Hf–Mn system

43 accepted literature values from 2 paper(s) (experimental 14, model 12, unspecified 17); 2 calculated phase diagram(s). 22 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 (9) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	14
model	12
unspecified	17

Accepted values by property group
Property group	Values
invariant reaction	10
phase transition	12
phase equilibrium	1
crystal structure	20

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
HfMn-12Zho.tdb	P. Zhou, S. Liu, P. Wang, H. Xu, Y. Peng, X. Yuan, Y. Du, J. Zhang, W. Huang, J. Phase Equilib. Diffus., 33, 20-28(2012). doi:10.1007/s11669-011-9976-9	`13bc2c3266d585e0795f1cb07275ad60b1fa8c1bd349e103547672c826b36065`	viewer · TDB · JSON
HfMn-24Bro.tdb	P. Broz, X. Yan, V. Romaka, O. Fabrichnaya, M.J. Kriegel, V. Bursikova, J. Bursik, J. Vrestal, G. Rogl, H. Michor, E. Bauer, M. Eiberger, A. Grytsiv, G. Giester, P.F. Rogl, J. Alloys Compd., 976, 173060(2024). doi:10.1016/j.jallcom.2023.173060	`bd5d0eb030cc8487ff192e89a933f6786eb34f71d853d2cabe123b3cae5573a1`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HfMn-12Zho.tdb	1716.15	HCP_A3 (x(Mn) 0.02181) + BCC_A2 (x(Mn) 0.08479) + LIQUID (x(Mn) 0.20797)
HfMn-12Zho.tdb	1570.7	LIQUID (x(Mn) 0.26998) + HFMN (x(Mn) 0.5) + HFMN2_C14 (x(Mn) 0.62856)
HfMn-12Zho.tdb	1524.15	HCP_A3 (x(Mn) 0.04269) + LIQUID (x(Mn) 0.24791) + HFMN (x(Mn) 0.5)
HfMn-12Zho.tdb	1524.15	HCP_A3 (x(Mn) 0.04271) + LIQUID (x(Mn) 0.24793) + HFMN (x(Mn) 0.5)
HfMn-12Zho.tdb	1481.02	HFMN2_C14 (x(Mn) 0.74567) + LIQUID (x(Mn) 0.9677) + BCC_A2 (x(Mn) 0.98464)
HfMn-12Zho.tdb	1411.49	HFMN2_C14 (x(Mn) 0.75378) + CUB_A13 (x(Mn) 0.98186) + BCC_A2 (x(Mn) 0.98822)
HfMn-12Zho.tdb	1389.46	CUB_A13 (x(Mn) 0.99579) + BCC_A2 (x(Mn) 0.99734) + FCC_A1 (x(Mn) 0.99979)
HfMn-12Zho.tdb	973.28	HFMN2_C14 (x(Mn) 0.74371) + CUB_A13 (x(Mn) 0.9981) + CBCC_A12 (x(Mn) 1)
HfMn-24Bro.tdb	1713.95	HCP_A3 (x(Mn) 0.0249) + BCC_A2 (x(Mn) 0.08907) + LIQUID (x(Mn) 0.18644)
HfMn-24Bro.tdb	1576.07	HCP_A3 (x(Mn) 0.0435) + LIQUID (x(Mn) 0.21371) + C14_LAVES (x(Mn) 0.63086)
HfMn-24Bro.tdb	1490.13	C14_LAVES (x(Mn) 0.7439) + LIQUID (x(Mn) 0.97914) + BCC_A2 (x(Mn) 0.9924)
HfMn-24Bro.tdb	1398.79	C14_LAVES (x(Mn) 0.7451) + CUB_A13 (x(Mn) 0.99233) + BCC_A2 (x(Mn) 0.99604)
HfMn-24Bro.tdb	1391.97	CUB_A13 (x(Mn) 0.99562) + BCC_A2 (x(Mn) 0.99777) + FCC_A1 (x(Mn) 0.99993)
HfMn-24Bro.tdb	986.08	C14_LAVES (x(Mn) 0.7329) + CBCC_A12 (x(Mn) 0.99817) + CUB_A13 (x(Mn) 0.99984)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull HfMn-12Zho

Invariant reactions (literature)

Invariant reactions reported in the literature for the Hf–Mn system (10)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1715.74	βHf -> L + αHf	βHf: Mn 0.0849; L: Mn 0.2185; αHf: Mn 0.0218	model	[1] Zhou 2012	Table 5, p. 8, row 1 report
1573	L + HfMn2 -> HfMn	L: Mn 0.24; HfMn2: Mn 0.62; HfMn: Mn 0.5	model	[1] Zhou 2012 cites Okamoto 1995 doi	Table 5, p. 8, row 4 report
1571.6	L + HfMn2 -> HfMn	L: Mn 0.2703; HfMn2: Mn 0.6286; HfMn: Mn 0.5	model	[1] Zhou 2012	Table 5, p. 8, row 3 report
1524.1	eutectic: L -> αHf + HfMn	L: Mn 0.2479; αHf: Mn 0.0427; HfMn: Mn 0.5	model	[1] Zhou 2012	Table 5, p. 8, row 2 report
1485	eutectic: L -> HfMn2 + δMn	L: Mn 0.96; HfMn2: Mn 0.755; δMn: Mn 0.992	model	[1] Zhou 2012 cites Okamoto 1995 doi	Table 5, p. 8, row 8 report
1481.01	eutectic: L -> HfMn2 + δMn	L: Mn 0.9677; HfMn2: Mn 0.7456; δMn: Mn 0.9846	model	[1] Zhou 2012	Table 5, p. 8, row 7 report
1413	HfMn2 + δMn -> βMn	HfMn2: Mn 0.755; δMn: Mn 0.994; βMn: Mn 0.97	model	[1] Zhou 2012 cites Okamoto 1995 doi	Table 5, p. 8, row 10 report
1411.48	HfMn2 + δMn -> βMn	HfMn2: Mn 0.7537; δMn: Mn 0.9882; βMn: Mn 0.9819	model	[1] Zhou 2012	Table 5, p. 8, row 9 report
973.27	βMn -> αMn + HfMn2	βMn: Mn 0.998; αMn: Mn 1; HfMn2: Mn 0.7437	model	[1] Zhou 2012	Table 5, p. 8, row 13 report
973	βMn -> αMn + HfMn2	βMn: Mn 0.995; αMn: Mn 0.998; HfMn2: Mn 0.74	model	[1] Zhou 2012 cites Okamoto 1995 doi	Table 5, p. 8, row 14 report

Other properties

Phase transition (12)

Phase transition, Hf–Mn system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1041.25 K	1041.25	eutectoid: Hf–Mn 6–94	experimental	[2] Brož 2024	Table 4b, p. 10, row 11 report
Phase transition	1041.55 K	1041.55	eutectoid: Hf–Mn 4–96	experimental	[2] Brož 2024	Table 4b, p. 10, row 8 report
Phase transition	1045.65 K	1045.65	eutectoid: Hf–Mn 2–98	experimental	[2] Brož 2024	Table 4b, p. 10, row 4 report
Phase transition	1412.35 K	1412.35	peritectoid: Hf–Mn 6–94	experimental	[2] Brož 2024	Table 4b, p. 10, row 12 report
Phase transition	1413.25 K	1413.25	peritectoid: Hf–Mn 4–96	experimental	[2] Brož 2024	Table 4b, p. 10, row 9 report
Phase transition	1413.35 K	1413.35	peritectoid: Hf–Mn 2–98	experimental	[2] Brož 2024	Table 4b, p. 10, row 5 report
Phase transition	1465.85 K	1465.85	eutectic: Hf–Mn 2–98	experimental	[2] Brož 2024	Table 4b, p. 10, row 6 report
Phase transition	1466.55 K	1466.55	eutectic: Hf–Mn 4–96	experimental	[2] Brož 2024	Table 4b, p. 10, row 10 report
Phase transition	1466.55 K	1466.55	eutectic: Hf–Mn 6–94	experimental	[2] Brož 2024	Table 4b, p. 10, row 13 report
Phase transition	1486.55 K	1486.55	other: Hf–Mn 2–98	experimental	[2] Brož 2024	Table 4b, p. 10, row 7 report
Phase transition	2000.16 K	2000.16	L -> HfMn2 L: Mn 0.6667; HfMn2: Mn 0.6667	model	[1] Zhou 2012	Table 5, p. 8, row 5 report
Phase transition	2003 K	2003	L -> HfMn2 L: Mn 0.667; HfMn2: Mn 0.667	model	[1] Zhou 2012 cites Okamoto 1995 doi	Table 5, p. 8, row 6 report

Phase equilibrium (1)

Phase equilibrium, Hf–Mn system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase composition		1486.55	other: 2–98 liquid: Hf 0.016, Mn 0.984	experimental	[2] Brož 2024	Table 4b, p. 10, row 1 report

Crystal structure (20)

Crystal structure, Hf–Mn system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	11.886 Å	298.15	Hf2Mn alloy: Mn 0.333333	unspecified	[2] Brož 2024	Table 1, p. 3, row 3 report
Lattice a	11.7935 Å	298.15	Hf3+xMn3-xOy	unspecified	[2] Brož 2024	Table 1, p. 3, row 5 report
Lattice a	11.812 Å	298.15	HfMn alloy: Mn 0.5	unspecified	[2] Brož 2024	Table 1, p. 3, row 4 report
Lattice a	5.01242 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 10 report
Lattice a	4.956 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 8 report
Lattice a	4.96 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 7 report
Lattice a	4.9464 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 9 report
Lattice a	5.016 Å	298.15	βHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 11 report
Lattice a	0.49849 not_printed ± 2.000e-5	300	HfMn2 alloy: Hf 0.339, Mn 0.661	experimental	[2] Brož 2024	Table 2, p. 4, row 1 report
Lattice a	5.007 Å	1730 (<)	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 6 report
Lattice a	3.1949 Å	1743 (<)	(αHf) alloy: Mn 0	unspecified	[2] Brož 2024	Table 1, p. 3, row 1 report
Lattice a	3.615 Å	1987	(βHf) alloy: Mn 0	unspecified	[2] Brož 2024	Table 1, p. 3, row 2 report
Lattice b	0.49849 not_printed ± 2.000e-5	300	HfMn2 alloy: Hf 0.339, Mn 0.661	experimental	[2] Brož 2024	Table 2, p. 4, row 1 report
Lattice c	8.23508 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 10 report
Lattice c	8.122 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 8 report
Lattice c	8.147 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 7 report
Lattice c	8.0964 Å	298.15	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 9 report
Lattice c	16.367 Å	298.15	βHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 11 report
Lattice c	0.81987 not_printed ± 2.000e-5	300	HfMn2 alloy: Hf 0.339, Mn 0.661	experimental	[2] Brož 2024	Table 2, p. 4, row 1 report
Lattice c	8.236 Å	1730 (<)	αHfMn2 alloy: Mn 0.666667	unspecified	[2] Brož 2024	Table 1, p. 3, row 6 report

Sources

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

Peng Zhou, Shuhong Liu, Peisheng Wang, Honghui Xu, Yingbiao Peng, Xiaoming Yuan et al., Experimental Investigation and Thermodynamic Assessment of the Hf-Mn System, J. Phase Equilib. Diffus. 33, 20-28 (2012). doi:10.1007/s11669-011-9976-9
Pavel Brož, Xinlin Yan, Vitaliy Romaka, Olga Fabrichnaya, Mario J. Kriegel, Vilma Buršíková et al., Constitution, physical properties and thermodynamic modeling of the Hf-Mn system, Journal of Alloys and Compounds 976, 173060 (2024). doi:10.1016/j.jallcom.2023.173060

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}
}