E. N. Borodin

TL;DR: In this article, the behavior of the yield strength of metals is considered from viewpoint of dynamics as a function of the limiting stress and the characteristic time of stress relaxation, and the analytical expressions of the relaxation time are obtained from the model of dislocation slip and grain boundary sliding, which are calculated with the help of both the dislocation model and the integral criterion of plasticity.

TL;DR: In this article, a new approach for dynamic recrystallization coupling dislocation density and the size of grain formed in metal is proposed, which is applicable for the whole range of grain sizes.

TL;DR: The sharp yield point phenomenon has been analyzed in terms of the theory of dislocations and phenomenological integrated criteria of plasticity as mentioned in this paper, and it has been shown that the characteristic relaxation times used in these criteria, regardless of the applied model of the plasticity, reflect essential properties of the very deformation process itself.

TL;DR: In this paper, a structural model of the mechanical twinning applicable for description of severe plastic deformation in 2D formulation is proposed, together with the dislocation plasticity model, applied to modeling of the dynamical axis-symmetric Taylor tests with copper samples.

TL;DR: In this paper, the authors considered grain boundary sliding as a dominant mechanism of plasticity in nanocrystalline metals and proposed a mechanical model for barrier resistance to sliding, which is based on molecular dynamics simulation data.