Paper Title:
Energy Changes and the Lattice Resistance
  Abstract

The aim of this paper is to study the effect of relaxing the assumption in the Peierls analysis that the dislocation must be wide compared to the atom spacing. To do this the use of the continuum description of the in-plane strains caused by the presence of an edge dislocation is replaced by an atomistic interaction taken to be linear elastic. It is found that in this case the inplane interactions give a contribution to the overall misfit energy changes that are not present in the Peierls analysis because of the use of a continuum approach. This contribution modifies these energy changes so that the total misfit energy is a minimum at the conventional low energy positions (whereas in the Peierls analysis it is a maximum) and gives values of the Peierls stress in reasonable agreement with those measured.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
271-276
DOI
10.4028/www.scientific.net/KEM.317-318.271
Citation
W.J. Clegg, L. Vandeperre, J.E. Pitchford, "Energy Changes and the Lattice Resistance", Key Engineering Materials, Vols. 317-318, pp. 271-276, 2006
Online since
August 2006
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Price
$32.00
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