# Fe–Si–Zn system

> Fe–Si–Zn system: 35 accepted literature values (invariant reaction 35) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/FE-SI-ZN.html · Markdown: https://data.orchid-project.org/systems/FE-SI-ZN.md

35 accepted literature values from 2 paper(s) (experimental 7, model 28); 0 calculated phase diagram(s).

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

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 7 |
| model | 28 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 35 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Fe–Si–Zn system (35)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1449 | L1 \<-> L2+Fe2Si+BCC_B2 | L1: Fe 0.644, Si 0.321, Zn 0.036; L: Fe 0.644, Si 0.321, Zn 0.036 | model | [1] Yuan 2014 | Table 4, p. 6, row 2; `ORC-SAJEM7KTBY` |  |
| 1446 | L1 \<-> L2+FeSi+Fe2Si | L1: Fe 0.629, Si 0.336, Zn 0.035; L: Fe 0.629, Si 0.336, Zn 0.035 | model | [1] Yuan 2014 | Table 4, p. 6, row 4; `ORC-L6CL7C5ULS` |  |
| 1442 | L1 \<-> L2+Fe2Si+BCC_B2 | L1: Fe 0.049, Si 0.005, Zn 0.946; L: Fe 0.049, Si 0.005, Zn 0.946 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 1; `ORC-MOJXSZVEXY` |  |
| 1437 | L1 \<-> L2+FeSi+Fe2Si | L1: Fe 0.038, Si 0.007, Zn 0.955; L: Fe 0.038, Si 0.007, Zn 0.955 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 3; `ORC-AWWNDEBZVD` |  |
| 1403 | FeSi+L1 \<-> L2+FeSi2_H | L1: Fe 0.025, Si 0.357, Zn 0.618; L: Fe 0.025, Si 0.357, Zn 0.618 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 5; `ORC-H7V36ZMIFF` |  |
| 1385 | L2+Fe2Si \<-> BCC_B2+FeSi | L2: Fe 0.038, Si 0.004, Zn 0.958; L: Fe 0.038, Si 0.004, Zn 0.958 | model | [1] Yuan 2014 | Table 4, p. 6, row 7; `ORC-W425P2OXEM` |  |
| 1366 | L2+Fe2Si \<-> BCC_B2+FeSi | L2: Fe 0.035, Si 0.004, Zn 0.961; L: Fe 0.035, Si 0.004, Zn 0.961 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 6; `ORC-7HNQXNDJ6J` |  |
| 1276 | L+FeSi2_H+FeSi \<-> FeSi2_L | L: Fe 0.002, Si 0.144, Zn 0.854 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 8; `ORC-D3K5NK5SKU` |  |
| 1256 | L+FeSi2_H+FeSi \<-> FeSi2_L | L: Fe 0.001, Si 0.134, Zn 0.865 | model | [1] Yuan 2014 | Table 4, p. 6, row 9; `ORC-GLSOIGTJZ6` |  |
| 1233 | L+FeSi2_H \<-> (Si)+FeSi2_L | L: Fe 0.001, Si 0.137, Zn 0.862 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 10; `ORC-A2NNPQDHLM` |  |
| 1217 | L+FeSi2_H \<-> (Si)+FeSi2_L | L: Fe 0.001, Si 0.124, Zn 0.876 | model | [1] Yuan 2014 | Table 4, p. 6, row 11; `ORC-OR7RVOVHOF` |  |
| 1055 | L+BCC_A2 \<-> BCC_B2+Γ | L: Fe 0.088, Si 0, Zn 0.912 | model | [1] Yuan 2014 | Table 4, p. 6, row 13; `ORC-AMUCPXZVU4` |  |
| 1055 | L+BCC_A2 \<-> BCC_B2+Γ | L: Fe 0.088, Si 0, Zn 0.912 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 12; `ORC-UNOPSW6RRT` |  |
| 946 | L+BCC_B2+Γ \<-> δ | L: Fe 0.038, Si 0, Zn 0.962 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 14; `ORC-C4D6AR4KB7` |  |
| 946 | L+BCC_B2+Γ \<-> δ | L: Fe 0.038, Si 0, Zn 0.962 | model | [1] Yuan 2014 | Table 4, p. 6, row 15; `ORC-WXUKJCIRR5` |  |
| 933 | L+BCC_B2+Γ \<-> δ |  | experimental | [1] Yuan 2014; _cites Koster 1968_ | Table 4, p. 6, row 16; `ORC-FQRNG6PPEJ` |  |
| 873 | L+BCC_B2 \<-> FeSi+δ | L: Fe 0.01, Si 0, Zn 0.99 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 17; `ORC-FE5JZWA7CY` |  |
| 869 | L+BCC_B2 \<-> FeSi+δ | L: Fe 0.009, Si 0, Zn 0.991 | model | [1] Yuan 2014 | Table 4, p. 6, row 18; `ORC-JXHPHHFCYK` |  |
| 868 | L+BCC_B2 \<-> FeSi+δ |  | experimental | [1] Yuan 2014; _cites Koster 1968_ | Table 4, p. 6, row 19; `ORC-MZ5D6M6SGJ` |  |
| 827.6 | Γ + δ -> α + Γ1 |  | model | [2] Su 2005 | Table 2, p. 7, row 7; `ORC-UNFI5FQGRO` |  |
| 793 | Liq + δ -> FeSi + ζ |  | experimental | [2] Su 2005; _cites Koster 1969_ | Table 2, p. 7, row 6; `ORC-2IQKQDO2EY` |  |
| 793 | L+δ \<-> FeSi+ζ |  | experimental | [1] Yuan 2014; _cites Koster 1968_ | Table 4, p. 6, row 22; `ORC-QZGKLPEAH4` |  |
| 780 | L+δ \<-> FeSi+ζ | L: Fe 0.002, Si 0, Zn 0.998 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 20; `ORC-ARVJSSSQ6U` |  |
| 777 | L+δ \<-> FeSi+ζ | L: Fe 0.002, Si 0, Zn 0.998 | model | [1] Yuan 2014 | Table 4, p. 6, row 21; `ORC-LYU474EKXY` |  |
| 773.1 | Liq + δ -> FeSi + ζ |  | model | [2] Su 2005 | Table 2, p. 7, row 5; `ORC-6E23DJL5MY` |  |
| 693 | L \<-> FeSi+(Zn)+ζ | L: Fe 0, Si 0, Zn 1 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 23; `ORC-3BTNJCZ2KW` |  |
| 692.5 | Liq -> FeSi + ζ + Zn |  | model | [2] Su 2005 | Table 2, p. 7, row 3; `ORC-VCAZ6UU63B` |  |
| 692.2 | Liq -> FeSi + FeSi2 + Zn |  | model | [2] Su 2005 | Table 2, p. 7, row 1; `ORC-S5YM3BOMZM` |  |
| 692 | L \<-> FeSi2_L+(Zn)+(Si) | L: Fe 0, Si 0.001, Zn 0.999 | model | [1] Yuan 2014 | Table 4, p. 6, row 28; `ORC-B5JIWJYTR7` |  |
| 692 | L+FeSi \<-> FeSi2_L+(Zn) |  | experimental | [1] Yuan 2014; _cites Koster 1968_ | Table 4, p. 6, row 26; `ORC-FQPYWGTXR3` |  |
| 692 | L+FeSi \<-> FeSi2_L+(Zn) | L: Fe 0, Si 0, Zn 1 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 24; `ORC-G5LXF4YAEF` |  |
| 692 | L \<-> FeSi2_L+(Zn)+(Si) | L: Fe 0, Si 0.001, Zn 0.999 | model | [1] Yuan 2014; _cites Sha 2010_ [doi](https://doi.org/10.1016/j.calphad.2010.07.006) | Table 4, p. 6, row 27; `ORC-OZRH5AQ4MJ` |  |
| 692 | L+FeSi \<-> FeSi2_L+(Zn) | L: Fe 0, Si 0, Zn 1 | model | [1] Yuan 2014 | Table 4, p. 6, row 25; `ORC-QYPBOT3BYJ` |  |
| 690 | Liq -> FeSi + ζ + Zn |  | experimental | [2] Su 2005; _cites Koster 1969_ | Table 2, p. 7, row 4; `ORC-HUDHYCPHR2` |  |
| 690 | Liq -> FeSi + FeSi2 + Zn |  | experimental | [2] Su 2005; _cites Koster 1969_ | Table 2, p. 7, row 2; `ORC-NKCRB7A5ZW` |  |

## Sources

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

1. Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014). [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007)
2. Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005). [doi:10.1016/j.jallcom.2004.12.031](https://doi.org/10.1016/j.jallcom.2004.12.031)

## 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/).