Metallurgical and Materials Transactions A

, Volume 44, Issue 7, pp 2996–3003 | Cite as

Partial Redetermination of the Fe-W Phase Diagram

  • Annie Antoni-ZdziobekEmail author
  • Thierry Commeau
  • Jean-Marc Joubert


The objective of the current study is to perform a careful investigation of the (Fe) and (W) solvus and of the intermetallic compounds in the Fe-W system as it could have a significant impact on higher-order systems based on this binary system. Two key alloys, Fe-14 at. pct W and Fe-50 at. pct W, and a diffusion couple were synthesized based on the literature. They were studied by long time annealing experiments with a selected heat treatment route, X-Ray diffraction analysis, and electron microprobe analysis with a careful control of impurity levels of C, Si, and O. The two intermetallic phases μ-Fe7W6 and λ-Fe2W are characterized and the composition range of the μ-Fe7W6 phase is specified. The phase previously reported as FeW is most probably a ternary carbide with low carbon content. An accurate determination of the solubility of W in αFe and of Fe in αW is presented.


Solid Solubility Diffusion Couple Atomic Volume Silica Tube Calculated Phase Diagram 
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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2013

Authors and Affiliations

  • Annie Antoni-Zdziobek
    • 1
    Email author
  • Thierry Commeau
    • 2
  • Jean-Marc Joubert
    • 3
  1. 1.SIMAP, INP Grenoble-CNRS-UJFSaint-Martin d’HèresFrance
  2. 2.Eurotungstène, Eramet GroupGrenoble Cedex 9France
  3. 3.Chimie Métallurgique des Terres Rares, Institut de Chimie et des Matériaux Paris-Est, CNRSUniversité Paris-Est CréteilThiais CedexFrance

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