# Nb–Ni–Ti system > Nb–Ni–Ti system: 30 accepted literature values (invariant reaction 30) 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-NI-TI.html · Markdown: https://data.orchid-project.org/systems/NB-NI-TI.md 30 accepted literature values from 2 paper(s) (model 30); 0 calculated phase diagram(s). 25 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-NI-TI.json) · [CSV](https://data.orchid-project.org/systems/NB-NI-TI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#NB-NI-TI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/NB-NI-TI.html) · [Markdown](https://data.orchid-project.org/systems/NB-NI-TI.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | model | 30 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 30 | ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Nb–Ni–Ti system (30) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 1745.15 | quasi-peritectic: L + NbNi3 -> χ1 + χ4 | L: Ni 0.839, Ti 0.081; NbNi3: Nb 0.196, Ni 0.75, Ti 0.054; χ1: Nb 0.13, Ni 0.75, Ti 0.12; χ4: Nb 0.15, Ni 0.8 | model | [1] Santhy 2015 | Table 10, p. 11, row 1; `ORC-SET2WI5ADM` | | | 1705.15 | quasi-peritectic: L + Ni3Ti -> χ1 + χ2 | L: Nb 0.013, Ni 0.748, Ti 0.239; Ni3Ti: Nb 0.023, Ni 0.756, Ti 0.222; χ1: Nb 0.13, Ni 0.75, Ti 0.12; χ2: Ni 0.75, Ti 0.2 | model | [1] Santhy 2015 | Table 10, p. 11, row 2; `ORC-MPNLLUJQO4` | | | 1679.15 | quasi-peritectic: L + NbNi3 -> χ1 + χ3 | L: Nb 0.095, Ni 0.607, Ti 0.297; NbNi3: Nb 0.198, Ni 0.749, Ti 0.053; χ1: Nb 0.13, Ni 0.75, Ti 0.12; χ3: Nb 0.15, Ni 0.56, Ti 0.29 | model | [1] Santhy 2015 | Table 10, p. 11, row 3; `ORC-7FSMS4HQNF` | | | 1595.15 | quasi-peritectic: L + χ4 -> (γ-Ni) + χ1 | L: Nb 0.016, Ni 0.859, Ti 0.125; χ4: Nb 0.15, Ni 0.8; (γ-Ni): Nb 0.085, Ni 0.629, Ti 0.286; χ1: Nb 0.13, Ni 0.75, Ti 0.12 | model | [1] Santhy 2015 | Table 10, p. 11, row 4; `ORC-VSTWEZCIEK` | | | 1589.15 | eutectic: L -> (γ-Ni) + Ni3Ti + χ1 | L: Nb 0.012, Ni 0.852, Ti 0.136; (γ-Ni): Nb 0.066, Ni 0.613, Ti 0.321; Ni3Ti: Nb 0.022, Ni 0.779, Ti 0.199; χ1: Nb 0.13, Ni 0.75, Ti 0.12 | model | [1] Santhy 2015 | Table 10, p. 11, row 5; `ORC-BBA5A5IAJV` | | | 1587.15 | quasi-peritectic: L + χ4 -> NbNi3 + (γ-Ni) | L: Nb 0.125, Ni 0.875; χ4: Nb 0.15, Ni 0.8; NbNi3: Nb 0.216, Ni 0.752, Ti 0.032; (γ-Ni): Nb 0.15, Ni 0.56, Ti 0.29 | model | [1] Santhy 2015 | Table 10, p. 11, row 6; `ORC-CA3S7WDJBH` | | | 1583.25 | quasi-peritectic: L+Nb15Ni80Ti5 -> NbNi3+Nb13Ni75Ti12 | L: Ni 0.71, Ti 0.072 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 13; `ORC-IYTC27VRVP` | | | 1567.85 | other: Ni3Ti+Nb13Ni75Ti12 -> L+Nb5Ni75Ti20 | L: Ni 0.7306, Ti 0.2156 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 15; `ORC-TW3U7SDQJX` | | | 1553.65 | eutectic: L -> γ+NbNi3+Nb15Ni80Ti5 | L: Ni 0.8514, Ti 0.0018 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 6; `ORC-AZCV5DLKHA` | | | 1524.15 | quasi-peritectic: L + χ3 -> χ1 + NiTi | L: Nb 0.018, Ni 0.585, Ti 0.396; χ3: Nb 0.15, Ni 0.56, Ti 0.29; χ1: Nb 0.13, Ni 0.75, Ti 0.12; NiTi: Ni 0.539, Ti 0.432 | model | [1] Santhy 2015 | Table 10, p. 11, row 7; `ORC-MA2U4VCRQP` | | | 1514.85 | quasi-peritectic: L+Nb15Ni80Ti5 -> γ+Nb13Ni75Ti12 | L: Ni 0.8223, Ti 0.1417 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 14; `ORC-ZTG6DIO4QQ` | | | 1514.65 | eutectic: L -> γ+Ni3Ti+Nb13Ni75Ti12 | L: Ni 0.8217, Ti 0.1427 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 5; `ORC-3SGOYLWSJH` | | | 1495.15 | quasi-peritectic: L + χ1 -> χ2 + NiTi | L: Nb 0.009, Ni 0.597, Ti 0.394; χ1: Nb 0.13, Ni 0.75, Ti 0.12; χ2: Ni 0.75, Ti 0.2; NiTi: Nb 0.022, Ni 0.545, Ti 0.432 | model | [1] Santhy 2015 | Table 10, p. 11, row 8; `ORC-AZIUGTYSHY` | | | 1457.15 | quasi-peritectic: L + χ2 -> NiTi + Ni3Ti | L: Nb 0.002, Ni 0.604, Ti 0.394; χ2: Ni 0.75, Ti 0.2; NiTi: Nb 0.008, Ni 0.544, Ti 0.449; Ni3Ti: Nb 0.028, Ni 0.749, Ti 0.223 | model | [1] Santhy 2015 | Table 10, p. 11, row 9; `ORC-VKRFT4LBSJ` | | | 1422.15 | eutectic: L -> χ5 + Nb7Ni6 + (β-Nb,Ti) | L: Nb 0.44, Ni 0.442, Ti 0.118; χ5: Nb 0.4, Ni 0.45, Ti 0.15; Nb7Ni6: Nb 0.558, Ni 0.442; (β-Nb,Ti): Nb 0.884, Ni 0.062, Ti 0.054 | model | [1] Santhy 2015 | Table 10, p. 11, row 10; `ORC-2SMTY7KEK7` | | | 1413.15 | quasi-peritectic: L + χ3 -> NbNi3 + χ5 | L: Nb 0.396, Ni 0.497, Ti 0.106; χ3: Nb 0.15, Ni 0.56, Ti 0.29; NbNi3: Nb 0.251, Ni 0.707, Ti 0.042; χ5: Nb 0.4, Ni 0.45, Ti 0.15 | model | [1] Santhy 2015 | Table 10, p. 11, row 11; `ORC-M6VWSONCXO` | | | 1412.15 | eutectic: L -> NbNi3 + χ5 + Nb7Ni6 | L: Nb 0.401, Ni 0.497, Ti 0.102; NbNi3: Nb 0.252, Ni 0.706, Ti 0.042; χ5: Nb 0.4, Ni 0.45, Ti 0.15; Nb7Ni6: Nb 0.535, Ni 0.465 | model | [1] Santhy 2015 | Table 10, p. 11, row 12; `ORC-EUYUL6DDBL` | | | 1407.45 | quasi-peritectic: L+α -> Nb6Ni7+Nb8Ni9Ti3 | L: Ni 0.4923, Ti 0.0979 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 9; `ORC-VNOUQJ5PJB` | | | 1407.15 | eutectic: L -> χ5 + (β-Nb,Ti) + χ3 | L: Nb 0.364, Ni 0.403, Ti 0.233; χ5: Nb 0.4, Ni 0.45, Ti 0.15; (β-Nb,Ti): Nb 0.798, Ni 0.068, Ti 0.134; χ3: Nb 0.15, Ni 0.56, Ti 0.29 | model | [1] Santhy 2015 | Table 10, p. 11, row 13; `ORC-4VDSLY2BEJ` | | | 1367.15 | quasi-peritectic: L + χ3 -> (β-Nb,Ti) + NiTi | L: Nb 0.25, Ni 0.362, Ti 0.387; χ3: Nb 0.15, Ni 0.56, Ti 0.29; (β-Nb,Ti): Nb 0.688, Ni 0.066, Ti 0.246; NiTi: Nb 0.085, Ni 0.496, Ti 0.419 | model | [1] Santhy 2015 | Table 10, p. 11, row 14; `ORC-CNYF7IMUWD` | | | 1365.65 | quasi-peritectic: L+Nb13Ni75Ti12 -> Nb15Ni56Ti29+Nb5Ni75Ti20 | L: Ni 0.617, Ti 0.311 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 12; `ORC-TEAK4WGY5J` | | | 1349.45 | quasi-peritectic: L+Ni3Ti -> NiTi+Nb5Ni75Ti20 | L: Ni 0.6136, Ti 0.3531 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 11; `ORC-IXV3CNIHUX` | | | 1336.85 | eutectic: L -> NiTi+Nb15Ni56Ti29+Nb5Ni75Ti20 | L: Ni 0.6078, Ti 0.3438 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 2; `ORC-6H5FCSE3HB` | | | 1317.55 | quasi-peritectic: L+Nb6Ni7 -> NbNi3+Nb8Ni9Ti3 | L: Ni 0.5654, Ti 0.0888 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 10; `ORC-CTKA2T2TT6` | | | 1300.35 | eutectic: L -> NbNi3+Nb8Ni9Ti3+Nb13Ni75Ti12 | L: Ni 0.5785, Ti 0.1277 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 4; `ORC-RPHLI6CXS4` | | | 1298.45 | eutectic: L -> Nb15Ni56Ti29+Nb8Ni9Ti3+Nb13Ni75Ti12 | L: Ni 0.574, Ti 0.1563 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 3; `ORC-DLZ3XPBP7Q` | | | 1213.15 | eutectic: L -> (β-Nb,Ti) + NiTi + NiTi2 | L: Nb 0.045, Ni 0.295, Ti 0.659; (β-Nb,Ti): Nb 0.325, Ni 0.038, Ti 0.636; NiTi: Nb 0.048, Ni 0.486, Ti 0.466; NiTi2: Ni 0.333, Ti 0.667 | model | [1] Santhy 2015 | Table 10, p. 11, row 15; `ORC-2BUDU5AANM` | | | 1205.05 | quasi-peritectic: L+Nb15Ni56Ti29 -> NiTi+Nb8Ni9Ti3 | L: Ni 0.3962, Ti 0.423 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 8; `ORC-57J4DPSKIO` | | | 1187.25 | quasi-peritectic: L+Nb8Ni9Ti3 -> α+NiTi | L: Ni 0.3802, Ti 0.4434 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 7; `ORC-N6WCILWFH2` | | | 1174.75 | eutectic: L -> α+NiTi+NiTi2 | L: Ni 0.3425, Ti 0.5505 | model | [2] Matsumoto 2005 | Table 4, p. 10, row 1; `ORC-Y5UPB4QUKL` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. K. Santhy, K.C. Hari Kumar, Thermodynamic reassessment of Nb-Ni-Ti system with order–disorder model, Journal of Alloys and Compounds 619, 733-747 (2015). [doi:10.1016/j.jallcom.2014.08.200](https://doi.org/10.1016/j.jallcom.2014.08.200) 2. Satoshi Matsumoto, Tatsuya Tokunaga, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Phase Equilibria of the Nb–Ni–Ti System, Mater. Trans. 46, 2920-2930 (2005). [doi:10.2320/matertrans.46.2920](https://doi.org/10.2320/matertrans.46.2920) ## 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/).