Lattice dynamics

Effect of screening of the elastic field of the disclination located at the interface of two half-spaces by a dislocation ensemble

G. F. Sarafanov^a, Yu. G. Shondin<sup>b

a</sup> A. A. Blagonravov Mechanical Engineering Institute, Academy of Sciences of the USSR, Nizhny Novgorod Branch
^b Nizhny Novgorod State Pedagogical University

Abstract: The self-consisted dynamics of a dislocation ensemble in the elastic field of the disclination located at the interface of two half-spaces has been considered for two cases, namely, for half-spaces with different densities of mobile dislocations and for a bicrystal where dislocations are absent in one half-space. The elastic energy $W$ of the disclination screened by the dislocation ensemble has been calculated for the rectangular zone centered relative to the disclination. It has been shown that $W$ increases as $\sim\sqrt{R}$ ($R$ is the transverse size of the zone in the plastically deformed half-space).

Received: 08.02.2012
Accepted: 16.04.2012

 English version: Physics of the Solid State, 2012, 54:11, 2277–2281

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