The problem of the interaction between several parallel edge dislocations and a circular nanosized hole with surface stress was investigated. The explicit solutions of stress fields and image forces exerted on edge dislocations were obtained by the use of the complex variable method. The influence of surface properties and the size of the hole on the glide/climb force was discussed. The results showed that different surface properties may cause the glide/climb force to either increase or decrease, which implied that there existed a local softening or hardening at the surface of the hole for considering the surface effects. The effect of a nanosized hole and its surface properties on the image forces between two dislocations was also significant.

Interaction between Edge Dislocations and a Circular Hole with Surface Stress. Q.H.Fang, B.Li, Y.W.Liu: Physica Status Solidi B, 2007, 244[7], 2576-88