Mechanical properties, strength physics and plasticity

The origin of a drag force of the dry friction type during dynamic glide of edge dislocations in a crystal containing prismatic dislocation loops

V. V. Malashenko<sup>ab

a</sup> Galkin Donetsk Institute for Physics and Engineering, Donetsk
^b Donetsk National Technical University

Abstract: Dynamic drag of edge dislocations by prismatic dislocation loops has been studied. It has been shown that the appearance of activation in the vibration spectrum of moving edge dislocations leads to the dry friction effect. Numerical evaluations have shown that this effect on dislocation dynamics can be rather significant at high loop concentrations.

Received: 05.04.2011
Accepted: 15.04.2011

 English version: Physics of the Solid State, 2011, 53:11, 2321–2325

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