Metallurgical and Materials Transactions A

, Volume 50, Issue 1, pp 377–387 | Cite as

Phase Equilibria in the Fe-Mo-Nb System at 1100 °C and 1200 °C

  • Lei Zou
  • Zeting Du
  • Cuiping GuoEmail author
  • Changrong Li
  • Zhenmin DuEmail author


The isothermal sections of the Fe-Mo-Nb system at 1100 °C and 1200 °C were constructed using X-ray diffraction and scanning electron microscopy coupled with energy dispersive spectroscopy. The experimental results indicate that the isothermal section at 1100 °C consists of six single-phase, nine two-phase, and four three-phase regions. At 1200 °C, there are six single-phase, eight two-phase, and three three-phase regions. The maximum solubilities of Mo in C14-Fe2Nb and μ-Fe7Nb6, and Nb in μ-Fe7Mo6 were determined to be about 26.97, 7.35, 19.74 at. pct at 1100 °C, respectively. The corresponding maximum solubilities of Mo at 1200 °C were determined to be about 25.08, 10.40, 23.85 at. pct at 1200 °C, respectively. No ternary compounds were observed at 1100 °C and 1200 °C.



The work was supported by the National Key R&D Program of China (Grant No. 2016YFB0700501) and National Natural Science Foundation of China (NSFC) (Grant No. 51671025).


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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijingPeople’s Republic of China

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