The effect of the interface on the interaction of an interior edge dislocation with an elliptical inhomogeneity

. The image glide force on an edge dislocation inside an elliptic inhomo¬geneity is investigated using previously established general solutions to the plane elasticity problems of the elastic field produced by an internal line singularity. The matrix-inhomo¬geneity interface is assumed either perfectly adhering or slipping. The results for the two kinds of boundary are compared by means of equiforce contour plots. It is found that for an adhering interface the force field is qualitatively insensitive to the inhomogeneity shape. On the contrary, for a slipping interface shape effects are essential, ranging from a "matrix shielding" effect, to the appearance of new stable equilibrium loci.