# Fe–Nb system

> Fe–Nb system: 115 accepted literature values (invariant reaction 96, formation 9, heat capacity / entropy / enthalpy 4, phase transition 4) and 16 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

115 accepted literature values from 5 paper(s) (experimental 55, model 60); 16 calculated phase diagram(s). 14 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/FE-NB.json) · [CSV](https://data.orchid-project.org/systems/FE-NB.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#FE-NB) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-00Tof.json) · [phases (7)](https://data.orchid-project.org/phases/pages/FE-NB.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/FE-NB.html) · [Markdown](https://data.orchid-project.org/systems/FE-NB.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 55 |
| model | 60 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 96 |
| phase transition | 4 |
| formation | 9 |
| mixing / partial | 2 |
| heat capacity / entropy / enthalpy | 4 |

## 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.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| FeNb-00Tof.tdb | C. Toffolon, C. Servant, Calphad, 24, 97-112(2000). [doi:10.1016/S0364-5916(00)00017-1](https://doi.org/10.1016/S0364-5916%2800%2900017-1) | `8db1f9ea72128212bd714adcc3fab1e9340a7fbb59666f51600f2e77a9971c72` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-00Tof.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-00Tof.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-00Tof.json) |
| FeNb-01Lee.tdb | B.-J. Lee, Metall. Mater. Trans. A, 32A, 2423-39(2001). [doi:10.1007/s11661-001-0033-x](https://doi.org/10.1007/s11661-001-0033-x) | `be8d18ef407a320af9f25de76ac6d431c2c2deb5f3043817926059a5face6621` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-01Lee.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-01Lee.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-01Lee.json) |
| FeNb-08Yos.tdb | K. Yoshitomi, Y. Nakama, H. Ohtani, M. Hasebe, ISIJ Int., 48, 835-44(2008). [doi:10.2355/isijinternational.48.835](https://doi.org/10.2355/isijinternational.48.835) | `d9c17bfc623833e3fde5204c8efc0d2e4fe5a7f0699f4979e19b49647951f429` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-08Yos.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-08Yos.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-08Yos.json) |
| FeNb-09Mat.tdb | M. Mathon, D. Connetable, B. Sundman, J. Lacaze, Calphad, 33, 136-61(2009). [doi:10.1016/j.calphad.2008.10.005](https://doi.org/10.1016/j.calphad.2008.10.005) | `bfbae9043c6ef6b6f2398d47471a0762e3b8bb802802f017fb32add380167ba7` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-09Mat.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-09Mat.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-09Mat.json) |
| FeNb-12Khv.tdb | A.V. Khvan, B. Hallstedt, Calphad, 39, 62-69(2012). [doi:10.1016/j.calphad.2012.09.001](https://doi.org/10.1016/j.calphad.2012.09.001) | `1a30e08ced98f20f005286960c3d5bbbdb8e4bbf7126314559d92e247ccd66ad` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-12Khv.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-12Khv.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-12Khv.json) |
| FeNb-12Liu.tdb | S. Liu, B. Hallstedt, D. Music, Y. Du, Calphad, 38, 43-58(2012). [doi:10.1016/j.calphad.2012.03.004](https://doi.org/10.1016/j.calphad.2012.03.004) | `fd5ee7f090c38e04af5b367c63ec73ec902d2dd70a3189a2cf51bc416bb9e3cb` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-12Liu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-12Liu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-12Liu.json) |
| FeNb-13Khv.tdb | A.V. Khvan, B. Hallstedt, Calphad, 40, 10-15(2013). [doi:10.1016/j.calphad.2012.11.001](https://doi.org/10.1016/j.calphad.2012.11.001) | `fb96ec3d863b310a3bc11e0175ec3abb92505878399b9035334ccc6c68a1af66` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-13Khv.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-13Khv.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-13Khv.json) |
| FeNb-15Mie.tdb | J. Miettinen, G. Vassilev, J. Phase Equilib. Diffus., 36, 68-77(2015). [doi:10.1007/s11669-014-0351-5](https://doi.org/10.1007/s11669-014-0351-5) | `ee2b30b1debd39dfcb5cefa20f9c13457d1c7075367e9d952097e21c549e2940` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-15Mie.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-15Mie.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-15Mie.json) |
| FeNb-16Jac.tdb | A. Jacob, C. Schmetterer, A. Khvan, A. Kondratiev, D. Ivanov, B. Hallstedt, Calphad, 54, 1-15(2016). [doi:10.1016/j.calphad.2016.04.013](https://doi.org/10.1016/j.calphad.2016.04.013) | `af8ab6c509d52d57eceee3a8e1ac329a830ad73b02e9982bc28845cdd4ca98eb` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-16Jac.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-16Jac.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-16Jac.json) |
| FeNb-17He.tdb | C. He, Y. Qin, F. Stein, J. Phase Equilib. Diffus., 38, 771-87(2017). [doi:10.1007/s11669-017-0566-3](https://doi.org/10.1007/s11669-017-0566-3) | `76ab0f6b57cfc83d5a7b425cfd120d2b4428c3e33ea2de51d08650f4aa8b3bbc` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-17He.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-17He.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-17He.json) |
| FeNb-17Lu.tdb | H.-J. Lu, N. Zou, X.-S. Zhao, J.-Y. Shen, X.-G. Lu, Y.-L. He, Intermetallics, 88, 91-100(2017). [doi:10.1016/j.intermet.2017.05.008](https://doi.org/10.1016/j.intermet.2017.05.008) | `a0fac59acd402a2e11c6b113927d8288b16b533df21a87c8bf8dbb971a68b196` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-17Lu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-17Lu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-17Lu.json) |
| FeNb-21Laf.tdb | P. Lafaye, C. Toffolon-Masclet, J.-C. Crivello, J.-M. Joubert, J. Nucl. Mater., 544, 152692(2021). [doi:10.1016/j.jnucmat.2020.152692](https://doi.org/10.1016/j.jnucmat.2020.152692) | `4863d0381c0ee107639dd7d8ac2e219412dad09ebeb157118e18d5256e8c634f` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-21Laf.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-21Laf.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-21Laf.json) |
| FeNb-23Pan.tdb | Q. Pan, W. Liu, T. Wu, W. Zheng, J. Wang, X.-G. Lu, Calphad, 80, 102529(2023). [doi:10.1016/j.calphad.2023.102529](https://doi.org/10.1016/j.calphad.2023.102529) | `7a7d73baed07c73bf7bf1068fa8c134a2992065aebe83f97716bbaaff3e396c9` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-23Pan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-23Pan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-23Pan.json) |
| FeNb-24Sun.tdb | H. Sun, C. Wang, S.-L. Shang, A.M. Beese, J.-C. Zhao, Z.-K. Liu, Acta Mater., 268, 119747(2024). [doi:10.1016/j.actamat.2024.119747](https://doi.org/10.1016/j.actamat.2024.119747) | `fd8244df2b5988c71196757bd1821ccf7914bcc95dcaec83efaf7792d2d077ee` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-24Sun.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-24Sun.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-24Sun.json) |
| FeNb-90Hua-LB.tdb | W. Huang, Z. Metallkd., 81, 397-404(1990). [doi:10.1515/ijmr-1990-810602](https://doi.org/10.1515/ijmr-1990-810602) | `fb4b807d35e4fed62d97ec82f3186c50e9a1bbcb73ad825c05fd65da7ce6eca9` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-90Hua-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-90Hua-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-90Hua-LB.json) |
| FeNb-94Coe.tdb | G.C. Coelho, S.G. Fries, H.L. Lukas, P. Majewski, J.M. Zelaya Bejarano, S. Gama, C.A. Ribeiro, G. Effenberg, Materials Week 93, TMS, Pittsburgh, 1994, pp. 51-70. | `036b7ea8790b1c60534e5fceee20dc922c119a5701ec0cd580961889e6014db7` | [viewer](https://orchid-project.org/phase-diagrams/#FE-NB/FeNb-94Coe.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeNb-94Coe.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeNb-94Coe.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| FeNb-00Tof.tdb | 1793.23 | C14_LAVES (x(Nb) 0.35047) + MU_D85 (x(Nb) 0.48338) + LIQUID (x(Nb) 0.51519) |
| FeNb-00Tof.tdb | 1757.91 | MU_D85 (x(Nb) 0.49373) + LIQUID (x(Nb) 0.59261) + BCC_A2 (x(Nb) 0.92292) |
| FeNb-00Tof.tdb | 1667.46 | BCC_A2 (x(Nb) 0.03123) + LIQUID (x(Nb) 0.0965) + C14_LAVES (x(Nb) 0.30521) |
| FeNb-00Tof.tdb | 1472.2 | FCC_A1 (x(Nb) 0.01154) + BCC_A2 (x(Nb) 0.01624) + C14_LAVES (x(Nb) 0.3082) |
| FeNb-00Tof.tdb | 1215.25 | FCC_A1 (x(Nb) 0.00259) + BCC_A2 (x(Nb) 0.00478) + C14_LAVES (x(Nb) 0.31478) |
| FeNb-01Lee.tdb | 1865.82 | C14_LAVES (x(Nb) 0.34877) + LIQUID (x(Nb) 0.38653) + MU_D85 (x(Nb) 0.45771) |
| FeNb-01Lee.tdb | 1667.84 | MU_D85 (x(Nb) 0.46143) + LIQUID (x(Nb) 0.66336) + BCC_A2 (x(Nb) 0.90937) |
| FeNb-01Lee.tdb | 1653.31 | BCC_A2 (x(Nb) 0.02533) + LIQUID (x(Nb) 0.10065) + C14_LAVES (x(Nb) 0.32042) |
| FeNb-01Lee.tdb | 1459.81 | FCC_A1 (x(Nb) 0.00972) + BCC_A2 (x(Nb) 0.01556) + C14_LAVES (x(Nb) 0.32507) |
| FeNb-01Lee.tdb | 1227.66 | FCC_A1 (x(Nb) 0.004) + BCC_A2 (x(Nb) 0.00705) + C14_LAVES (x(Nb) 0.32952) |
| FeNb-08Yos.tdb | 1791.27 | FE2NB_C14 (x(Nb) 0.35409) + MU_D85 (x(Nb) 0.4844) + LIQUID (x(Nb) 0.52325) |
| FeNb-08Yos.tdb | 1757.91 | MU_D85 (x(Nb) 0.49373) + LIQUID (x(Nb) 0.59261) + BCC_A2 (x(Nb) 0.92292) |
| FeNb-08Yos.tdb | 1660.13 | BCC_A2 (x(Nb) 0.03267) + LIQUID (x(Nb) 0.10093) + FE2NB_C14 (x(Nb) 0.30848) |
| FeNb-08Yos.tdb | 1457.15 | FCC_A1 (x(Nb) 0.0117) + BCC_A2 (x(Nb) 0.01661) + FE2NB_C14 (x(Nb) 0.32038) |
| FeNb-08Yos.tdb | 1217.42 | FCC_A1 (x(Nb) 0.00276) + BCC_A2 (x(Nb) 0.00508) + FE2NB_C14 (x(Nb) 0.32734) |
| FeNb-09Mat.tdb | 1789.19 | C14_LAVES (x(Nb) 0.35099) + MU_D85 (x(Nb) 0.48464) + LIQUID (x(Nb) 0.51847) |
| FeNb-09Mat.tdb | 1756.94 | MU_D85 (x(Nb) 0.50269) + LIQUID (x(Nb) 0.59231) + BCC_A2 (x(Nb) 0.92287) |
| FeNb-09Mat.tdb | 1667.46 | BCC_A2 (x(Nb) 0.03123) + LIQUID (x(Nb) 0.0965) + C14_LAVES (x(Nb) 0.30521) |
| FeNb-09Mat.tdb | 1472.2 | FCC_A1 (x(Nb) 0.01154) + BCC_A2 (x(Nb) 0.01624) + C14_LAVES (x(Nb) 0.3082) |
| FeNb-09Mat.tdb | 1215.25 | FCC_A1 (x(Nb) 0.00259) + BCC_A2 (x(Nb) 0.00478) + C14_LAVES (x(Nb) 0.31478) |
| FeNb-12Khv.tdb | 1804.9 | C14_LAVES (x(Nb) 0.40207) + MU_D85 (x(Nb) 0.49115) + LIQUID (x(Nb) 0.5097) |
| FeNb-12Khv.tdb | 1779.69 | MU_D85 (x(Nb) 0.51455) + LIQUID (x(Nb) 0.57889) + BCC_A2 (x(Nb) 0.90656) |
| FeNb-12Khv.tdb | 1642.65 | BCC_A2 (x(Nb) 0.03201) + LIQUID (x(Nb) 0.09642) + C14_LAVES (x(Nb) 0.25074) |
| FeNb-12Khv.tdb | 1454.14 | FCC_A1 (x(Nb) 0.01246) + BCC_A2 (x(Nb) 0.01821) + C14_LAVES (x(Nb) 0.25487) |
| FeNb-12Khv.tdb | 1216.32 | FCC_A1 (x(Nb) 0.00438) + BCC_A2 (x(Nb) 0.00675) + C14_LAVES (x(Nb) 0.26284) |
| FeNb-12Liu.tdb | 1797.38 | C14_LAVES (x(Nb) 0.40648) + MU_D85 (x(Nb) 0.486) + LIQUID (x(Nb) 0.5087) |
| FeNb-12Liu.tdb | 1775.98 | MU_D85 (x(Nb) 0.50621) + LIQUID (x(Nb) 0.56186) + BCC_A2 (x(Nb) 0.90925) |
| FeNb-12Liu.tdb | 1635.65 | BCC_A2 (x(Nb) 0.03208) + LIQUID (x(Nb) 0.10173) + C14_LAVES (x(Nb) 0.24854) |
| FeNb-12Liu.tdb | 1452.46 | FCC_A1 (x(Nb) 0.01098) + BCC_A2 (x(Nb) 0.01692) + C14_LAVES (x(Nb) 0.25209) |
| FeNb-12Liu.tdb | 1217.24 | FCC_A1 (x(Nb) 0.00296) + BCC_A2 (x(Nb) 0.00542) + C14_LAVES (x(Nb) 0.2596) |
| FeNb-13Khv.tdb | 1808.05 | C14_LAVES (x(Nb) 0.40374) + MU_D85 (x(Nb) 0.49813) + LIQUID (x(Nb) 0.52739) |
| FeNb-13Khv.tdb | 1776.92 | MU_D85 (x(Nb) 0.52095) + LIQUID (x(Nb) 0.60062) + BCC_A2 (x(Nb) 0.89304) |
| FeNb-13Khv.tdb | 1647.59 | BCC_A2 (x(Nb) 0.02742) + LIQUID (x(Nb) 0.0923) + C14_LAVES (x(Nb) 0.27228) |
| FeNb-13Khv.tdb | 1455.95 | FCC_A1 (x(Nb) 0.00954) + BCC_A2 (x(Nb) 0.01531) + C14_LAVES (x(Nb) 0.27804) |
| FeNb-13Khv.tdb | 1219.36 | FCC_A1 (x(Nb) 0.00313) + BCC_A2 (x(Nb) 0.00568) + C14_LAVES (x(Nb) 0.28774) |
| FeNb-15Mie.tdb | 1790.26 | FE2NB_C14 (x(Nb) 0.33333) + MU_D85 (x(Nb) 0.47182) + LIQUID (x(Nb) 0.48844) |
| FeNb-15Mie.tdb | 1790.26 | FE2NB_C14 (x(Nb) 0.33333) + MU_D85 (x(Nb) 0.47181) + LIQUID (x(Nb) 0.48826) |
| FeNb-15Mie.tdb | 1725.98 | MU_D85 (x(Nb) 0.49498) + LIQUID (x(Nb) 0.60423) + BCC_A2 (x(Nb) 0.92184) |
| FeNb-15Mie.tdb | 1658.21 | BCC_A2 (x(Nb) 0.02652) + LIQUID (x(Nb) 0.10062) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-15Mie.tdb | 1658.21 | BCC_A2 (x(Nb) 0.02651) + LIQUID (x(Nb) 0.10058) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-15Mie.tdb | 1454.67 | FCC_A1 (x(Nb) 0.00973) + BCC_A2 (x(Nb) 0.01545) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-15Mie.tdb | 1454.67 | FCC_A1 (x(Nb) 0.00973) + BCC_A2 (x(Nb) 0.01544) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-15Mie.tdb | 1226.91 | FCC_A1 (x(Nb) 0.00388) + BCC_A2 (x(Nb) 0.00685) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-15Mie.tdb | 1226.91 | FCC_A1 (x(Nb) 0.00387) + BCC_A2 (x(Nb) 0.00684) + FE2NB_C14 (x(Nb) 0.33333) |
| FeNb-16Jac.tdb | 1814.46 | C14_LAVES (x(Nb) 0.40116) + MU_D85 (x(Nb) 0.49574) + LIQUID (x(Nb) 0.52141) |
| FeNb-16Jac.tdb | 1775.56 | MU_D85 (x(Nb) 0.5211) + LIQUID (x(Nb) 0.60027) + BCC_A2 (x(Nb) 0.89273) |
| FeNb-16Jac.tdb | 1647.59 | BCC_A2 (x(Nb) 0.02742) + LIQUID (x(Nb) 0.0923) + C14_LAVES (x(Nb) 0.27228) |
| FeNb-16Jac.tdb | 1455.95 | FCC_A1 (x(Nb) 0.00954) + BCC_A2 (x(Nb) 0.01531) + C14_LAVES (x(Nb) 0.27804) |
| FeNb-16Jac.tdb | 1219.36 | FCC_A1 (x(Nb) 0.00313) + BCC_A2 (x(Nb) 0.00568) + C14_LAVES (x(Nb) 0.28774) |
| FeNb-17He.tdb | 1798.18 | C14_LAVES (x(Nb) 0.36832) + MU_D85 (x(Nb) 0.47119) + LIQUID (x(Nb) 0.52921) |
| FeNb-17He.tdb | 1777.88 | MU_D85 (x(Nb) 0.51563) + LIQUID (x(Nb) 0.57853) + BCC_A2 (x(Nb) 0.9103) |
| FeNb-17He.tdb | 1643.17 | BCC_A2 (x(Nb) 0.03429) + LIQUID (x(Nb) 0.0935) + C14_LAVES (x(Nb) 0.26612) |
| FeNb-17He.tdb | 1453.79 | FCC_A1 (x(Nb) 0.01159) + BCC_A2 (x(Nb) 0.01729) + C14_LAVES (x(Nb) 0.26668) |
| FeNb-17He.tdb | 1212.46 | FCC_A1 (x(Nb) 0.00303) + BCC_A2 (x(Nb) 0.00514) + C14_LAVES (x(Nb) 0.27013) |
| FeNb-17Lu.tdb | 1806.56 | C14_LAVES (x(Nb) 0.38121) + MU_D85 (x(Nb) 0.48684) + LIQUID (x(Nb) 0.50056) |
| FeNb-17Lu.tdb | 1776.83 | MU_D85 (x(Nb) 0.51423) + LIQUID (x(Nb) 0.58261) + BCC_A2 (x(Nb) 0.90655) |
| FeNb-17Lu.tdb | 1638.73 | BCC_A2 (x(Nb) 0.03244) + LIQUID (x(Nb) 0.09902) + C14_LAVES (x(Nb) 0.26151) |
| FeNb-17Lu.tdb | 1455.64 | FCC_A1 (x(Nb) 0.01299) + BCC_A2 (x(Nb) 0.01875) + C14_LAVES (x(Nb) 0.26621) |
| FeNb-17Lu.tdb | 1216.15 | FCC_A1 (x(Nb) 0.00453) + BCC_A2 (x(Nb) 0.0069) + C14_LAVES (x(Nb) 0.27509) |
| FeNb-21Laf.tdb | 1808.61 | C14_LAVES (x(Nb) 0.38953) + MU_D85 (x(Nb) 0.48593) + LIQUID (x(Nb) 0.50779) |
| FeNb-21Laf.tdb | 1805.07 | FCC_A1 (x(Nb) 0) + LIQUID (x(Nb) 0) + BCC_A2 (x(Nb) 0) |
| FeNb-21Laf.tdb | 1760.17 | MU_D85 (x(Nb) 0.51212) + LIQUID (x(Nb) 0.60123) + BCC_A2 (x(Nb) 0.90015) |
| FeNb-21Laf.tdb | 1641.75 | BCC_A2 (x(Nb) 0.02731) + LIQUID (x(Nb) 0.09423) + C14_LAVES (x(Nb) 0.26312) |
| FeNb-21Laf.tdb | 1441.81 | FCC_A1 (x(Nb) 0.00958) + BCC_A2 (x(Nb) 0.01555) + C14_LAVES (x(Nb) 0.26608) |
| FeNb-21Laf.tdb | 1225.23 | FCC_A1 (x(Nb) 0.00389) + BCC_A2 (x(Nb) 0.0068) + C14_LAVES (x(Nb) 0.27142) |
| FeNb-23Pan.tdb | 1814.26 | C14_LAVES (x(Nb) 0.37899) + MU_D85 (x(Nb) 0.47593) + LIQUID (x(Nb) 0.5168) |
| FeNb-23Pan.tdb | 1773.1 | MU_D85 (x(Nb) 0.50521) + LIQUID (x(Nb) 0.59964) + BCC_A2 (x(Nb) 0.89217) |
| FeNb-23Pan.tdb | 1653.21 | BCC_A2 (x(Nb) 0.02627) + LIQUID (x(Nb) 0.08937) + C14_LAVES (x(Nb) 0.26455) |
| FeNb-23Pan.tdb | 1464.53 | FCC_A1 (x(Nb) 0.00943) + BCC_A2 (x(Nb) 0.01505) + C14_LAVES (x(Nb) 0.26946) |
| FeNb-23Pan.tdb | 1222.42 | FCC_A1 (x(Nb) 0.00337) + BCC_A2 (x(Nb) 0.0061) + C14_LAVES (x(Nb) 0.2786) |
| FeNb-24Sun.tdb | 1794.09 | C14_LAVES (x(Nb) 0.37955) + MU_D85 (x(Nb) 0.49164) + LIQUID (x(Nb) 0.52825) |
| FeNb-24Sun.tdb | 1774.05 | MU_D85 (x(Nb) 0.51687) + LIQUID (x(Nb) 0.58051) + BCC_A2 (x(Nb) 0.91379) |
| FeNb-24Sun.tdb | 1650.26 | BCC_A2 (x(Nb) 0.03045) + LIQUID (x(Nb) 0.09141) + C14_LAVES (x(Nb) 0.26905) |
| FeNb-24Sun.tdb | 1476.55 | FCC_A1 (x(Nb) 0.01529) + BCC_A2 (x(Nb) 0.02037) + C14_LAVES (x(Nb) 0.27281) |
| FeNb-24Sun.tdb | 1229.6 | FCC_A1 (x(Nb) 0.00708) + BCC_A2 (x(Nb) 0.01012) + C14_LAVES (x(Nb) 0.28034) |
| FeNb-90Hua-LB.tdb | 1867.23 | C14_LAVES (x(Nb) 0.33333) + LIQUID (x(Nb) 0.40247) + MU_D85 (x(Nb) 0.45756) |
| FeNb-90Hua-LB.tdb | 1867.23 | C14_LAVES (x(Nb) 0.33333) + LIQUID (x(Nb) 0.40243) + MU_D85 (x(Nb) 0.45756) |
| FeNb-90Hua-LB.tdb | 1673.75 | MU_D85 (x(Nb) 0.46137) + LIQUID (x(Nb) 0.65694) + BCC_A2 (x(Nb) 0.91012) |
| FeNb-90Hua-LB.tdb | 1649.65 | BCC_A2 (x(Nb) 0.02628) + LIQUID (x(Nb) 0.10482) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-90Hua-LB.tdb | 1649.65 | BCC_A2 (x(Nb) 0.02626) + LIQUID (x(Nb) 0.10475) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-90Hua-LB.tdb | 1460.17 | FCC_A1 (x(Nb) 0.00946) + BCC_A2 (x(Nb) 0.01535) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-90Hua-LB.tdb | 1460.17 | FCC_A1 (x(Nb) 0.00946) + BCC_A2 (x(Nb) 0.01534) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-90Hua-LB.tdb | 1222.34 | FCC_A1 (x(Nb) 0.00347) + BCC_A2 (x(Nb) 0.00624) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-90Hua-LB.tdb | 1222.34 | FCC_A1 (x(Nb) 0.00345) + BCC_A2 (x(Nb) 0.00621) + C14_LAVES (x(Nb) 0.33333) |
| FeNb-94Coe.tdb | 1795.28 | C14_LAVES (x(Nb) 0.38617) + MU_D85 (x(Nb) 0.49313) + LIQUID (x(Nb) 0.52609) |
| FeNb-94Coe.tdb | 1771.24 | MU_D85 (x(Nb) 0.50969) + LIQUID (x(Nb) 0.58023) + BCC_A2 (x(Nb) 0.89383) |
| FeNb-94Coe.tdb | 1645.55 | BCC_A2 (x(Nb) 0.02428) + LIQUID (x(Nb) 0.0967) + C14_LAVES (x(Nb) 0.25805) |
| FeNb-94Coe.tdb | 1462.69 | FCC_A1 (x(Nb) 0.00936) + BCC_A2 (x(Nb) 0.01521) + C14_LAVES (x(Nb) 0.2718) |
| FeNb-94Coe.tdb | 1232.3 | FCC_A1 (x(Nb) 0.00343) + BCC_A2 (x(Nb) 0.00677) + C14_LAVES (x(Nb) 0.29227) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/FE/FE-NB.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/FE/FE-NB.json) · [CALPHAD hull FeNb-00Tof](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-00Tof.json) · [CALPHAD hull FeNb-01Lee](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-01Lee.json) · [CALPHAD hull FeNb-08Yos](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-08Yos.json) · [CALPHAD hull FeNb-09Mat](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-09Mat.json) · [CALPHAD hull FeNb-12Khv](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-12Khv.json) · [CALPHAD hull FeNb-12Liu](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-12Liu.json) · [CALPHAD hull FeNb-13Khv](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-13Khv.json) · [CALPHAD hull FeNb-15Mie](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-15Mie.json) · [CALPHAD hull FeNb-16Jac](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-16Jac.json) · [CALPHAD hull FeNb-17He](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-17He.json) · [CALPHAD hull FeNb-17Lu](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-17Lu.json) · [CALPHAD hull FeNb-21Laf](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-21Laf.json) · [CALPHAD hull FeNb-23Pan](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-23Pan.json) · [CALPHAD hull FeNb-90Hua-LB](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-90Hua-LB.json) · [CALPHAD hull FeNb-94Coe](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-NB--FeNb-94Coe.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Fe–Nb system (96)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1923 | congruent melting: Liquid ↔ C14 |  | experimental | [1] Sun 2024; _cites Voronov 1937_ | Table 4, p. 5, row 4; `ORC-362ZFNBBTV` |  |
| 1920.15 | congruent melting: L = Fe2Nb | L: Nb 0.324; Fe2Nb: Fe 0.666667, Nb 0.333333 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 5; `ORC-F7DFGUTKIW` |  |
| 1919.15 | congruent melting: L = Fe2Nb | L: Nb 0.327; Fe2Nb: Fe 0.666667, Nb 0.333333 | model | [2] He 2017 | Table 3, p. 10, row 1; `ORC-7O3MRHLMVY` |  |
| 1918.15 | congruent melting: L = Fe2Nb | L: Nb 0.3333; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 2; `ORC-FH7BNPOBWW` |  |
| 1918 | congruent melting: Liquid ↔ C14 | Liquid: Nb 0.333; C14: Nb 0.333 | experimental | [1] Sun 2024; _cites Mathon 2009_ | Table 4, p. 5, row 3; `ORC-WXOD5LV5TN` |  |
| 1916.15 | congruent melting: L = Fe2Nb | L: Nb 0.324; Fe2Nb: Fe 0.666667, Nb 0.333333 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 4; `ORC-H726OIOJRD` |  |
| 1915 | congruent melting: Liquid ↔ C14 | Liquid: Nb 0.335; C14: Nb 0.335 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 2; `ORC-MRCXN6U53J` |  |
| 1903.15 | congruent melting: L = Fe2Nb | L: Fe 0.666667, Nb 0.333333; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 3; `ORC-GZEHX4NKU3` |  |
| 1903 | congruent melting: Liquid ↔ C14 | Liquid: Nb 0.333; C14: Nb 0.333 | model | [1] Sun 2024 | Table 4, p. 5, row 1; `ORC-RHC277CAWV` |  |
| 1903 | congruent melting: Liquid ↔ C14 |  | experimental | [1] Sun 2024; _cites Bejarano 1991_ [doi](https://doi.org/10.1515/ijmr-1991-820805) | Table 4, p. 5, row 5; `ORC-VU7HXDNY2D` |  |
| 1814 | peritectic: Liquid + C14 ↔ μ | Liquid: Nb 0.519; C14: Nb 0.38; μ: Nb 0.477 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 7; `ORC-YBHHA73OQY` |  |
| 1805.15 | peritectic: Liq + Fe2Nb = Fe7Nb6 | Liq: Nb 0.51; Fe2Nb: Nb 0.402; Fe7Nb6: Nb 0.491 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 9; `ORC-EVVYGBIJAZ` |  |
| 1798.15 | peritectic: Liq + Fe2Nb = Fe7Nb6 | Liq: Nb 0.53; Fe2Nb: Nb 0.368; Fe7Nb6: Nb 0.471 | model | [2] He 2017 | Table 3, p. 10, row 6; `ORC-U2KTGF7R47` |  |
| 1797.15 | peritectic: Liq + Fe2Nb = Fe7Nb6 | Liq: Nb 0.509; Fe2Nb: Nb 0.407; Fe7Nb6: Nb 0.486 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 10; `ORC-UIN2IVJE6P` |  |
| 1796.15 | peritectic: Liq + Fe2Nb = Fe7Nb6 | Liq: Nb 0.52; Fe2Nb: Nb 0.376; Fe7Nb6: Nb 0.465 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 7; `ORC-6HNW3DWL2Q` |  |
| 1796 | peritectic: Liquid + C14 ↔ μ | Liquid: Nb 0.52; C14: Nb 0.376; μ: Nb 0.465 | experimental | [1] Sun 2024; _cites Vob 2011_ | Table 4, p. 5, row 8; `ORC-WR5VYTA7OH` |  |
| 1795 | peritectic: D85 \<=> C14 + Liq. |  | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 19; `ORC-DFVAPIP5KC` |  |
| 1794 | peritectic: Liquid + C14 ↔ μ | Liquid: Nb 0.527; C14: Nb 0.38; μ: Nb 0.491 | model | [1] Sun 2024 | Table 4, p. 5, row 6; `ORC-QIHPCMLB7F` |  |
| 1793.15 | peritectic: Liq + Fe2Nb = Fe7Nb6 | Liq: Nb 0.56; Fe2Nb: Nb 0.37; Fe7Nb6: Nb 0.49 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 8; `ORC-XHMODPSBIW` |  |
| 1793 | peritectic: D85 \<=> C14 + Liq. |  | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 18; `ORC-3CBBH6XRET` |  |
| 1793 | peritectic: Liquid + C14 ↔ μ | Liquid: Nb 0.56; C14: Nb 0.37; μ: Nb 0.49 | experimental | [1] Sun 2024; _cites Bejarano 1993_ [doi](https://doi.org/10.1515/ijmr-1993-840305) | Table 4, p. 5, row 9; `ORC-BGPLPEQUFU` |  |
| 1793 | peritectic: D85 \<=> C14 + Liq. |  | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 20; `ORC-PMZQNCPZT7` |  |
| 1789 | peritectic: D85 \<=> C14 + Liq. |  | model | [3] Mathon 2009 | Table 3, p. 13, row 17; `ORC-LBIK63CNAL` |  |
| 1781.15 | eutectic: Liq = Fe7Nb6 + (Nb) | Liq: Nb 0.586; Fe7Nb6: Nb 0.51; (Nb): Nb 0.91 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 12; `ORC-JIVQIPTDZH` |  |
| 1781 | eutectic: Liquid ↔ μ + BCC_A2 | Liquid: Nb 0.586; μ: Nb 0.51; BCC_A2: Nb 0.91 | experimental | [1] Sun 2024; _cites Vob 2011_ | Table 4, p. 5, row 12; `ORC-55A2NR5KOX` |  |
| 1780.15 | eutectic: Liq = Fe7Nb6 + (Nb) | Liq: Nb 0.579; Fe7Nb6: Nb 0.515; (Nb): Nb 0.907 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 14; `ORC-2P45NEVMD5` |  |
| 1778.15 | eutectic: Liq = Fe7Nb6 + (Nb) | Liq: Nb 0.579; Fe7Nb6: Nb 0.505; (Nb): Nb 0.91 | model | [2] He 2017 | Table 3, p. 10, row 11; `ORC-BGVXDJRPEG` |  |
| 1776.15 | eutectic: Liq = Fe7Nb6 + (Nb) | Liq: Nb 0.562; Fe7Nb6: Nb 0.506; (Nb): Nb 0.909 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 15; `ORC-T3YGK3NFMU` |  |
| 1774 | eutectic: Liquid ↔ μ + BCC_A2 | Liquid: Nb 0.583; μ: Nb 0.516; BCC_A2: Nb 0.91 | model | [1] Sun 2024 | Table 4, p. 5, row 10; `ORC-WC2K2XG2SB` |  |
| 1773.15 | eutectic: Liq = Fe7Nb6 + (Nb) | Liq: Nb 0.59; Fe7Nb6: Nb 0.54; (Nb): Nb 0.93 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 13; `ORC-NKTQRSBICT` |  |
| 1773 | eutectic: Liquid ↔ μ + BCC_A2 | Liquid: Nb 0.59; μ: Nb 0.54; BCC_A2: Nb 0.93 | experimental | [1] Sun 2024; _cites Bejarano 1993_ [doi](https://doi.org/10.1515/ijmr-1993-840305) | Table 4, p. 5, row 13; `ORC-5DV6GJB43D` |  |
| 1773 | eutectic: Liquid ↔ μ + BCC_A2 | Liquid: Nb 0.6; μ: Nb 0.505; BCC_A2: Nb 0.892 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 11; `ORC-BJYXHRRJ2H` |  |
| 1773 | eutectic: D85 + bcc#2 \<=> Liq. |  | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 24; `ORC-QHLS7KLNLK` |  |
| 1771 | eutectic: D85 + bcc#2 \<=> Liq. |  | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 23; `ORC-PFQJXV4K6I` |  |
| 1758 | eutectic: D85 + bcc#2 \<=> Liq. |  | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 22; `ORC-DORXIOPCV7` |  |
| 1757 | eutectic: D85 + bcc#2 \<=> Liq. |  | model | [3] Mathon 2009 | Table 3, p. 13, row 21; `ORC-DFTB3VCYUU` |  |
| 1673.15 | eutectic: L = bcc + l |  | model | [4] Miettinen 2015; _cites Lee 2001_ [doi](https://doi.org/10.1007/s11661-001-0033-x) | p. 2; `ORC-F45QUGK2VE.57ec98` | “The eutectic reaction, L = bcc + l, occurs at 1400 °C according to Lee.\[7\]” |
| 1667 | eutectic: bcc#1 + C14 \<=> Liq. |  | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 10; `ORC-MPWXXOTBXH` |  |
| 1667 | eutectic: bcc#1 + C14 \<=> Liq. |  | model | [3] Mathon 2009 | Table 3, p. 13, row 9; `ORC-T6KJKXMJDX` |  |
| 1654 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.089; BCC_A2: Nb 0.026; C14: Nb 0.265 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 15; `ORC-T5G7OSVD55` |  |
| 1650 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.091; BCC_A2: Nb 0.03; C14: Nb 0.269 | model | [1] Sun 2024 | Table 4, p. 5, row 14; `ORC-TPH7I47MN2` |  |
| 1646.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.082; (αFe): Nb 0.032; Fe2Nb: Nb 0.251 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 17; `ORC-ETN3I4TLTN` |  |
| 1646 | eutectic: bcc#1 + C14 \<=> Liq. |  | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 11; `ORC-PZ3AW5W5QV` |  |
| 1646 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.082; BCC_A2: Nb 0.032; C14: Nb 0.251 | experimental | [1] Sun 2024; _cites Vob 2011_ | Table 4, p. 5, row 16; `ORC-VYDLG3QV4O` |  |
| 1645.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.102; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Gibson 1961_ | Table 3, p. 10, row 20; `ORC-ONUQFXCCJG` |  |
| 1645 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.106 | experimental | [1] Sun 2024; _cites Genders 1939_ | Table 4, p. 5, row 21; `ORC-GGVSXJ24P7` |  |
| 1643.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.096; (αFe): Nb 0.032; Fe2Nb: Nb 0.251 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 22; `ORC-54CQFFWCVK` |  |
| 1643.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.093; (αFe): Nb 0.034; Fe2Nb: Nb 0.266 | model | [2] He 2017 | Table 3, p. 10, row 16; `ORC-UCFJ62WXCU` |  |
| 1643.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.1199; (αFe): Nb 0.0327; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Ferrier 1964_ | Table 3, p. 10, row 19; `ORC-V66KUUWBB5` |  |
| 1643.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.106; (αFe): Nb 0.0327; Fe2Nb: Nb 0.32 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 18; `ORC-V6RL5SCRM4` |  |
| 1643 | eutectic: bcc#1 + C14 \<=> Liq. |  | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 12; `ORC-QJGJ6IKVC6` |  |
| 1643 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.12; BCC_A2: Nb 0.033 | experimental | [1] Sun 2024; _cites Gibson 1961_ | Table 4, p. 5, row 20; `ORC-UFLRQXD5YL` |  |
| 1643 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.106; BCC_A2: Nb 0.033; C14: Nb 0.32 | experimental | [1] Sun 2024; _cites Bejarano 1993_ [doi](https://doi.org/10.1515/ijmr-1993-840305) | Table 4, p. 5, row 17; `ORC-YSSQZGZUQX` |  |
| 1638 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.098 | experimental | [1] Sun 2024; _cites Goldschmidt 1960_ | Table 4, p. 5, row 19; `ORC-47JRBQNLLY` |  |
| 1635.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.102; (αFe): Nb 0.032; Fe2Nb: Nb 0.249 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 23; `ORC-DO7I6VCXG2` |  |
| 1629 | eutectic: Liquid ↔ BCC_A2 + C14 | BCC_A2: Nb 0.076; C14: Nb 0.339 | experimental | [1] Sun 2024; _cites Voronov 1937_ | Table 4, p. 5, row 18; `ORC-YTTWFVGTCX` |  |
| 1621.15 | eutectic: Liq = (αFe) + Fe2Nb | Liq: Nb 0.1; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Goldschmidt 1960_ | Table 3, p. 10, row 21; `ORC-ZJYMXPXQSA` |  |
| 1621 | eutectic: Liquid ↔ BCC_A2 + C14 | Liquid: Nb 0.1 | experimental | [1] Sun 2024; _cites Paul 1986_ [doi](https://doi.org/10.1007/bf02869000) | Table 4, p. 5, row 22; `ORC-67L7IXJPR4` |  |
| 1493.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Genders 1939_ | Table 3, p. 10, row 29; `ORC-FJX5EPB4GK` |  |
| 1493 | eutectic: BCC_A2 ↔ FCC_A1 + C14 |  | experimental | [1] Sun 2024; _cites Eggers 1938_ | Table 4, p. 5, row 31; `ORC-5P54EW6KJI` |  |
| 1493 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.013; FCC_A1: Nb 0.001; C14: Nb 0.339 | experimental | [1] Sun 2024; _cites Voronov 1937_ | Table 4, p. 5, row 26; `ORC-XH7J6JCOR5` |  |
| 1481.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.017; (γFe): Nb 0.0099; Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Ferrier 1964_ | Table 3, p. 10, row 27; `ORC-7L6SOVG3XW` |  |
| 1481 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.1; FCC_A1: Nb 0.016 | experimental | [1] Sun 2024; _cites Gibson 1961_ | Table 4, p. 5, row 28; `ORC-2GF3WLRMU7` |  |
| 1476 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.02; FCC_A1: Nb 0.015; C14: Nb 0.273 | model | [1] Sun 2024 | Table 4, p. 5, row 23; `ORC-IQESCCRN7I` |  |
| 1473.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Gibson 1961_ | Table 3, p. 10, row 28; `ORC-PEGFGDTJOT` |  |
| 1473 | eutectic: BCC_A2 ↔ FCC_A1 + C14 |  | experimental | [1] Sun 2024; _cites Genders 1939_ | Table 4, p. 5, row 29; `ORC-W7DO4YCRTM` |  |
| 1472 | eutectoid: fcc + C14 \<=> bcc#1 |  | model | [3] Mathon 2009 | Table 3, p. 13, row 5; `ORC-EQ4FDTK6IR` |  |
| 1472 | eutectoid: fcc + C14 \<=> bcc#1 |  | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 6; `ORC-SUL2AEGPM7` |  |
| 1466 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.015; FCC_A1: Nb 0.009; C14: Nb 0.269 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 24; `ORC-AROQ62XCLW` |  |
| 1463.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.0156; (γFe): Nb 0.01; Fe2Nb: Nb 0.32 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 26; `ORC-JXBT7EXEYA` |  |
| 1463 | eutectoid: fcc + C14 \<=> bcc#1 |  | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 8; `ORC-6N4NEBAQRD` |  |
| 1463 | eutectoid: fcc + C14 \<=> bcc#1 |  | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 7; `ORC-SNTM5MHWUC` |  |
| 1463 | eutectic: BCC_A2 ↔ FCC_A1 + C14 |  | experimental | [1] Sun 2024; _cites Abrahamson 1966_ | Table 4, p. 5, row 30; `ORC-TJBAP3RFIV` |  |
| 1463 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.063; FCC_A1: Nb 0.01; C14: Nb 0.32 | experimental | [1] Sun 2024; _cites Bejarano 1993_ [doi](https://doi.org/10.1515/ijmr-1993-840305) | Table 4, p. 5, row 27; `ORC-YJ4YFV6BTH` |  |
| 1456.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.015; (γFe): Nb 0.011; Fe2Nb: Nb 0.265 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 25; `ORC-NI3QPJ3RV3` |  |
| 1456 | eutectic: BCC_A2 ↔ FCC_A1 + C14 | BCC_A2: Nb 0.015; FCC_A1: Nb 0.011; C14: Nb 0.265 | experimental | [1] Sun 2024; _cites Vob 2011_ | Table 4, p. 5, row 25; `ORC-GM4JDAPI3A` |  |
| 1454.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.018; (γFe): Nb 0.012; Fe2Nb: Nb 0.255 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 30; `ORC-4OCGHL4A77` |  |
| 1454.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.017; (γFe): Nb 0.012; Fe2Nb: Nb 0.267 | model | [2] He 2017 | Table 3, p. 10, row 24; `ORC-XDREAQ5YKB` |  |
| 1452.15 | eutectoid: (αFe) = (γFe) + Fe2Nb | (αFe): Nb 0.017; (γFe): Nb 0.011; Fe2Nb: Nb 0.252 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 31; `ORC-6N6T7SIHDZ` |  |
| 1262.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | Fe2Nb: Fe 0.666667, Nb 0.333333 | experimental | [2] He 2017; _cites Genders 1939_ | Table 3, p. 10, row 35; `ORC-IT2XZSZKRD` |  |
| 1262 | eutectic: FCC_A1 + C14 ↔ BCC_A2 |  | experimental | [1] Sun 2024; _cites Eggers 1938_ | Table 4, p. 5, row 37; `ORC-CJYSC4ZTTN` |  |
| 1238 | eutectic: FCC_A1 + C14 ↔ BCC_A2 | FCC_A1: Nb 0.005; C14: Nb 0.348; BCC_A2: Nb 0.031 | experimental | [1] Sun 2024; _cites Voronov 1937_ | Table 4, p. 5, row 35; `ORC-CS2UPGZHFM` |  |
| 1233.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | (γFe): Nb 0.0043; Fe2Nb: Nb 0.32; (αFe): Nb 0.0073 | experimental | [2] He 2017; _cites Zelaya 1993_ | Table 3, p. 10, row 34; `ORC-HULXCLQPRN` |  |
| 1233 | peritectoid: bcc#1 \<=> fcc + C14 |  | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 4; `ORC-6ROO33KV4C` |  |
| 1232 | peritectoid: bcc#1 \<=> fcc + C14 |  | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 3; `ORC-ON2HLX7TUP` |  |
| 1230 | eutectic: FCC_A1 + C14 ↔ BCC_A2 | FCC_A1: Nb 0.007; C14: Nb 0.28; BCC_A2: Nb 0.01 | model | [1] Sun 2024 | Table 4, p. 5, row 32; `ORC-EDMQ2UOPVN` |  |
| 1223 | eutectic: FCC_A1 + C14 ↔ BCC_A2 | FCC_A1: Nb 0.004; C14: Nb 0.32; BCC_A2: Nb 0.007 | experimental | [1] Sun 2024; _cites Bejarano 1993_ [doi](https://doi.org/10.1515/ijmr-1993-840305) | Table 4, p. 5, row 36; `ORC-6SUDM4FQRW` |  |
| 1223 | eutectic: FCC_A1 + C14 ↔ BCC_A2 |  | experimental | [1] Sun 2024; _cites Abrahamson 1966_ | Table 4, p. 5, row 38; `ORC-ATAU4E6ZVB` |  |
| 1222 | eutectic: FCC_A1 + C14 ↔ BCC_A2 | FCC_A1: Nb 0.003; C14: Nb 0.279; BCC_A2: Nb 0.006 | model | [1] Sun 2024; _cites Pan 2023_ [doi](https://doi.org/10.1016/j.calphad.2023.102529) | Table 4, p. 5, row 33; `ORC-CDT4KTF7TM` |  |
| 1217.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | (γFe): Nb 0.003; Fe2Nb: Nb 0.2596; (αFe): Nb 0.0054 | model | [2] He 2017; _cites Liu 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.03.004) | Table 3, p. 10, row 37; `ORC-PMVIQIMK3Y` |  |
| 1216.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | (γFe): Nb 0.0044; Fe2Nb: Nb 0.263; (αFe): Nb 0.0068 | model | [2] He 2017; _cites Khvan 2012_ [doi](https://doi.org/10.1016/j.calphad.2012.09.001) | Table 3, p. 10, row 36; `ORC-CSMT6XUNY7` |  |
| 1216.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | Fe2Nb: Nb 0.276 | experimental | [2] He 2017; _cites Vo 2011_ [doi](https://doi.org/10.1007/s11669-010-9808-3) | Table 3, p. 10, row 33; `ORC-QAIN6C3XPI` |  |
| 1216 | eutectic: FCC_A1 + C14 ↔ BCC_A2 | C14: Nb 0.276 | experimental | [1] Sun 2024; _cites Vob 2011_ | Table 4, p. 5, row 34; `ORC-QQ5DDOG22V` |  |
| 1215 | peritectoid: bcc#1 \<=> fcc + C14 |  | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 2; `ORC-HFYEAYZMRU` |  |
| 1215 | peritectoid: bcc#1 \<=> fcc + C14 |  | model | [3] Mathon 2009 | Table 3, p. 13, row 1; `ORC-ROT7Q3FQJY` |  |
| 1212.15 | eutectoid: (γFe) + Fe2Nb = (αFe) | (γFe): Nb 0.003; Fe2Nb: Nb 0.27; (αFe): Nb 0.005 | model | [2] He 2017 | Table 3, p. 10, row 32; `ORC-SYREFXPJSO` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Fe–Nb system (9)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Fe0.6667Nb0.3333 |  | -23.7 kJ/mol (basis unstated) | 1200 | experimental |  |  | [5] Toffolon 2000; _cites ref. 69_ | Table I, p. 2, row 2; `ORC-6GZDNBDPVG.f8c9c1` |  |
| Fe0.6667Nb0.3333 |  | -23.67 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000 | Table I, p. 2, row 9; `ORC-4D3HCPNIM4.d421c0` |  |
| Fe0.6667Nb0.3333 |  | -23.41 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 94_ | Table I, p. 2, row 8; `ORC-YJXLAG7DV2.25b2e8` |  |
| Fe0.6667Nb0.3333 |  | -22.5 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 67_ | Table I, p. 2, row 3; `ORC-HMUZXUJIKC.b81d4e` |  |
| Fe0.6667Nb0.3333 |  | -21 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 77_ | Table I, p. 2, row 5; `ORC-EOMC5BUDBU.82d6bd` |  |
| Fe0.6667Nb0.3333 |  | -20.5 kJ/mol (basis unstated) | 1250 | experimental |  |  | [5] Toffolon 2000; _cites ref. 66_ | Table I, p. 2, row 1; `ORC-TGC4CYC2G5.de2249` |  |
| Fe0.6667Nb0.3333 |  | -17.9 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 72_ | Table I, p. 2, row 4; `ORC-Q4DYQP7SWB.32f29d` |  |
| Fe0.6667Nb0.3333 |  | -17.87 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 90_ | Table I, p. 2, row 6; `ORC-CIWBF76ZZE.2cb146` |  |
| Fe0.6667Nb0.3333 |  | -12.24 kJ/mol (basis unstated) |  | model |  |  | [5] Toffolon 2000; _cites ref. 93_ | Table I, p. 2, row 7; `ORC-X3ZWWARLFB.8429f0` |  |

## Other properties

### Phase transition (4)

Table: Phase transition, Fe–Nb system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1903 K | 1903 | congruent melting: C14 \<=> Liq. | experimental | [3] Mathon 2009; _cites Zelaya 1993_ | Table 3, p. 13, row 16; `ORC-EIWHA7DZH3` |  |
| Phase transition | 1904 K | 1904 | congruent melting: C14 \<=> Liq. | model | [3] Mathon 2009 | Table 3, p. 13, row 13; `ORC-FFS2WALRZJ` |  |
| Phase transition | 1904 K | 1904 | congruent melting: C14 \<=> Liq. | model | [3] Mathon 2009; _cites Toffolon 2000_ [doi](https://doi.org/10.1016/s0364-5916%2800%2900017-1) | Table 3, p. 13, row 14; `ORC-LGEZ7WG6AU` |  |
| Phase transition | 1920 K | 1920 | congruent melting: C14 \<=> Liq. | model | [3] Mathon 2009; _cites Coelho 1994_ | Table 3, p. 13, row 15; `ORC-RT5WJNGHGD` |  |

### Mixing / partial (2)

Table: Mixing / partial, Fe–Nb system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy of mixing; _printed: -ΔS measured_ | -4.56 J/mol (basis unstated)/K | 1200 | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | experimental | [5] Toffolon 2000; _cites ref. 69_ | Table I, p. 2, row 2; `ORC-6GZDNBDPVG.105d34` |  |
| Entropy of mixing; _printed: -ΔS measured_ | -4.6 J/mol (basis unstated)/K | 1250 | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | experimental | [5] Toffolon 2000; _cites ref. 66_ | Table I, p. 2, row 1; `ORC-TGC4CYC2G5.69bf8e` |  |

### Heat capacity / entropy / enthalpy (4)

Table: Heat capacity / entropy / enthalpy, Fe–Nb system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy; _printed: -ΔS calculated_ | -5.42 J/mol.at.K |  | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | model | [5] Toffolon 2000 | Table I, p. 2, row 9; `ORC-4D3HCPNIM4.85d3fc` |  |
| Entropy; _printed: -ΔS calculated_ | -1.84 J/mol.at.K |  | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | model | [5] Toffolon 2000; _cites ref. 90_ | Table I, p. 2, row 6; `ORC-CIWBF76ZZE.4fb36d` |  |
| Entropy; _printed: -ΔS calculated_ | -0.33 J/mol.at.K |  | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | model | [5] Toffolon 2000; _cites ref. 93_ | Table I, p. 2, row 7; `ORC-X3ZWWARLFB.495b2f` |  |
| Entropy; _printed: -ΔS calculated_ | -5.33 J/mol.at.K |  | Fe0.6667Nb0.3333; _alloy: Nb 0.3333_ | model | [5] Toffolon 2000; _cites ref. 94_ | Table I, p. 2, row 8; `ORC-YJXLAG7DV2.b0f285` |  |

## Sources

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

1. Hui Sun, Chuangye Wang, Shun-Li Shang, Allison M. Beese, Ji-Cheng Zhao, Zi-Kui Liu, Thermodynamic modeling of Fe-Nb and Fe-Nb-Ni systems supported by first-principles calculations and diffusion-multiple measurements, Acta Materialia 268, 119747 (2024). [doi:10.1016/j.actamat.2024.119747](https://doi.org/10.1016/j.actamat.2024.119747)
2. Cuiyun He, Yuting Qin, Frank Stein, Thermodynamic Assessment of the Fe-Al-Nb System with Updated Fe-Nb Description, J. Phase Equilib. Diffus. 38, 771-787 (2017). [doi:10.1007/s11669-017-0566-3](https://doi.org/10.1007/s11669-017-0566-3)
3. Muriel Mathon, Damien Connétable, Bo Sundman, Jacques Lacaze, Calphad-type assessment of the Fe–Nb–Ni ternary system, Calphad 33, 136-161 (2009). [doi:10.1016/j.calphad.2008.10.005](https://doi.org/10.1016/j.calphad.2008.10.005)
4. Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P systems. Part 5: Fe-Nb-P, J. Phase Equilib. Diffus. 36, 68-77 (2015). [doi:10.1007/s11669-014-0351-5](https://doi.org/10.1007/s11669-014-0351-5)
5. C. Toffolon, C. Servant, Thermodynamic assessment of the Fe-Nb system, Calphad 24, 97-112 (2000). [doi:10.1016/s0364-5916(00)00017-1](https://doi.org/10.1016/s0364-5916%2800%2900017-1)

## 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-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/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). https://doi.org/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). 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_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}
}
```

---

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/).