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Slip Systems in Ni3 (Al, Ti) At Temperatures Above the Peak in Flow Stress

Published online by Cambridge University Press:  26 February 2011

Y. Q. Sun  and
P. M. Hazzledine
Y. Q. Sun
Affiliation:
Department of Metallurgy and Science of Materials, University of Oxford
P. M. Hazzledine
Affiliation:
Department of Metallurgy and Science of Materials, University of Oxford
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Abstract

Dislocations in single crystals of Ni3 (Al, Ti) deformed at temperatures above the peak in flow stress have been studied by the TEM “weak-beam” technique. <110> dislocations on the primary cube plane are mostly of edge character, and they have been observed to transform into “super” Lomer- Cottrell locks. <100> dislocations, by contrast, are principally of 45° character. They are believed also to become immobilized by dissociation on {111} planes. Properties of both dislocations on cube planes are discussed and are related to the deformation behaviour of L12 ordered intermetallic alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 197
Copyright
Copyright © Materials Research Society 1989

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References

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