Nb–Si–W system

21 accepted literature values from 1 paper(s) (experimental 12, model 9); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	12
model	9

Accepted values by property group
Property group	Values
invariant reaction	5
phase equilibrium	16

Invariant reactions (literature)

Invariant reactions reported in the literature for the Nb–Si–W system (5)
T (K)	Reaction / phases	Class	Source	Location
2567.87	other: L->β(Nb,W)5Si3+Bcc	model	[1] Li 2013	Table 6, p. 8, row 2 report
2222.25	quasi-peritectic: L+β(Nb,W)5Si3->Nb(W)3Si+Bcc	model	[1] Li 2013	Table 6, p. 8, row 5 report
2071.25	other: L->Nb(W)Si2+W(Nb)Si2	model	[1] Li 2013	Table 6, p. 8, row 1 report
2026.38	eutectic: L->β(Nb,W)5Si3+Nb(W)Si2+W(Nb)Si2	model	[1] Li 2013	Table 6, p. 8, row 3 report
1664.57	eutectic: L->W(Nb)Si2+Nb(W)Si2+Diamond–Si	model	[1] Li 2013	Table 6, p. 8, row 4 report

Other properties

Phase equilibrium (16)

Phase equilibrium, Nb–Si–W system
Property	T (K)	Phases / composition	Class	Source	Location
Phase assemblage		Nb(W)3Si + Bcc alloy: Si 0, W 0	model	[1] Li 2013	Table 7, p. 8, row 17 report
Phase assemblage		Nb(W)Si2 + W(Nb)Si2 + Diamond–Si alloy: Si 0, W 0	model	[1] Li 2013	Table 7, p. 8, row 14 report
Phase assemblage		β(Nb,W)5Si3 + Nb(W)Si2 alloy: Si 0, W 0	model	[1] Li 2013	Table 7, p. 8, row 13 report
Phase assemblage		β(Nb,W)5Si3 + Nb(W)Si2 + W(Nb)Si2 alloy: Si 0, W 0	model	[1] Li 2013	Table 7, p. 8, row 12 report
Phase composition		Nb(W)Si2 + Liquid Nb(W)Si2: Nb 0.2319, Si 0.6678, W 0.1003	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 4 report
Phase composition		Nb(W)Si2 + W(Nb)Si2 + Liquid Nb(W)Si2: Nb 0.2018, Si 0.6652, W 0.133; W(Nb)Si2: Nb 0.0614, Si 0.6666, W 0.272	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 7 report
Phase composition		Nb(W)Si2 + W(Nb)Si2 + Liquid Nb(W)Si2: Nb 0.1995, Si 0.6662, W 0.1343; W(Nb)Si2: Nb 0.0622, Si 0.666, W 0.2718	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 6 report
Phase composition		Nb(W)Si2 + W(Nb)Si2 + β(Nb,W)5Si3 Nb(W)Si2: Nb 0.2023, Si 0.6678, W 0.1299; W(Nb)Si2: Nb 0.0603, Si 0.6675, W 0.2721; β(Nb,W)5Si3: Nb 0.1616, Si 0.3759, W 0.4625	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 5 report
Phase composition		Nb(W)Si2 + β(Nb,W)5Si3 Nb(W)Si2: Nb 0.3239, Si 0.6679, W 0.0082; β(Nb,W)5Si3: Nb 0.4667, Si 0.3866, W 0.1467	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 1 report
Phase composition		Nb(W)Si2 + β(Nb,W)5Si3 Nb(W)Si2: Nb 0.2928, Si 0.6569, W 0.0503; β(Nb,W)5Si3: Nb 0.3266, Si 0.3822, W 0.2912	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 2 report
Phase composition		Nb(W)Si2 + β(Nb,W)5Si3 Nb(W)Si2: Nb 0.2931, Si 0.6682, W 0.0387; β(Nb,W)5Si3: Nb 0.3497, Si 0.3864, W 0.2639	experimental	[1] Li 2013 cites Li doi	Table 4, p. 5, row 3 report
Phase composition	1973	α(Nb,W)5Si3 + Bcc α(Nb,W)5Si3: Nb 0.606, Si 0.38, W 0.014; Bcc: Nb 0.743, Si 0.017, W 0.24	experimental	[1] Li 2013 cites Ma 2002 doi	Table 4, p. 5, row 10 report
Phase composition	1973	α(Nb,W)5Si3 + Bcc α(Nb,W)5Si3: Nb 0.608, Si 0.38, W 0.012; Bcc: Nb 0.895, Si 0.015, W 0.09	experimental	[1] Li 2013 cites Ma 2002 doi	Table 4, p. 5, row 8 report
Phase composition	1973	α(Nb,W)5Si3 + Bcc α(Nb,W)5Si3: Nb 0.6, Si 0.385, W 0.015; Bcc: Nb 0.55, Si 0.02, W 0.43	experimental	[1] Li 2013 cites Ma 2002 doi	Table 4, p. 5, row 11 report
Phase composition	1973	α(Nb,W)5Si3 + Bcc α(Nb,W)5Si3: Nb 0.606, Si 0.38, W 0.014; Bcc: Nb 0.824, Si 0.016, W 0.16	experimental	[1] Li 2013 cites Ma 2002 doi	Table 4, p. 5, row 9 report
Phase composition	1973	β(Nb,W)5Si3 + Bcc β(Nb,W)5Si3: Nb 0.5, Si 0.38, W 0.12; Bcc: Nb 0.32, Si 0.03, W 0.65	experimental	[1] Li 2013 cites Ma 2002 doi	Table 4, p. 5, row 12 report

Sources

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

Yan Li, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic optimization of the Nb–Si–W ternary system, Calphad 43, 112-123 (2013). doi:10.1016/j.calphad.2013.04.004

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 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_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}
}