Dy–Fe system

55 accepted literature values from 1 paper(s) (experimental 9, model 46); 3 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	9
model	46

Accepted values by property group
Property group	Values
invariant reaction	41
phase transition	14

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
DyFe-17Ron.tdb	M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017). doi:10.1016/j.calphad.2017.10.003	`47f67b915e3458af762d6e59242cedf2fad1965f9fed130e70956ee832353121`	viewer · TDB · JSON
DyFe-23Ye.tdb	H. Ye, M. Rong, Q. Chen, Q. Yao, J. Wang, G. Rao, H. Zhou, J. Mater. Inf., 3, 15(2023).	`446e3c96918b3acfc1368c0f3896c0b09d97a561e0c5e2c81a35438abc028956`	viewer · TDB · JSON
DyFe-94Lan.tdb	S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994). doi:10.1016/0925-8388(94)90261-5	`80fb2d986f6fc865972f30a0e926a131eb099062f0cd1eb4efe8efd401355e31`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
DyFe-17Ron.tdb	1663.38	LIQUID (x(Fe) 0.9429) + BCC_A2 (x(Fe) 0.99948) + FCC_A1 (x(Fe) 0.99963)
DyFe-17Ron.tdb	1652.13	HCP_A3 (x(Fe) 0) + BCC_A2 (x(Fe) 4.100e-4) + LIQUID (x(Fe) 0.01588)
DyFe-17Ron.tdb	1652.13	HCP_A3 (x(Fe) 0) + BCC_A2 (x(Fe) 4.100e-4) + LIQUID (x(Fe) 0.0159)
DyFe-17Ron.tdb	1614.81	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.9267) + FCC_A1 (x(Fe) 0.9995)
DyFe-17Ron.tdb	1614.81	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.92677) + FCC_A1 (x(Fe) 0.9995)
DyFe-17Ron.tdb	1553.42	DYFE3 (x(Fe) 0.75) + LIQUID (x(Fe) 0.79228) + DY6FE23_D8A (x(Fe) 0.7931)
DyFe-17Ron.tdb	1553.42	DYFE3 (x(Fe) 0.75) + LIQUID (x(Fe) 0.79219) + DY6FE23_D8A (x(Fe) 0.7931)
DyFe-17Ron.tdb	1553.39	DY6FE23_D8A (x(Fe) 0.7931) + LIQUID (x(Fe) 0.79561) + DY2FE17 (x(Fe) 0.89474)
DyFe-17Ron.tdb	1553.39	DY6FE23_D8A (x(Fe) 0.7931) + LIQUID (x(Fe) 0.7957) + DY2FE17 (x(Fe) 0.89474)
DyFe-17Ron.tdb	1536.76	DYFE2_C15 (x(Fe) 0.66667) + LIQUID (x(Fe) 0.6716) + DYFE3 (x(Fe) 0.75)
DyFe-17Ron.tdb	1184.83	DY2FE17 (x(Fe) 0.89474) + FCC_A1 (x(Fe) 0.99999) + BCC_A2 (x(Fe) 0.99999)
DyFe-17Ron.tdb	1158.95	HCP_A3 (x(Fe) 0) + LIQUID (x(Fe) 0.31717) + DYFE2_C15 (x(Fe) 0.66667)
DyFe-17Ron.tdb	1158.95	HCP_A3 (x(Fe) 0) + LIQUID (x(Fe) 0.31721) + DYFE2_C15 (x(Fe) 0.66667)
DyFe-23Ye.tdb	1678.73	HCP_A3 (x(Fe) 0) + LIQUID (x(Fe) 0) + BCC_A2 (x(Fe) 0)
DyFe-23Ye.tdb	1664.18	LIQUID (x(Fe) 0.94518) + BCC_A2 (x(Fe) 0.99958) + FCC_A1 (x(Fe) 0.9997)
DyFe-23Ye.tdb	1657.43	HCP_A3 (x(Fe) 0) + BCC_A2 (x(Fe) 2.700e-4) + LIQUID (x(Fe) 0.01206)
DyFe-23Ye.tdb	1626.69	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.93317) + FCC_A1 (x(Fe) 0.99961)
DyFe-23Ye.tdb	1626.69	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.93325) + FCC_A1 (x(Fe) 0.99962)
DyFe-23Ye.tdb	1562.99	LIQUID (x(Fe) 0.79308) + DY6FE23_D8A (x(Fe) 0.7931) + DY2FE17 (x(Fe) 0.89474)
DyFe-23Ye.tdb	1562.96	DYFE3 (x(Fe) 0.75) + LIQUID (x(Fe) 0.79113) + DY6FE23_D8A (x(Fe) 0.7931)
DyFe-23Ye.tdb	1542.99	DYFE2_C15 (x(Fe) 0.66667) + LIQUID (x(Fe) 0.66727) + DYFE3 (x(Fe) 0.75)
DyFe-23Ye.tdb	1542.98	DYFE2_C15 (x(Fe) 0.66667) + LIQUID (x(Fe) 0.66694) + DYFE3 (x(Fe) 0.75)
DyFe-23Ye.tdb	1184.83	DY2FE17 (x(Fe) 0.89474) + BCC_A2 (x(Fe) 0.99999) + FCC_A1 (x(Fe) 0.99999)
DyFe-23Ye.tdb	1157.38	HCP_A3 (x(Fe) 0) + LIQUID (x(Fe) 0.29995) + DYFE2_C15 (x(Fe) 0.66667)
DyFe-23Ye.tdb	1157.38	HCP_A3 (x(Fe) 0) + LIQUID (x(Fe) 0.29993) + DYFE2_C15 (x(Fe) 0.66667)
DyFe-94Lan.tdb	1660.63	LIQUID (x(Fe) 0.92591) + BCC_A2 (x(Fe) 0.99913) + FCC_A1 (x(Fe) 0.99938)
DyFe-94Lan.tdb	1658.77	HCP_A3 (x(Fe) 9.000e-5) + BCC_A2 (x(Fe) 1.300e-4) + LIQUID (x(Fe) 0.01165)
DyFe-94Lan.tdb	1658.77	HCP_A3 (x(Fe) 9.000e-5) + BCC_A2 (x(Fe) 1.300e-4) + LIQUID (x(Fe) 0.01165)
DyFe-94Lan.tdb	1641.96	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.91642) + FCC_A1 (x(Fe) 0.99931)
DyFe-94Lan.tdb	1641.96	DY2FE17 (x(Fe) 0.89474) + LIQUID (x(Fe) 0.91653) + FCC_A1 (x(Fe) 0.99931)
DyFe-94Lan.tdb	1581.52	DYFE3 (x(Fe) 0.75) + LIQUID (x(Fe) 0.77589) + DY2FE17 (x(Fe) 0.89474)
DyFe-94Lan.tdb	1581.52	DYFE3 (x(Fe) 0.75) + LIQUID (x(Fe) 0.77557) + DY2FE17 (x(Fe) 0.89474)
DyFe-94Lan.tdb	1560.34	DYFE3 (x(Fe) 0.75) + DY6FE23_D8A (x(Fe) 0.7931) + DY2FE17 (x(Fe) 0.89474)
DyFe-94Lan.tdb	1541.98	LIQUID (x(Fe) 0.63666) + DYFE2_C15 (x(Fe) 0.66667) + DYFE3 (x(Fe) 0.75)
DyFe-94Lan.tdb	1541.98	LIQUID (x(Fe) 0.63725) + DYFE2_C15 (x(Fe) 0.66667) + DYFE3 (x(Fe) 0.75)
DyFe-94Lan.tdb	1184.86	DY2FE17 (x(Fe) 0.89474) + BCC_A2 (x(Fe) 0.99998) + FCC_A1 (x(Fe) 0.99998)
DyFe-94Lan.tdb	1161.36	HCP_A3 (x(Fe) 0.00101) + LIQUID (x(Fe) 0.28474) + DYFE2_C15 (x(Fe) 0.66667)
DyFe-94Lan.tdb	1161.36	HCP_A3 (x(Fe) 0.00101) + LIQUID (x(Fe) 0.28487) + DYFE2_C15 (x(Fe) 0.66667)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull DyFe-17Ron · CALPHAD hull DyFe-94Lan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Dy–Fe system (41)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1667.9	metatectic/catatectic: bcc(δ-Fe) -> fcc(γ-Fe) + L	L: Fe 0.93	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 2 report
1667.5	metatectic/catatectic: bcc(δ-Fe) -> fcc(γ-Fe) + L	L: Fe 0.94	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 3 report
1664	metatectic/catatectic: bcc(δ-Fe) -> fcc(γ-Fe) + L	L: Fe 0.945	model	[1] Ye 2023	Table 7, p. 13, row 5 report
1663	metatectic/catatectic: bcc(δ-Fe) -> fcc(γ-Fe) + L	L: Fe 0.915	experimental	[1] Ye 2023 cites ref. 99	Table 7, p. 13, row 1 report
1662	metatectic/catatectic: bcc(δ-Fe) -> fcc(γ-Fe) + L	L: Fe 0.94	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 4 report
1641.7	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.917	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 12 report
1639	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)		model	[1] Ye 2023 cites ref. 83	Table 7, p. 13, row 14 report
1638	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.926	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 15 report
1634	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.92	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 16 report
1633	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.91	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 11 report
1630.7	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.922	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 13 report
1630	eutectic: L -> Fe17Dy2 + fcc(γ-Fe)	L: Fe 0.934	model	[1] Ye 2023	Table 7, p. 13, row 17 report
1574	peritectic: L + Fe17Dy2 -> Fe23Dy6	L: Fe 0.79	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 27 report
1573	eutectic: L -> Fe23Dy6 + Fe3Dy	L: Fe 0.785	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 32 report
1567.4	peritectic: L + Fe17Dy2 -> Fe23Dy6	L: Fe 0.791	model	[1] Ye 2023	Table 7, p. 13, row 29 report
1567.3	eutectic: L -> Fe23Dy6 + Fe3Dy	L: Fe 0.788	model	[1] Ye 2023	Table 7, p. 13, row 34 report
1565	peritectic: L + Fe17Dy2 -> Fe23Dy6	L: Fe 0.788	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 28 report
1563	peritectic: L + Fe17Dy2 -> Fe23Dy6	L: Fe 0.788	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 25 report
1561.9	peritectic: L + Fe17Dy2 -> Fe23Dy6	L: Fe 0.782	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 26 report
1561	eutectic: L -> Fe23Dy6 + Fe3Dy	L: Fe 0.775	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 31 report
1558	eutectic: L -> Fe23Dy6 + Fe3Dy	L: Fe 0.775	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 30 report
1557	eutectic: L -> Fe23Dy6 + Fe3Dy	L: Fe 0.779	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 33 report
1548	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.661	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 46 report
1547	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.61	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 47 report
1545.5	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.665	model	[1] Ye 2023	Table 7, p. 13, row 48 report
1545	peritectic: L + Fe3Dy -> Fe2Dy		model	[1] Ye 2023 cites ref. 83	Table 7, p. 13, row 45 report
1543	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.599	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 42 report
1542.9	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.637	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 43 report
1535.9	peritectic: L + Fe3Dy -> Fe2Dy	L: Fe 0.665	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 44 report
1185	peritectoid: Fe17Dy2 + fcc(γ-Fe) -> bcc(α-Fe)		model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 9 report
1184.8	peritectoid: Fe17Dy2 + fcc(γ-Fe) -> bcc(α-Fe)		model	[1] Ye 2023	Table 7, p. 13, row 10 report
1184.8	peritectoid: Fe17Dy2 + fcc(γ-Fe) -> bcc(α-Fe)		model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 8 report
1184.8	peritectoid: Fe17Dy2 + fcc(γ-Fe) -> bcc(α-Fe)		model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 7 report
1183	peritectoid: Fe17Dy2 + fcc(γ-Fe) -> bcc(α-Fe)		experimental	[1] Ye 2023 cites ref. 99	Table 7, p. 13, row 6 report
1165.3	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.283	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 51 report
1164	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.27	model	[1] Ye 2023 cites ref. 83	Table 7, p. 13, row 52 report
1163	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.285	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 49 report
1162.1	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.284	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 50 report
1161	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.309	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 53 report
1161	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.29	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 54 report
1160	eutectic: L -> Fe2Dy + hcp-Dy	L: Fe 0.304	model	[1] Ye 2023	Table 7, p. 13, row 55 report

Other properties

Phase transition (14)

Phase transition, Dy–Fe system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1563.5 K	1563.5	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 37 report
Phase transition	1576.4 K	1576.4	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023	Table 7, p. 13, row 41 report
Phase transition	1578 K	1578	congruent melting: L -> Fe3Dy L: Fe 0.75	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 35 report
Phase transition	1579 K	1579	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 40 report
Phase transition	1580 K	1580	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 39 report
Phase transition	1580 K	1580	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023 cites ref. 83	Table 7, p. 13, row 38 report
Phase transition	1581.8 K	1581.8	congruent melting: L -> Fe3Dy L: Fe 0.75	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 36 report
Phase transition	1637.5 K	1637.5	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023 cites ref. 105	Table 7, p. 13, row 20 report
Phase transition	1640 K	1640	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023 cites ref. 83	Table 7, p. 13, row 21 report
Phase transition	1644.8 K	1644.8	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023 cites ref. 104	Table 7, p. 13, row 19 report
Phase transition	1647 K	1647	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023 cites ref. 27	Table 7, p. 13, row 23 report
Phase transition	1648 K	1648	congruent melting: L -> Fe17Dy2 L: Fe 0.895	experimental	[1] Ye 2023 cites ref. 96	Table 7, p. 13, row 18 report
Phase transition	1649 K	1649	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023 cites (cal	Table 7, p. 13, row 22 report
Phase transition	1651 K	1651	congruent melting: L -> Fe17Dy2 L: Fe 0.895	model	[1] Ye 2023	Table 7, p. 13, row 24 report

Sources

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

Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023). doi:10.20517/jmi.2023.08

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}
}