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Characterization of Deformation Structures in B2 CoAL

Published online by Cambridge University Press:  22 February 2011

M. A. Crimp  and
Y. Zhang
M. A. Crimp
Affiliation:
Michigan State University, Department of Materials Science and Mechanics, East Lansing, MI 48824–1226
Y. Zhang
Affiliation:
Michigan State University, Department of Materials Science and Mechanics, East Lansing, MI 48824–1226
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Abstract

B2 CoAl single crystals with a number of orientations have been deformed at 1300 K and 1000 K. The deformation substructures have been characterized using TEM diffraction contrast techniques supported by image simulations. While <100> slip is found to be the predominant slip mode at these temperatures, <111> and <110> dislocations have also been observed. In particular, in hard orientations <110> dislocations appear to play an active role in initiating the deformation. Additionally, <110> dislocations are often observed as junctions of <100> type dislocations. Under the conditions tested, changes in alloy stoichiometry do not result in any modifications to the dislocation slip behavior.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 53
Copyright
Copyright © Materials Research Society 1995

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