# Nb–Si–Ti system > Nb–Si–Ti system: 17 accepted literature values (invariant reaction 13, phase equilibrium 4) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/NB-SI-TI.html · Markdown: https://data.orchid-project.org/systems/NB-SI-TI.md 17 accepted literature values from 1 paper(s) (experimental 4, unspecified 13); 0 calculated phase diagram(s). 3 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV. Data: [JSON](https://data.orchid-project.org/literature/systems/NB-SI-TI.json) · [CSV](https://data.orchid-project.org/systems/NB-SI-TI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#NB-SI-TI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/NB-SI-TI.html) · [Markdown](https://data.orchid-project.org/systems/NB-SI-TI.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 4 | | unspecified | 13 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 13 | | phase equilibrium | 4 | ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Nb–Si–Ti system (13) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 2628.15 | other: Liquid -> αNb(Ti)5Si3 + βNb(Ti)5Si3 | L: Nb 0.495, Si 0.372, Ti 0.133; Liquid: Nb 0.495, Si 0.372, Ti 0.133 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 4; `ORC-T3KKD5T4G2` | | | 2412.15 | other: Liquid -> αNb(Ti)5Si3 + Ti(Nb)5Si4 | L: Nb 0.318, Si 0.483, Ti 0.199; Liquid: Nb 0.318, Si 0.483, Ti 0.199 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 2; `ORC-QK46MBFNQI` | | | 2402.15 | quasi-peritectic: L + αNb(Ti)5Si3 -> Ti(Nb)5Si4 + βNb(Ti)5Si3 | L: Nb 0.373, Si 0.494, Ti 0.133 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 12; `ORC-YJXXPET35G` | | | 2342.15 | other: Liquid -> αNb(Ti)5Si3 + Ti(Nb)5Si3 | L: Nb 0.147, Si 0.365, Ti 0.489; Liquid: Nb 0.147, Si 0.365, Ti 0.489 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 3; `ORC-LFW3BVYJWL` | | | 2317.15 | quasi-peritectic: L + αNb(Ti)5Si3 -> Ti(Nb)5Si3 + Ti(Nb)5Si4 | L: Nb 0.134, Si 0.416, Ti 0.452 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 8; `ORC-IWS6S2ROL7` | | | 2245.15 | quasi-peritectic: L + βNb(Ti)5Si3 -> (Nb,Ti)3Si + αNb(Ti)5Si3 | L: Nb 0.786, Si 0.204, Ti 0.01 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 13; `ORC-W4E62D34PU` | | | 2132.15 | quasi-peritectic: L + βNb(Ti)5Si3 -> Nb(Ti)Si2 + Ti(Nb)5Si4 | L: Nb 0.407, Si 0.575, Ti 0.018 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 11; `ORC-PLWI6UYNLS` | | | 1904.15 | quasi-peritectic: L + αNb(Ti)5Si3 -> (Nb,Ti)3Si + Ti(Nb)5Si3 | L: Nb 0.224, Si 0.2, Ti 0.576 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 9; `ORC-KT4UYOFREB` | | | 1793.15 | other: Liquid -> Nb(Ti)Si2 + Ti(Nb)Si2 | L: Nb 0.039, Si 0.669, Ti 0.293; Liquid: Nb 0.039, Si 0.669, Ti 0.293 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 1; `ORC-HNWSSM3EYD` | | | 1771.15 | quasi-peritectic: L + Nb(Ti)Si2 -> Ti(Nb)Si2 + Ti(Nb)5Si4 | L: Nb 0.043, Si 0.625, Ti 0.332 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 6; `ORC-BELYITMRC3` | | | 1762.15 | quasi-peritectic: L + Ti(Nb)5Si4 -> Ti(Nb)Si2 + Ti(Nb)Si | L: Nb 0.022, Si 0.625, Ti 0.353 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 7; `ORC-SUYGDR4OAB` | | | 1623.15 | quasi-peritectic: L + (Nb,Ti)3Si -> Bcc + Ti(Nb)5Si3 | L: Nb 0.099, Si 0.139, Ti 0.762 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 10; `ORC-J3FWNTJ2JY` | | | 1610.15 | quasi-peritectic: L + Nb(Ti)Si2 -> Si + Ti(Nb)Si2 | L: Nb 0.02, Si 0.821, Ti 0.159 | unspecified | [1] Geng 2009 | Table 4, p. 8, row 5; `ORC-PRQEH76NFA` | | ## Other properties ### Phase equilibrium (4) Table: Phase equilibrium, Nb–Si–Ti system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase assemblage | | 1273.15 | Diamond Si; _alloy: Si 1, Ti 0_ | experimental | [1] Geng 2009 | Table 1, p. 2, row 3; `ORC-GQSCU2YFWR` | | | Phase assemblage | | 1473.15 | Diamond Si; _alloy: Si 1, Ti 0_ | experimental | [1] Geng 2009 | Table 1, p. 2, row 6; `ORC-JKF6XRV5WH` | | | Phase composition | | 1273.15 | Nb(Ti)Si2; _Nb(Ti)Si2: Nb 0.2855, Si 0.6801, Ti 0.0344_ | experimental | [1] Geng 2009 | Table 1, p. 2, row 1; `ORC-Z6QVAIYFTI` | | | Phase composition | | 1473.15 | Nb(Ti)Si2; _Nb(Ti)Si2: Nb 0.2849, Si 0.6803, Ti 0.0348_ | experimental | [1] Geng 2009 | Table 1, p. 2, row 4; `ORC-NKJ7EZADX6` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Tai Geng, Changrong Li, Jing Bao, Xinqing Zhao, Zhenmin Du, Cuiping Guo, Thermodynamic assessment of the Nb–Si–Ti system, Intermetallics 17, 343-357 (2009). [doi:10.1016/j.intermet.2008.11.011](https://doi.org/10.1016/j.intermet.2008.11.011) ## 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). https://doi.org/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). https://doi.org/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. ```bibtex @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} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).