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In this paper we analyze mesodefects accumulating during plastic deformation on the
faceted high angle grain boundaries. It is shown that the system of mesodefects can be
represented as a set of linear mesodefects of the rotational type (junction disclinations), and
planar mesodefects of the shear type (uniformly distributed dislocations with Burgers vector
lying in the plane of the facet). The process of formation of broken dislocation boundaries in the
elastic fields of various configurations of the abovementioned mesodefects is studied within the
framework of computer simulation.
Keywords: fragmentation; broken dislocation boundaries; mesodefects; computer simulation. |
full paper (pdf, 1040 Kb)