (9) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	11
model	13

Accepted values by property group
Property group	Values
invariant reaction	8
formation	4
heat capacity / entropy / enthalpy	12

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
NiW-08Pop.tdb	J. Popovic, P. Broz, J. Bursik, Intermetallics, 16, 884-88(2008). doi:10.1016/j.intermet.2008.04.003	`e3c06f0d3fa4f8bf0345ee24543670bbf4c4d3fdeb072e4edfdc1aa8d26a7db7`	viewer · TDB · JSON
NiW-17Iso.tdb	I. Isomaki, M. Hamalainien, M.H. Braga, M. Gasik, Int. J. Mater. Res., 108, 1025-35(2017). doi:10.3139/146.111557	`feb57ad6eaab269b21a6d82e9f84a84ada4eb1398cfd7942e3abb66ee92787a8`	viewer · TDB · JSON
NiW-86Fer-LB.tdb	A. Fernandez Guillermet, L. Ostlund, Metall. Trans. A, 17A, 1809-23(1986). doi:10.1007/BF02817278	`55903dd3fecb1bf80dbb7a655088311b6771858e8562117b0ddfc69ac803b9e7`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
NiW-08Pop.tdb	1771.07	FCC_A1 (x(W) 0.17637) + LIQUID (x(W) 0.20402) + BCC_A2 (x(W) 0.99778)
NiW-08Pop.tdb	1340.79	FCC_A1 (x(W) 0.16427) + NIW (x(W) 0.5) + BCC_A2 (x(W) 0.99971)
NiW-08Pop.tdb	1340.79	FCC_A1 (x(W) 0.16428) + NIW (x(W) 0.5) + BCC_A2 (x(W) 0.99971)
NiW-08Pop.tdb	1336.5	NIW (x(W) 0.5) + NIW2 (x(W) 0.66667) + BCC_A2 (x(W) 0.99972)
NiW-08Pop.tdb	1275.07	FCC_A1 (x(W) 0.16157) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-08Pop.tdb	1275.07	FCC_A1 (x(W) 0.16158) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-08Pop.tdb	1275.07	FCC_A1 (x(W) 0.16156) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-08Pop.tdb	322.34	FCC_A1 (x(W) 0.11859) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-08Pop.tdb	322.34	FCC_A1 (x(W) 0.11859) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-08Pop.tdb	322.34	FCC_A1 (x(W) 0.11859) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-17Iso.tdb	1767.73	FCC_A1 (x(W) 0.17628) + LIQUID (x(W) 0.20697) + BCC_A2 (x(W) 0.99781)
NiW-17Iso.tdb	1289.52	FCC_A1 (x(W) 0.16277) + NI4X_D1A (x(W) 0.2) + BCC_A2 (x(W) 0.99979)
NiW-17Iso.tdb	1289.52	FCC_A1 (x(W) 0.16278) + NI4X_D1A (x(W) 0.2) + BCC_A2 (x(W) 0.99979)
NiW-17Iso.tdb	848.8	NI4X_D1A (x(W) 0.2) + NI3W_D0A (x(W) 0.25) + BCC_A2 (x(W) 1)
NiW-17Iso.tdb	848.8	NI4X_D1A (x(W) 0.2) + NI3W_D0A (x(W) 0.25) + BCC_A2 (x(W) 1)
NiW-17Iso.tdb	783.36	NI8W (x(W) 0.11111) + FCC_A1 (x(W) 0.11853) + NI4X_D1A (x(W) 0.2)
NiW-17Iso.tdb	783.36	NI8W (x(W) 0.11111) + FCC_A1 (x(W) 0.11851) + NI4X_D1A (x(W) 0.2)
NiW-17Iso.tdb	304.84	NI8W (x(W) 0.11111) + NI4X_D1A (x(W) 0.2) + NI3W_D0A (x(W) 0.25)
NiW-86Fer-LB.tdb	1771.07	FCC_A1 (x(W) 0.17637) + LIQUID (x(W) 0.20402) + BCC_A2 (x(W) 0.99778)
NiW-86Fer-LB.tdb	1340.8	FCC_A1 (x(W) 0.16427) + NIW (x(W) 0.5) + BCC_A2 (x(W) 0.99971)
NiW-86Fer-LB.tdb	1340.8	FCC_A1 (x(W) 0.16428) + NIW (x(W) 0.5) + BCC_A2 (x(W) 0.99971)
NiW-86Fer-LB.tdb	1299.88	NIW (x(W) 0.5) + NIW2 (x(W) 0.66667) + BCC_A2 (x(W) 0.99978)
NiW-86Fer-LB.tdb	1299.88	NIW (x(W) 0.5) + NIW2 (x(W) 0.66667) + BCC_A2 (x(W) 0.99978)
NiW-86Fer-LB.tdb	1299.88	NIW (x(W) 0.5) + NIW2 (x(W) 0.66667) + BCC_A2 (x(W) 0.99978)
NiW-86Fer-LB.tdb	1275.06	FCC_A1 (x(W) 0.16032) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-86Fer-LB.tdb	1275.06	FCC_A1 (x(W) 0.16032) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-86Fer-LB.tdb	1275.06	FCC_A1 (x(W) 0.1603) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-86Fer-LB.tdb	400.64	FCC_A1 (x(W) 0.1058) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)
NiW-86Fer-LB.tdb	400.64	FCC_A1 (x(W) 0.10579) + NI4X_D1A (x(W) 0.2) + NIW (x(W) 0.5)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull NiW-08Pop · CALPHAD hull NiW-86Fer-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ni–W system (8)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1340.7	NiW -> fcc + bcc(W)	NiW: Ni 0.5, W 0.5	model	[1] Guillermet 1986	Table X, p. 9, row 3 report
1325	NiW -> fcc + bcc(W)	NiW: Ni 0.5, W 0.5	experimental	[1] Guillermet 1986 cites Hofmann 1983	Table X, p. 9, row 2 report
1303	NiW -> fcc + bcc(W)	NiW: Ni 0.5, W 0.5	experimental	[1] Guillermet 1986 cites Walsh 1973 doi	Table X, p. 9, row 1 report
1300.3	NiW2 -> NiW + bcc(W)	NiW2: Ni 0.333333, W 0.666667; NiW: Ni 0.5, W 0.5	model	[1] Guillermet 1986	Table X, p. 9, row 5 report
1283	NiW2 -> NiW + bcc(W)	NiW2: Ni 0.333333, W 0.666667; NiW: Ni 0.5, W 0.5	experimental	[1] Guillermet 1986 cites Poulsen 1974 doi	Table X, p. 9, row 4 report
1275	Ni4W -> NiW + fcc	Ni4W: Ni 0.8, W 0.2; NiW: Ni 0.5, W 0.5	model	[1] Guillermet 1986	Table X, p. 9, row 8 report
1273	Ni4W -> NiW + fcc	Ni4W: Ni 0.8, W 0.2; NiW: Ni 0.5, W 0.5	experimental	[1] Guillermet 1986 cites Poulsen 1974 doi	Table X, p. 9, row 7 report
1243	Ni4W -> NiW + fcc	Ni4W: Ni 0.8, W 0.2; NiW: Ni 0.5, W 0.5	experimental	[1] Guillermet 1986 cites Ellinger 1940	Table X, p. 9, row 6 report

Other properties

Formation (4)

Formation, Ni–W system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Gibbs energy of formation printed: Gibbs Energy of Formation	-3.6797 kJ/mol-atom	1173	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XIVo, p. 14, row 2 report
Gibbs energy of formation printed: Gibbs Energy of Formation	-4.8137 kJ/mol-atom	1173	Ni4W alloy: W 0.2	model	[1] Guillermet 1986 cites Meshkov	Table XIVo, p. 14, row 1 report
Gibbs energy of formation printed: Gibbs Energy of Formation	-2.6795 kJ/mol-atom	1173	NiW alloy: W 0.5	model	[1] Guillermet 1986	Table XIVo, p. 14, row 4 report
Gibbs energy of formation printed: Gibbs Energy of Formation	-2.9152 kJ/mol-atom	1173	NiW alloy: W 0.5	model	[1] Guillermet 1986 cites Meshkov	Table XIVo, p. 14, row 3 report

Heat capacity / entropy / enthalpy (12)

Heat capacity / entropy / enthalpy, Ni–W system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Heat capacity printed: Mean Heat Capacity	25.466 J/mol (basis unstated)/K	580.1	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 1 report
Heat capacity printed: Mean Heat Capacity	26.075 J/mol (basis unstated)/K	580.1	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 2 report
Heat capacity printed: Mean Heat Capacity	25.782 J/mol (basis unstated)/K	686.1	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 3 report
Heat capacity printed: Mean Heat Capacity	26.534 J/mol (basis unstated)/K	686.1	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 4 report
Heat capacity printed: Mean Heat Capacity	26.951 J/mol (basis unstated)/K	783.1	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 6 report
Heat capacity printed: Mean Heat Capacity	26.657 J/mol (basis unstated)/K	783.1	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 5 report
Heat capacity printed: Mean Heat Capacity	26.902 J/mol (basis unstated)/K	882.5	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 7 report
Heat capacity printed: Mean Heat Capacity	27.376 J/mol (basis unstated)/K	882.5	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 8 report
Heat capacity printed: Mean Heat Capacity	27.113 J/mol (basis unstated)/K	974.2	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 9 report
Heat capacity printed: Mean Heat Capacity	27.766 J/mol (basis unstated)/K	974.2	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 10 report
Heat capacity printed: Mean Heat Capacity	28.19 J/mol (basis unstated)/K	1074	Ni4W alloy: W 0.2	model	[1] Guillermet 1986	Table XlII, p. 14, row 12 report
Heat capacity printed: Mean Heat Capacity	27.813 J/mol (basis unstated)/K	1074	Ni4W alloy: W 0.2	experimental	[1] Guillermet 1986 cites Proshina 1962	Table XlII, p. 14, row 11 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

A. Fernández Guillermet, L. Östlund, Experimental and theoretical study of the phase equilibria in the fe-ni-w system, Metall Trans A 17, 1809-1823 (1986). doi:10.1007/bf02817278

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}