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High Temperature Compressive Properties and Deformation Microstructure of Fe-25Al-10Ti Intermetallic Alloy

Published online by Cambridge University Press:  21 March 2011

Su-Ming Zhu ,
Kazushi Sakamoto ,
Makoto Tamura  and
Kunihiko Iwasaki
Su-Ming Zhu
Affiliation:
Japan Ultra-high Temperature Materials Research Institute, Ube, Yamaguchi 755–0001, Japan
Kazushi Sakamoto
Affiliation:
Japan Ultra-high Temperature Materials Research Institute, Ube, Yamaguchi 755–0001, Japan
Makoto Tamura
Affiliation:
Japan Ultra-high Temperature Materials Research Institute, Ube, Yamaguchi 755–0001, Japan
Kunihiko Iwasaki
Affiliation:
Japan Ultra-high Temperature Materials Research Institute, Ube, Yamaguchi 755–0001, Japan
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Abstract

The compressive properties of Fe-25Al-10Ti intermetallic alloy were studied as a function of temperature and strain rate. Optical microscopy and transmission electron microscopy (TEM) were used to examine the deformation microstructure. The alloy exhibited strong tendency of strain hardening at low temperatures. A positive temperature dependence of strength was observed in the 673 – 873 K range. The mechanical behavior was interpreted in terms of dislocation structures. Based on the analysis of the stress-strain response, strain rate sensitivity and deformation microstructure, possible hot working range was proposed.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 646 , 2000 , N5.18.1
Copyright
Copyright © Materials Research Society 2001

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References

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