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Dislocation patterning and conservative recovery in single slip

Published online by Cambridge University Press:  14 March 2011

Patrick Veyssière and
Fabienne Grégori
Patrick Veyssière
Affiliation:
LEM, CNRS-ONERA, BP 72, 92322 Châtillon cedex, France
Fabienne Grégori
Affiliation:
LPMTM, Institut Galilée, 99 av. J.B. Clément, 93430 Villetaneuse, France
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Abstract

Prismatic loops generated by cross-slip are organised in staircase-like strings such that the beginning of a loop corresponds in the screw orientation with the end of its neighbour. Strings constitute nucleation sites for dislocation tangles thus offering an explanation for spontaneous patterning in single glide. A loop string can be partially and even totally eliminated by a single impacting dislocation. In dense walls, loop refinement can also take place conservatively by mutual annihilation of loops of opposite signs.

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References

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