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Stress response by the strain-rate change in binary, stoichiometric Ni3AI single crystal

Published online by Cambridge University Press:  15 February 2011

M. Demura  and
T. Hirano
M. Demura
Affiliation:
National Research Institute for Metals, 1–2–1 Sengen, Tsukuba, Ibaraki 305, Japan
T. Hirano
Affiliation:
National Research Institute for Metals, 1–2–1 Sengen, Tsukuba, Ibaraki 305, Japan
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Abstract

The strain-rate dependence of flow stress in single crystals of binary, stoichiometric Ni3Al was studied in the temperature region of the yield stress anomaly. Below 400 K, the steady-state flow stress was found to be independent of strain rate, though it changed temporarily when the strain rate was changed. The strain-rate insensitivity can be explained by assuming that the flow stress is controlled by the multiplication/immobilization of mobile dislocations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 549
Copyright
Copyright © Materials Research Society 1997

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References

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