# V–N system > V–N system: 0 accepted literature values (none) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/V-N.html · Markdown: https://data.orchid-project.org/systems/V-N.md 0 accepted literature values from 0 paper(s); 2 calculated phase diagram(s). Data: [interactive phase diagram](https://orchid-project.org/phase-diagrams/#V-N/VN-91Oht-LB.json) · [Markdown](https://data.orchid-project.org/systems/V-N.md) ## 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. Table: Assessments with a calculated phase diagram | TDB file | Assessment | SHA-256 | Links | |---|---|---|---| | VN-91Oht-LB.tdb | H. Ohtani, M. Hillert, Calphad, 15, 11-24(1991). [doi:10.1016/0364-5916(91)90022-C](https://doi.org/10.1016/0364-5916%2891%2990022-C) | `2acab6ca1bd63897a9d6f000cf221d869450f3b600a674586575805c6a405ad1` | [viewer](https://orchid-project.org/phase-diagrams/#V-N/VN-91Oht-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/VN-91Oht-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/VN-91Oht-LB.json) | | VN-97Du.tdb | Y. Du, R. Schmid-Fetzer, H. Ohtani, Z. Metallkd., 88, 545-56(1997). [doi:10.3139/ijmr-1997-0101](https://doi.org/10.3139/ijmr-1997-0101) | `4add1267df6db927db9e44b78ed1dd43b9d4a1c022c711c2e2572ab199bb3402` | [viewer](https://orchid-project.org/phase-diagrams/#V-N/VN-97Du.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/VN-97Du.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/VN-97Du.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | VN-91Oht-LB.tdb | 2436.01 | LIQUID (x(N) 0.22425) + HCP_A3 (x(N) 0.2991) + N2GAS (x(N) 1) | | VN-91Oht-LB.tdb | 2436.01 | LIQUID (x(N) 0.22439) + HCP_A3 (x(N) 0.29913) + N2GAS (x(N) 1) | | VN-91Oht-LB.tdb | 2360.68 | HCP_A3 (x(N) 0.30489) + FCC_A1 (x(N) 0.41253) + N2GAS (x(N) 1) | | VN-91Oht-LB.tdb | 2198.52 | LIQUID (x(N) 0.13289) + BCC_A2 (x(N) 0.14936) + HCP_A3 (x(N) 0.26891) | | VN-97Du.tdb | 2682.63 | LIQUID (x(N) 0.23333) + HCP_A3 (x(N) 0.30737) + N2GAS (x(N) 1) | | VN-97Du.tdb | 2682.63 | LIQUID (x(N) 0.23338) + HCP_A3 (x(N) 0.30738) + N2GAS (x(N) 1) | | VN-97Du.tdb | 2393.43 | HCP_A3 (x(N) 0.32133) + FCC_A1 (x(N) 0.37894) + N2GAS (x(N) 1) | | VN-97Du.tdb | 2132.28 | LIQUID (x(N) 0.12119) + BCC_A2 (x(N) 0.13643) + HCP_A3 (x(N) 0.27536) | ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859 - 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 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; the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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_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_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/).