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On the Effect of Strain Rate and Temperature on the Yield Strength Anomaly in L21-structured Fe2AlMn

Published online by Cambridge University Press:  01 February 2011

Markus W. Wittmann ,
Janelle M. Chang ,
Yifeng Liao  and
Ian Baker
Markus W. Wittmann
Affiliation:
markus.wittmann@dartmouth.edu, Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
Janelle M. Chang
Affiliation:
Janelle.Chang@Dartmouth.edu, Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
Ian Baker
Affiliation:
ian.baker@dartmouth.edu, Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
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Abstract

The effects of strain rate and temperature on the yield strength of near-stoichiometric Fe2AlMn single crystals were investigated. In the temperature range 600-800K the yield stress increased with increasing temperature, a response commonly referred to as a yield strength anomaly. No strain rate sensitivity was observed below 750K, but at higher temperatures the yield stress increased with increasing strain rate. Possible mechanisms to explaining the effects of temperature and strain rate are discussed.

Keywords

Fealloystrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1128: Symposium U – Advanced Intermetallic-Based Alloys for Extreme Environment and Energy Applications , 2008 , 1128-U05-09
Copyright
Copyright © Materials Research Society 2009

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References

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