# Cr–Ti–Zr system

> Cr–Ti–Zr system: 3 accepted literature values (invariant reaction 3) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/CR-TI-ZR.html · Markdown: https://data.orchid-project.org/systems/CR-TI-ZR.md

3 accepted literature values from 1 paper(s) (unspecified 3); 0 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/CR-TI-ZR.json) · [CSV](https://data.orchid-project.org/systems/CR-TI-ZR.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CR-TI-ZR) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CR-TI-ZR.html) · [Markdown](https://data.orchid-project.org/systems/CR-TI-ZR.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| unspecified | 3 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 3 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Cr–Ti–Zr system (3)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1846 | L + C36 -> BCC_A2 + C15 | L: Cr 0.8, Ti 0.01; C36: Cr 0.68, Ti 0.005; BCC_A2: Cr 0.96, Ti 0.005; C15: Cr 0.68, Ti 0.007 | unspecified | [1] Gierlotka 2017 | Table III, p. 7, row 1; `ORC-ICU6RBR5X6` |  |
| 1805 | L + C15 -> BCC_A2 + C36 | L: Cr 0.75, Ti 0.1; C15: Cr 0.68, Ti 0.06; BCC_A2: Cr 0.92, Ti 0.04; C36: Cr 0.67, Ti 0.07 | unspecified | [1] Gierlotka 2017 | Table III, p. 7, row 2; `ORC-5Q2VRADUVI` |  |
| 1552 | L + C15 -> C36 + BCC_A2 | L: Cr 0.29, Ti 0.39; C15: Cr 0.66, Ti 0.1; C36: Cr 0.66, Ti 0.12; BCC_A2: Cr 0.15, Ti 0.35 | unspecified | [1] Gierlotka 2017 | Table III, p. 7, row 3; `ORC-CMM4MKG2YO` |  |

## Sources

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

1. Wojciech Gierlotka, Cho-yu Lee, Thermodynamic description of hydrogen storage materials Cr–Ti–Zr and Fe–Ti–Zr, J. Mater. Res. 32, 1386-1396 (2017). [doi:10.1557/jmr.2017.78](https://doi.org/10.1557/jmr.2017.78)

## 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=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).