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Analysis of the parameters of a submicron dislocation structure in metals subjected to severe plastic deformation

  • Defects, Dislocations, and Physics of Strength
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Abstract

Equations of dislocation kinetics are used to quantitatively compare the mechanisms of formation and evolution (with deformation) of cellular dislocation structures at moderate strains and of submicron block dislocation structures at high plastic strains. In both cases, the formation of nonuniform dislocation structures is a result of dislocation self-organization, more specifically, the self-organization of statistically random dislocations during the formation of cellular structures and the self-organization of geometrically necessary dislocations (which appear due to the nonuniform character of plastic deformation on the micron scale) during the formation of block structures.

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Authors and Affiliations

  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    G. A. Malygin

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__________

Translated from Fizika Tverdogo Tela, Vol. 46, No. 11, 2004, pp. 1968–1974.

Original Russian Text Copyright © 2004 by Malygin.

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Malygin, G.A. Analysis of the parameters of a submicron dislocation structure in metals subjected to severe plastic deformation. Phys. Solid State 46, 2035–2041 (2004). https://doi.org/10.1134/1.1825546

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  • DOI: https://doi.org/10.1134/1.1825546

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