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Correlation effects in an ensemble of edge dislocations

  • Defects and Impurity Centers, Dislocations, and Physics of Strength
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Abstract

A kinetic theory of correlation interaction in an ensemble of edge dislocations is developed taking into account the effects of the fluctuation dynamics of dislocations. Equations of evolution of a dislocation ensemble are derived including the correlation interaction between dislocations. A criterion of instability of a uniform dislocation distribution is established. It is shown that the nucleation of spatially nonhomogeneous dislocation structures due to correlation instability is mainly determined by the specific features of the elastic interaction between dislocations and depends only slightly on the mechanism of dislocation kinetics. The theory is applied to calculating the dispersion of an internal stress field.

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Authors and Affiliations

  1. Blagonravov Institute of Engineering Science, Nizhni Novgorod Branch, Russian Academy of Sciences, ul. Belinskogo 85, Nizhni Novgorod, 603024, Russia

    G. F. Sarafanov

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  1. G. F. Sarafanov
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Correspondence to G. F. Sarafanov.

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Original Russian Text © G.F. Sarafanov, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 10, pp. 1793–1799.

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Sarafanov, G.F. Correlation effects in an ensemble of edge dislocations. Phys. Solid State 50, 1868–1874 (2008). https://doi.org/10.1134/S1063783408100144

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  • DOI: https://doi.org/10.1134/S1063783408100144

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