A detailed investigation was made of the transient response induced by an edge dislocation near to a circular elastic inclusion with simultaneous interface slip and diffusion. A rigorous solution to the interaction problem was derived in series form. As the time approached infinity, the present solution just recovered the classical one derived by Srolovitz et al. (1984) for fully relaxed boundary conditions. In addition, it was observed that the edge dislocation would induce a uniform rigid-body rotation in the inclusion as the time approached infinity. When the dislocation was far away from the inclusion, simple asymptotic expressions of the glide and climb forces on the dislocation were also obtained. Furthermore, five extreme cases for the imperfect interface were discussed; in particular, approximate closed-form expressions were derived for the decaying internal stress field within the inclusion and the image force on the dislocation for long-range stress relaxations when the interface diffusion occurred much faster than the interface slip, and vice versa.

Interaction between an Edge Dislocation and a Circular Inclusion with Interface Slip and Diffusion. X.Wang, E.Pan: Acta Materialia, 2011, 59[2], 797-804