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A review of recent developments in Fe3Al-based alloys

Published online by Cambridge University Press:  31 January 2011

C.G. McKamey ,
J.H. DeVan ,
P.F. Tortorelli  and
V.K. Sikka
C.G. McKamey
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
J.H. DeVan
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
P.F. Tortorelli
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
V.K. Sikka
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
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Abstract

Fe3Al-based iron aluminides have been of interest for many years because of their excellent oxidation and sulfidation resistance. However, limited room temperature ductility (<5%) and a sharp drop in strength above 600 °C have limited their consideration for use as structural materials. Recent improvements in tensile properties, especially improvements in ductility produced through control of composition and microstructure, and advances in the understanding of environmental embrittlement in intermetallics, including iron aluminides, have resulted in renewed interest in this system for structural applications. The purpose of this paper is to summarize recent developments concerning Fe3Al-based aluminides, including alloy development efforts and environmental embrittlement studies. This report will concentrate on literature published since about 1980, and will review studies of fabrication, mechanical properties, and corrosion resistance that have been conducted since that time.

Type
Commentaries and Reviews
Information
Journal of Materials Research , Volume 6 , Issue 8 , August 1991 , pp. 1779 - 1805
Copyright
Copyright © Materials Research Society 1991

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