A dislocation multiplication mechanism operating close to a surface
- 1 March 1972
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 25 (3) , 529-536
- https://doi.org/10.1080/14786437208228890
Abstract
A zone-refined aluminium single crystal was mounted on a Lang X-ray camera, stressed in a controlled way and photographed in the stressed state at different stress levels. Based upon the results a model of a dislocation multiplication source operating close to a surface at low stresses is proposed. Primary dislocations close to the surface cross-slip to reduce their line length, making anchoring points at which single-ended Frank-Read sources may start operating and produce rows or bands of new dislocations.Keywords
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