Circular dislocation pile-ups
- 1 May 1967
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 15 (137), 1059-1063
- https://doi.org/10.1080/14786436708221653
Abstract
A model of concentric circular dislocation loops is used to examine the Hall-Petch relation. For a given critical stress concentration at the grain boundary, the Hall-Petch slope produced by this model is higher than that from either single or double-ended pile-ups of infinite straight dislocations. The minimum stress required to maintain a certain number of circular dislocations is compared with the stress necessary for the continuous distribution of these dislocations in a circular slip zone.Keywords
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