Ir–Zr system

24 accepted literature values from 1 paper(s) (experimental 12, model 12); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	12
model	12

Accepted values by property group
Property group	Values
invariant reaction	24

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
IrZr-06Ran-LB.tdb	H. Ran, Z. Du, J. Alloys Compd., 413, 101-5(2006). doi:10.1016/j.jallcom.2005.06.060	`3cccb56ac9c0e55c541810a4cfc249be13725ada1dd59699e03966567d3e4690`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
IrZr-06Ran-LB.tdb	2392.99	FCC_A1 (x(Zr) 0.08758) + LIQUID (x(Zr) 0.14309) + IR3ZR_L12 (x(Zr) 0.18501)
IrZr-06Ran-LB.tdb	2358.36	IR3ZR_L12 (x(Zr) 0.30176) + IR2ZR_C15 (x(Zr) 0.33333) + LIQUID (x(Zr) 0.36001)
IrZr-06Ran-LB.tdb	2142.65	IR2ZR_C15 (x(Zr) 0.33333) + LIQUID (x(Zr) 0.4208) + IRZR_B2 (x(Zr) 0.48834)
IrZr-06Ran-LB.tdb	2142.65	IR2ZR_C15 (x(Zr) 0.33333) + LIQUID (x(Zr) 0.4208) + IRZR_B2 (x(Zr) 0.48834)
IrZr-06Ran-LB.tdb	2142.65	IR2ZR_C15 (x(Zr) 0.33333) + LIQUID (x(Zr) 0.42074) + IRZR_B2 (x(Zr) 0.48832)
IrZr-06Ran-LB.tdb	2142.65	IR2ZR_C15 (x(Zr) 0.33333) + LIQUID (x(Zr) 0.42074) + IRZR_B2 (x(Zr) 0.48832)
IrZr-06Ran-LB.tdb	2003.07	IRZR_B2 (x(Zr) 0.54511) + IR3ZR5 (x(Zr) 0.625) + LIQUID (x(Zr) 0.626)
IrZr-06Ran-LB.tdb	2003.07	IRZR_B2 (x(Zr) 0.54511) + IR3ZR5 (x(Zr) 0.625) + LIQUID (x(Zr) 0.626)
IrZr-06Ran-LB.tdb	1613	IR3ZR5 (x(Zr) 0.625) + IRZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.78766)
IrZr-06Ran-LB.tdb	1613	IR3ZR5 (x(Zr) 0.625) + IRZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.78766)
IrZr-06Ran-LB.tdb	1613	IR3ZR5 (x(Zr) 0.625) + IRZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.78771)
IrZr-06Ran-LB.tdb	1578.23	IRZR2_C16 (x(Zr) 0.66667) + IRZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.79952)
IrZr-06Ran-LB.tdb	1578.23	IRZR2_C16 (x(Zr) 0.66667) + IRZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.79925)
IrZr-06Ran-LB.tdb	1578.23	IRZR2_C16 (x(Zr) 0.66667) + IRZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.79952)
IrZr-06Ran-LB.tdb	1512.6	IRZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.83904) + BCC_A2 (x(Zr) 0.93188)
IrZr-06Ran-LB.tdb	1512.6	IRZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.83909) + BCC_A2 (x(Zr) 0.93189)
IrZr-06Ran-LB.tdb	1223.02	IRZR_B2 (x(Zr) 0.50004) + IRZR_ALPHA (x(Zr) 0.50291) + IR3ZR5 (x(Zr) 0.625)
IrZr-06Ran-LB.tdb	1223.01	IRZR_B2 (x(Zr) 0.50004) + IRZR_ALPHA (x(Zr) 0.50293) + IR3ZR5 (x(Zr) 0.625)
IrZr-06Ran-LB.tdb	1223.01	IRZR_B2 (x(Zr) 0.50004) + IRZR_ALPHA (x(Zr) 0.50293) + IR3ZR5 (x(Zr) 0.625)
IrZr-06Ran-LB.tdb	1173.01	IR2ZR_C15 (x(Zr) 0.33333) + IRZR_B2 (x(Zr) 0.495) + IRZR_ALPHA (x(Zr) 0.5)
IrZr-06Ran-LB.tdb	1173.01	IR2ZR_C15 (x(Zr) 0.33333) + IRZR_B2 (x(Zr) 0.495) + IRZR_ALPHA (x(Zr) 0.5)
IrZr-06Ran-LB.tdb	1173.01	IR2ZR_C15 (x(Zr) 0.33333) + IRZR_B2 (x(Zr) 0.495) + IRZR_ALPHA (x(Zr) 0.5)
IrZr-06Ran-LB.tdb	1047.74	IRZR3 (x(Zr) 0.75) + BCC_A2 (x(Zr) 0.97964) + HCP_A3 (x(Zr) 0.992)
IrZr-06Ran-LB.tdb	1047.74	IRZR3 (x(Zr) 0.75) + BCC_A2 (x(Zr) 0.97967) + HCP_A3 (x(Zr) 0.99204)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ir–Zr system (24)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2553	congruent melting: liquid -> Ir3Zr	liquid: Zr 0.2497; Ir3Zr: Zr 0.2497	model	[1] Ran 2006	Table 2, p. 5, row 3 report
2553	congruent melting: liquid -> Ir3Zr	liquid: Zr 0.25; Ir3Zr: Zr 0.25	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 4 report
2393	eutectic: liquid -> fcc(Ir) + Ir3Zr	liquid: Zr 0.1431; fcc(Ir): Zr 0.088; Ir3Zr: Zr 0.185	model	[1] Ran 2006	Table 2, p. 5, row 1 report
2393	eutectic: liquid -> fcc(Ir) + Ir3Zr	liquid: Zr 0.13; fcc(Ir): Zr 0.07; Ir3Zr: Zr 0.19	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 2 report
2358	liquid + Ir3Zr -> Ir2Zr	liquid: Zr 0.35; Ir3Zr: Zr 0.3; Ir2Zr: Ir 0.666667, Zr 0.333333	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 6 report
2358	liquid + Ir3Zr -> Ir2Zr	liquid: Zr 0.36; Ir3Zr: Zr 0.3018; Ir2Zr: Ir 0.666667, Zr 0.333333	model	[1] Ran 2006	Table 2, p. 5, row 5 report
2323	congruent melting: liquid -> βIrZr	liquid: Zr 0.5; βIrZr: Zr 0.5	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 10 report
2323	congruent melting: liquid -> βIrZr	liquid: Zr 0.5113; βIrZr: Zr 0.5113	model	[1] Ran 2006	Table 2, p. 5, row 9 report
2143	eutectic: liquid -> Ir2Zr + βIrZr	liquid: Zr 0.42; Ir2Zr: Ir 0.666667, Zr 0.333333; βIrZr: Zr 0.47	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 8 report
2143	eutectic: liquid -> Ir2Zr + βIrZr	liquid: Zr 0.4208; Ir2Zr: Ir 0.666667, Zr 0.333333; βIrZr: Zr 0.4883	model	[1] Ran 2006	Table 2, p. 5, row 7 report
2003	liquid + βIrZr -> Ir3Zr5	liquid: Zr 0.67; βIrZr: Zr 0.52; Ir3Zr5: Ir 0.375, Zr 0.625	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 16 report
2003	liquid + βIrZr -> Ir3Zr5	liquid: Zr 0.626; βIrZr: Zr 0.5451; Ir3Zr5: Ir 0.375, Zr 0.625	model	[1] Ran 2006	Table 2, p. 5, row 15 report
1613	liquid + Ir3Zr5 -> IrZr2	liquid: Zr 0.7877; Ir3Zr5: Ir 0.375, Zr 0.625; IrZr2: Ir 0.333333, Zr 0.666667	model	[1] Ran 2006	Table 2, p. 5, row 17 report
1613	liquid + Ir3Zr5 -> IrZr2	liquid: Zr 0.73; Ir3Zr5: Ir 0.375, Zr 0.625; IrZr2: Ir 0.333333, Zr 0.666667	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 18 report
1578	liquid + IrZr2 -> IrZr3	liquid: Zr 0.77; IrZr2: Ir 0.333333, Zr 0.666667; IrZr3: Ir 0.25, Zr 0.75	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 20 report
1578	liquid + IrZr2 -> IrZr3	liquid: Zr 0.7995; IrZr2: Ir 0.333333, Zr 0.666667; IrZr3: Ir 0.25, Zr 0.75	model	[1] Ran 2006	Table 2, p. 5, row 19 report
1513	eutectic: liquid -> IrZr3 + bcc(Zr)	liquid: Zr 0.82; IrZr3: Ir 0.25, Zr 0.75; bcc(Zr): Zr 0.95	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 22 report
1513	eutectic: liquid -> IrZr3 + bcc(Zr)	liquid: Zr 0.8391; IrZr3: Ir 0.25, Zr 0.75; bcc(Zr): Zr 0.9319	model	[1] Ran 2006	Table 2, p. 5, row 21 report
1223	βIrZr + Ir3Zr5 -> αIrZr	βIrZr: Zr 0.5; Ir3Zr5: Ir 0.375, Zr 0.625; αIrZr: Zr 0.5029	model	[1] Ran 2006	Table 2, p. 5, row 13 report
1223	βIrZr + Ir3Zr5 -> αIrZr	βIrZr: Zr 0.5; Ir3Zr5: Ir 0.375, Zr 0.625; αIrZr: Zr 0.51	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 14 report
1173	βIrZr -> Ir2Zr + αIrZr	βIrZr: Zr 0.495; Ir2Zr: Ir 0.666667, Zr 0.333333; αIrZr: Zr 0.5	model	[1] Ran 2006	Table 2, p. 5, row 11 report
1173	βIrZr -> Ir2Zr + αIrZr	βIrZr: Zr 0.49; Ir2Zr: Ir 0.666667, Zr 0.333333; αIrZr: Zr 0.5	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 12 report
1048	bcc(Zr) -> IrZr3 + hcp(Zr)	bcc(Zr): Zr 0.97; IrZr3: Ir 0.25, Zr 0.75; hcp(Zr): Zr 0.99	experimental	[1] Ran 2006 cites Eremenko 1980	Table 2, p. 5, row 24 report
1048	bcc(Zr) -> IrZr3 + hcp(Zr)	bcc(Zr): Zr 0.9797; IrZr3: Ir 0.25, Zr 0.75; hcp(Zr): Zr 0.992	model	[1] Ran 2006	Table 2, p. 5, row 23 report

Sources

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

Hongtao Ran, Zhenmin Du, Thermodynamic assessment of the Ir–Zr system, Journal of Alloys and Compounds 413, 101-105 (2006). doi:10.1016/j.jallcom.2005.06.060

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}
}