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Effects of Do3 Transitions on the Yield Behavior of Fe-Al Alloys*

Published online by Cambridge University Press:  21 February 2011

H. Inouye
H. Inouye*
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
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Abstract

The effect of DO3 transitions on the yield behavior of alloys near the Fe3 Al composition was investigated by tensile tests. Above 400°C, DO3 (Fe3 Al) ordered alloys exhibited an anomalous increase in yield strength with temperature with a peak value around 560 to 600°C which was not observed if the DO3 ordered alloys were also aged before testing. This yield behavior is explained by the precipitation of a (disordered solid solution) and the formation of B2 (FeAl) via the sequential reactions: DO3→α+DO3→α+B2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 39: Symposium G – High-Temperature Ordered Intermetallic Alloys I , 1984 , 255
Copyright
Copyright © Materials Research Society 1985

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Footnotes

*

Research sponsored by the Office of Naval Research under Interagency Agreement DOE No. 40-1241-82, U.S. Department of Energy under Contract No. DE-ACO5-840R21400 with Martin Marietta Energy Systems, Inc.

References

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