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Structural Evolution of Fe Rich Fe-Al Alloys During Ball Milling and Subsequent Heat Treatment

Published online by Cambridge University Press:  10 February 2011

H. G. Jiang ,
R. J. Perez ,
M. L. Lau  and
E. J. Lavernia
H. G. Jiang
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Irvine. Irvine, CA 92697–2575, jhang@eng.uci.edu
R. J. Perez
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Irvine. Irvine, CA 92697–2575, jhang@eng.uci.edu
M. L. Lau
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Irvine. Irvine, CA 92697–2575, jhang@eng.uci.edu
E. J. Lavernia
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Irvine. Irvine, CA 92697–2575, jhang@eng.uci.edu
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Abstract

X-ray diffraction (XRD) and differential scanning calorimetry (DSC) have been utilized to investigate the structural evolution of Fe rich Fe-Al alloys during ball milling. It is found that b.c.c. solid solutions can be formed either through ball milling alone or through ball milling together with heat treatment. Thermal diagrams of the milled Fe-Al powders reveal exothermic peaks corresponding to the formation of cc-Fe(Al) solid solution (in both Fe-4wt.%Al and Fe-10wt.%Al) and the formation of FeAl intermetallic compound (in Fe-10wt.%Al). The transformation kinetics of cc-Fe(Al) solid solution in Fe-4wt.%Al were found to follow the Johnson-Mehl-Avrami equation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 297
Copyright
Copyright © Materials Research Society 1997

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References

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