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An Explanation of the Small Strain-Rate Sensitivity of Ni3Al

Published online by Cambridge University Press:  15 February 2011

Y. Q. Sun
Y. Q. Sun*
Affiliation:
Wright Laboratory, Materials Directorate, WL/MLLM, and Systran Corp., Dayton, Ohio.
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Abstract

Based on the superkink model, an explanation is given in this paper for the small strain-rate sensitivity of the anomalous yield stress of Ni3Al. The yield stress is proposed to be the stress needed to destabilise the average superkinks and it varies inversely with superkink height. The yield stress is insensitive to the strain-rate because the superkink height is controlled by the rate at which the superkink widens and is not directly related with the superkink propagation speed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 523
Copyright
Copyright © Materials Research Society 1997

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References

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