Title: Dislocation-kinetic approach to the analysis of deformation mechanisms of metals and alloys

Authors: Igor V. Alexandrov; Roza G. Chembarisova

Addresses: Ufa State Aviation Technical University, 12, K. Marx, Ufa, Russia. ' Department of Physics, Ufa State Aviation Technical University, 12, K. Marx, Ufa, Russia

Abstract: This paper presents the results of the development and application of a dislocation-kinetic approach to the analysis of strength and ductility in metals and alloys. The influence of the temperature-strain rate conditions of deformation on the character of dislocation processes, taking place in some pure metals and alloys, has been investigated here as well. Special attention has been given to the analysis of the effect of grain boundaries, twins, impurity atoms and a non-equilibrium state of the grain boundaries on the activation of one or another deformation mechanisms in bulk ultrafine-grained metallic materials, obtained by the severe plastic deformation method.

Keywords: dislocation-kinetic approach; modelling; strength; deformation mechanisms; ageing; twins; segregations; copper; commercial pure titanium; aluminium alloys; temperature; strain rate; bulk ultrafine-grained materials; severe plastic deformation; kinetics.

DOI: 10.1504/IJMMP.2012.047499

International Journal of Microstructure and Materials Properties, 2012 Vol.7 No.2/3, pp.187 - 204

Available online: 24 Jun 2012 *

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