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Dislocation Exhaustion During Plastic Deformation

Published online by Cambridge University Press:  21 March 2011

Olivier Couteau ,
Corinne Charbonnier ,
Tomas Kruml  and
Jean-Luc Martin
Olivier Couteau
Affiliation:
Ecole Polytechnique Fédérale (EPFL), Département de Physique, CH 1015 Lausanne, Switzerland
Corinne Charbonnier
Affiliation:
Ecole Polytechnique Fédérale (EPFL), Département de Physique, CH 1015 Lausanne, Switzerland
Tomas Kruml
Affiliation:
Ecole Polytechnique Fédérale (EPFL), Département de Physique, CH 1015 Lausanne, Switzerland
Jean-Luc Martin
Affiliation:
Ecole Polytechnique Fédérale (EPFL), Département de Physique, CH 1015 Lausanne, Switzerland
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Abstract

Repeated stress-relaxation experiments are used to characterize the deformation parameters in 3 types of single crystals (Cu, Ni3Al and Ge) in which different dislocation mechanisms are known to operate. Mobile dislocation exhaustion rates and the amplitude of the yield point at reloading after stress-relaxation are measured. These two parameters are discussed in terms of the work-hardening coefficient in monotonic tests.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 653: Symposium Z – Multiscale Modeling of Materials-2000 , 2000 , Z1.7.1
Copyright
Copyright © Materials Research Society 2001

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