This article is cited in 5 papers

Effect of deformation-induced vacancies on diffusion properties of nonequilibrium grain boundaries

V. N. Pereverzentsev, A. S. Pupynin

A. A. Blagonravov Mechanical Engineering Institute, Academy of Sciences of the USSR, Nizhny Novgorod Branch

Abstract: The kinetics of variation of the diffusion properties of nonequilibrium grain boundaries (GBs) related to the absorption of vacancies generated in the course of plastic deformation of a material has been studied. It is demonstrated that the sink of the deformation-induced vacancies to GBs can increase the GB diffusion coefficient by one to two orders of magnitude. An approximate analytical expression is obtained that describes the dependence of the coefficient of diffusion along nonequilibrium GBs on the strain rate and value of strain.

Received: 11.10.2010

 English version: Technical Physics Letters, 2011, 37:3, 287–290

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