# Np–U–Zr system > Np–U–Zr system: 20 accepted literature values (phase transition 20) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/NP-U-ZR.html · Markdown: https://data.orchid-project.org/systems/NP-U-ZR.md 20 accepted literature values from 1 paper(s) (model 20); 0 calculated phase diagram(s). 10 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/NP-U-ZR.json) · [CSV](https://data.orchid-project.org/systems/NP-U-ZR.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#NP-U-ZR) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/NP-U-ZR.html) · [Markdown](https://data.orchid-project.org/systems/NP-U-ZR.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | model | 20 | Table: Accepted values by property group | Property group | Values | |---|---:| | phase transition | 20 | ## Other properties ### Phase transition (20) Table: Phase transition, Np–U–Zr system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase transition | 1257 K | 1257 | other: R1; _alloy: Np 0.3, U 0.3, Zr 0.4_ | model | [1] Xie 2018 | Table 2, p. 6, row 2; `ORC-WUJAK666TC` | | | Phase transition | 1278 K | 1278 | other: R7; _alloy: Np 0.3, U 0.45, Zr 0.25_ | model | [1] Xie 2018 | Table 2, p. 6, row 20; `ORC-HJ4CC6KJ5Z` | | | Phase transition | 1328 K | 1328 | other: R6; _alloy: Np 0.2, U 0.7, Zr 0.1_ | model | [1] Xie 2018 | Table 2, p. 6, row 17; `ORC-CZPAOO76SZ` | | | Phase transition | 1389 K | 1389 | other: R6; _alloy: Np 0.2, U 0.7, Zr 0.1_ | model | [1] Xie 2018 | Table 2, p. 6, row 18; `ORC-ZCZAO3TCVS` | | | Phase transition | 1390 K | 1390 | other: R11; _alloy: Np 0.1, U 0.8, Zr 0.1_ | model | [1] Xie 2018 | Table 2, p. 6, row 29; `ORC-AKYYQ7XZKP` | | | Phase transition | 1400 K | 1400 | other: R9; _alloy: Np 0.16, U 0.6, Zr 0.24_ | model | [1] Xie 2018 | Table 2, p. 6, row 23; `ORC-QLDAW6UVH7` | | | Phase transition | 1429 K | 1429 | other: R5; _alloy: Np 0.15, U 0.55, Zr 0.3_ | model | [1] Xie 2018 | Table 2, p. 6, row 14; `ORC-L7M3O4FENW` | | | Phase transition | 1436 K | 1436 | other: R2; _alloy: Np 0.11, U 0.67, Zr 0.22_ | model | [1] Xie 2018 | Table 2, p. 6, row 5; `ORC-COBXRE22YN` | | | Phase transition | 1438 K | 1438 | other: R7; _alloy: Np 0.3, U 0.45, Zr 0.25_ | model | [1] Xie 2018 | Table 2, p. 6, row 21; `ORC-4JXZN5JKSC` | | | Phase transition | 1443 K | 1443 | other: R11; _alloy: Np 0.1, U 0.8, Zr 0.1_ | model | [1] Xie 2018 | Table 2, p. 6, row 30; `ORC-RK3FK74WQS` | | | Phase transition | 1447 K | 1447 | other: R4; _alloy: Np 0.05, U 0.8, Zr 0.15_ | model | [1] Xie 2018 | Table 2, p. 6, row 11; `ORC-QDJ6IHWJJ7` | | | Phase transition | 1467 K | 1467 | other: R10; _alloy: Np 0.08, U 0.69, Zr 0.23_ | model | [1] Xie 2018 | Table 2, p. 6, row 26; `ORC-Q6745PFED7` | | | Phase transition | 1505 K | 1505 | other: R3; _alloy: Np 0.05, U 0.7, Zr 0.25_ | model | [1] Xie 2018 | Table 2, p. 6, row 8; `ORC-WUI44DMYHM` | | | Phase transition | 1507 K | 1507 | other: R1; _alloy: Np 0.3, U 0.3, Zr 0.4_ | model | [1] Xie 2018 | Table 2, p. 6, row 3; `ORC-ZZFUXTFSMS` | | | Phase transition | 1515 K | 1515 | other: R4; _alloy: Np 0.05, U 0.8, Zr 0.15_ | model | [1] Xie 2018 | Table 2, p. 6, row 12; `ORC-EGZSNLQCRV` | | | Phase transition | 1532 K | 1532 | other: R9; _alloy: Np 0.16, U 0.6, Zr 0.24_ | model | [1] Xie 2018 | Table 2, p. 6, row 24; `ORC-COA2Z3M3P4` | | | Phase transition | 1552 K | 1552 | other: R2; _alloy: Np 0.11, U 0.67, Zr 0.22_ | model | [1] Xie 2018 | Table 2, p. 6, row 6; `ORC-LW7HUQR2SG` | | | Phase transition | 1572 K | 1572 | other: R10; _alloy: Np 0.08, U 0.69, Zr 0.23_ | model | [1] Xie 2018 | Table 2, p. 6, row 27; `ORC-QKO7E43QBU` | | | Phase transition | 1588 K | 1588 | other: R5; _alloy: Np 0.15, U 0.55, Zr 0.3_ | model | [1] Xie 2018 | Table 2, p. 6, row 15; `ORC-KT5NW35C5Y` | | | Phase transition | 1614 K | 1614 | other: R3; _alloy: Np 0.05, U 0.7, Zr 0.25_ | model | [1] Xie 2018 | Table 2, p. 6, row 9; `ORC-55BJEBFHUM` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Wei Xie, Dane Morgan, CALPHAD modeling and ab initio calculations of the Np-U-Zr system, Computational Materials Science 143, 505-514 (2018). [doi:10.1016/j.commatsci.2017.11.042](https://doi.org/10.1016/j.commatsci.2017.11.042) ## 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/).