Study of pressure effect on the kinetics of deformation induced grain growth in two-dimensional crystal with nanosized grains

E.A. Korznikova1
1IMSP RAS
Abstract
Molecular dynamics simulation of shear deformation of two dimensional polycrystal subjected to three different hydrostatic pressure levels is carried out. Grain growth during plastic deformation is observed in all cases. No definite dependence of grain growth kinetics on the hydrostatic pressure level is found. On the other hand, reduction of the pressure level makes dominant the grain growth mechanism by mutual grain rotation and coalescence. A moderate monotonous decrease of pressure observed during deformation is explained by the reduction of the grain boundary density and growth of atomic order in the grain boundaries.
Accepted: 02 December 2013
Views: 60   Downloads: 8
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