Partial Redetermination of the Fe-W Phase Diagram

被引：0
|
作者：
Annie Antoni-Zdziobek
Thierry Commeau
Jean-Marc Joubert
机构：
[1] SIMAP,Chimie Métallurgique des Terres Rares, Institut de Chimie et des Matériaux Paris
[2] INP Grenoble-CNRS-UJF,Est, CNRS
[3] Eurotungstène,undefined
[4] Eramet Group,undefined
[5] Université Paris-Est Créteil,undefined
来源：
Metallurgical and Materials Transactions A | 2013年 / 44卷
关键词：
Solid Solubility; Diffusion Couple; Atomic Volume; Silica Tube; Calculated Phase Diagram;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：2996 / 3003
页数：7
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