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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
Article

Abstract

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.

Keywords

Solid Solubility Diffusion Couple Atomic Volume Silica Tube Calculated Phase Diagram 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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