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A Peierls-Nabarro Model for Kink-Pair Generation in Screw Dislocations at Low Temperatures

Published online by Cambridge University Press:  10 February 2011

A.H.W. Ngan
A.H.W. Ngan*
Affiliation:
Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R., China
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Abstract

Kink-pair generation in three-fold screw dislocations in the bcc lattice is investigated within the framework of the generalised Peierls-Nabarro model. Using a piece-wise plane strain approximation, the apparent activation energy is predicted to vary with stress in a parabolic manner which is in good agreement with experimental findings.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 538: Symposium J – Multiscale Modelling of Materials , 1998 , 113
Copyright
Copyright © Materials Research Society 1999

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References

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