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Slip Transition in [001] Oriented Nial at High Temperatures

Published online by Cambridge University Press:  26 February 2011

J.T. Kim  and
R. Gibala
J.T. Kim
Affiliation:
Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI
R. Gibala
Affiliation:
Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI
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Abstract

The present work was undertaken to understand the transition in slip direction In [001] oriented NiAl as a function of temperature. Single crystals of [001] NiAl were deformed at room temperature to produce <111> dislocations and were subsequently annealed at various temperatures in order to see the effect of temperature on the stability of the <111> dislocation. These results were compared with corresponding dislocation substructures of specimens deformed directly at high temperatures. During annealing <111> dislocations are dissociated into <001>+<110> dislocations at 773–923 K. It is also observed that <111> dislocations can be dissociated into <001>+<110> dislocations during deformation in the vicinity of the transition temperature of around 773 K. The quantitative details of these changes depend on deformation or annealing temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 261
Copyright
Copyright © Materials Research Society 1991

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References

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