Cr–Zn system

28 accepted literature values from 3 paper(s) (experimental 20, model 8); 3 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (6) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	20
model	8

Accepted values by property group
Property group	Values
invariant reaction	18
phase transition	2
phase equilibrium	8

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.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
CrZn-03Reu-LB.tdb	G. Reumont, P. Perrot, J. Phase Equilib., 24, 50-54(2003). doi:10.1007/s11669-003-0006-4	`a1b249392f3b86f074a91ec7a8fb040f8e7012cbc10bcb5f2785c8cbe2d038f9`	viewer · TDB · JSON
CrZn-10Su.tdb	X. Su, Y. Liu, D.Y.H. Liu, J.-C. Tedenac, F. Yin, J. Wang, J. Alloys Compd., 496, 159-63(2010). doi:10.1016/j.jallcom.2010.02.087	`132759fcba46e488477c83338c1778991e90c75c10a5755d55c72f9427a79d78`	viewer · TDB · JSON
CrZn-98Ans.tdb	I. Ansara, COST 507, Final report round 2, 1998.	`1d3d06ce513339db7e817ebce0de710dee11690a6709dda938f1e5052d7ebcba`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CrZn-03Reu-LB.tdb	753.49	BCC_A2 (x(Zn) 5.000e-5) + CRZN13 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.96352)
CrZn-03Reu-LB.tdb	753.49	BCC_A2 (x(Zn) 5.000e-5) + CRZN13 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.96345)
CrZn-03Reu-LB.tdb	753.49	BCC_A2 (x(Zn) 5.000e-5) + CRZN13 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.96345)
CrZn-03Reu-LB.tdb	735.32	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.98416)
CrZn-03Reu-LB.tdb	735.32	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.9843)
CrZn-03Reu-LB.tdb	735.32	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.98412)
CrZn-03Reu-LB.tdb	735.32	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.9843)
CrZn-03Reu-LB.tdb	691.46	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.9977) + HCP_A3 (x(Zn) 1)
CrZn-03Reu-LB.tdb	691.46	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99775) + HCP_A3 (x(Zn) 1)
CrZn-03Reu-LB.tdb	691.46	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99776) + HCP_A3 (x(Zn) 1)
CrZn-10Su.tdb	736.12	BCC_A2 (x(Zn) 0.02062) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99844)
CrZn-10Su.tdb	736.12	BCC_A2 (x(Zn) 0.02061) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99843)
CrZn-10Su.tdb	692.56	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99978) + HCP_A3 (x(Zn) 1)
CrZn-10Su.tdb	692.56	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99978) + HCP_A3 (x(Zn) 1)
CrZn-98Ans.tdb	761.42	BCC_A2 (x(Zn) 5.000e-5) + CRZN13 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.99632)
CrZn-98Ans.tdb	761.42	BCC_A2 (x(Zn) 5.000e-5) + CRZN13 (x(Zn) 0.92857) + LIQUID (x(Zn) 0.99632)
CrZn-98Ans.tdb	736.52	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99842)
CrZn-98Ans.tdb	736.52	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99841)
CrZn-98Ans.tdb	736.52	CRZN13 (x(Zn) 0.92857) + CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99842)
CrZn-98Ans.tdb	692.55	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99977) + HCP_A3 (x(Zn) 1)
CrZn-98Ans.tdb	692.55	CRZN17 (x(Zn) 0.94444) + LIQUID (x(Zn) 0.99977) + HCP_A3 (x(Zn) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CrZn-03Reu-LB · CALPHAD hull CrZn-98Ans

Invariant reactions (literature)

Invariant reactions reported in the literature for the Cr–Zn system (18)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
761.4	peritectic: Liquid + bcc-A2 -> CrZn13*	L: Zn 0.996; bcc-A2: Zn 0; CrZn13: Zn 0.928	model	[1] (ed.) 1998	Table I, p. 175, row 1 report
754	peritectic: L + bcc_A2 -> CrZn13	L: Zn 0.9628; bcc_A2: Zn 0; CrZn13: Zn 0.928	model	[2] Reumont 2003	Table 2, p. 4, row 1 report
753.15	L + bcc_A2 -> CrZn13	CrZn13: Zn 0.928571	experimental	[2] Reumont 2003	Table 1, p. 3, row 2 report
737.15	peritectic		experimental	[2] Reumont 2003	p. 1 report	The peritectic transformation of CrZn17 occurs at 464 °C, whereas the temperature of decomposition of CrZn13 is unknown experimentally.
737	peritectic: L + CrZn13 -> CrZn17	CrZn13: Zn 0.928571; CrZn17: Zn 0.944444	experimental	[2] Reumont 2003	Table 2, p. 4, row 3 report
737	L + (Cr) -> CrZn17	L: Zn 0.988; CrZn17: Zn 0.944444	experimental	[3] Su 2010 cites Heumann 1948 doi	Table 5, p. 4, row 4 report
736.9	L + (Cr) -> CrZn17	L: Zn 0.9984; CrZn17: Zn 0.944444	model	[3] Su 2010	Table 5, p. 4, row 3 report
736.5	peritectic: Liquid + CrZn13 -> CrZn17	L: Zn 0.998; CrZn13: Zn 0.928; CrZn17: Zn 0.944	model	[1] (ed.) 1998	Table I, p. 175, row 2 report
736	peritectic: L + CrZn13 -> CrZn17	L: Zn 0.9851; CrZn13: Zn 0.928; CrZn17: Zn 0.9444	model	[2] Reumont 2003	Table 2, p. 4, row 2 report
735.15	L + CrZn13 -> CrZn17 °C	CrZn13: Zn 0.928571; CrZn17: Zn 0.944444	experimental	[2] Reumont 2003	Table 1, p. 3, row 1 report
692.6	eutectic: L -> (hcp(Zn)) + CrZn17	L: Zn 0.9998; CrZn17: Zn 0.944444	model	[3] Su 2010	Table 5, p. 4, row 1 report
692.5	other: Liquid -> CrZn17 + hcp-Zn	L: Zn 0.999; CrZn17: Zn 0.944; hcp-Zn: Zn 0.999	model	[1] (ed.) 1998	Table I, p. 175, row 3 report
691.15	eutectic		experimental	[2] Reumont 2003 cites Weiss 1942	p. 1 report	However, [1942Wei] proposed a Guy Reumont and Pierre Perrot, LMPGM, UMR CNRS 8517, Université de Lille I, Villeneuve d'Ascq, France. Contact e-mail: [email protected]. eutectic temperature at 418 °C and estimated the Cr content in the liquid phase as 0.31 at.% Cr at that temperature.
691	eutectic: L -> CrZn17 + hcp_A3	L: Zn 0.998; CrZn17: Zn 0.9444; hcp_A3: Zn 0.9999	model	[2] Reumont 2003	Table 2, p. 4, row 4 report
688.15	eutectic		experimental	[2] Reumont 2003 cites Heumann 1948	p. 1 report	According to [1948Heu], at the eutectic temperature (415 °C), the maximum solubility of Cr in solid Zn closepacked hexagonal (cph) solution is very low and was accepted as 0.04 at.% Cr.
688.15	eutectic: L → hcp(Zn) + CrZn17		experimental	[3] Su 2010 cites Heumann 1948	p. 2 report	The eutectic reaction L → hcp(Zn) + CrZn17 occurred at 415 ◦ C according to the results of Heumann [9].
688	eutectic: L -> (hcp(Zn)) + CrZn17	L: Zn 0.9997; CrZn17: Zn 0.944444	experimental	[3] Su 2010 cites Heumann 1948 doi	Table 5, p. 4, row 2 report
688	eutectic: L -> CrZn17 + hcp_A3	CrZn17: Zn 0.944444	experimental	[2] Reumont 2003	Table 2, p. 4, row 5 report

Other properties

Phase transition (2)

Phase transition, Cr–Zn system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	723.15 K	723.15	Solubility in the liquid phase L: Zn 0.99	experimental	[2] Reumont 2003	Table 1, p. 3, row 4 report
Phase transition	733.15 K	733.15	Solubility in the liquid phase L: Zn 0.987	experimental	[2] Reumont 2003	Table 1, p. 3, row 5 report

Phase equilibrium (8)

Phase equilibrium, Cr–Zn system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	653.15	Zn + CrZn17 Zn: Cr 0, Zn 1; CrZn17: Cr 0.058, Zn 0.942	experimental	[3] Su 2010	Table 3, p. 3, row 1 report
Phase composition	703.15	(Cr) + CrZn17 (Cr): Cr 0.993, Zn 0.007; CrZn17: Cr 0.063, Zn 0.937	experimental	[3] Su 2010	Table 3, p. 3, row 3 report
Phase composition	703.15	Zn + CrZn17 Zn: Cr 0.009, Zn 0.991; CrZn17: Cr 0.061, Zn 0.939	experimental	[3] Su 2010	Table 3, p. 3, row 2 report
Phase composition	973.15	β-Cr + Liquid β-Cr: Cr 0.972, Zn 0.028; Liquid: Cr 0.011, Zn 0.989	experimental	[3] Su 2010	Table 2, p. 2, row 1 report
Phase composition	1073.15	β-Cr + Liquid β-Cr: Cr 0.985, Zn 0.015; Liquid: Cr 0.02, Zn 0.98	experimental	[3] Su 2010	Table 2, p. 2, row 2 report
Phase composition	1173.15	β-Cr + Liquid β-Cr: Cr 0.992, Zn 0.008; Liquid: Cr 0.018, Zn 0.982	experimental	[3] Su 2010	Table 2, p. 2, row 3 report
Phase composition	1273.15	Liquid Liquid: Cr 0.04, Zn 0.96	experimental	[3] Su 2010	Table 2, p. 2, row 4 report
Phase composition	1373.15	β-Cr + Liquid β-Cr: Cr 0.992, Zn 0.008; Liquid: Cr 0.096, Zn 0.904	experimental	[3] Su 2010	Table 2, p. 2, row 5 report

Sources

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

I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). doi:10.1007/s11669-003-0006-4
Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). doi:10.1016/j.jallcom.2010.02.087

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi: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.

@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_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_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}