An investigation was made of the problem of an edge dislocation interacting with a thickly-coated circular inclusion. Both interface slip and diffusion occurred on the inclusion/coating and coating/matrix interfaces. It was further assumed that all of these stress-relaxation processes on the two interfaces had come to an end. A closed-form solution to the problem was derived. It was observed that: (i) the dislocation will induce an internal uniform hydrostatic stress field within the three-phase circular inclusion; (ii) the dislocation will induce the same uniform rigid body rotation within the inclusion and within the coating layer; and (iii) when a compliant coating layer was thick enough, there exists no climb repulsion region. In the second part, an exact solution to the problem of an edge dislocation inside a circular inclusion with a fully relaxed interface was obtained. It was observed that the climb force on the dislocation tended to keep it at the center of the inclusion.

Diffusionally Modified Elastic Interaction of Edge Dislocations with Circular Inclusions. X.Wang: Acta Mechanica, 2011, 222[3-4], 287-94