Atomic-scale details of the interaction of a 1/3<11▪0>(00▪1) edge dislocation, which dissociated in the basal plane, with 4 typical vacancy and self-interstitial atom clusters created by displacement cascades in α-Zr were investigated by computer modelling. A triangular cluster of self-interstitial atoms lying within a basal atomic plane adjacent to the dislocation glide plane was not absorbed by the dislocation but was pushed along by the leading partial. A 3D self-interstitial atoms cluster lying across the glide plane was completely absorbed by the dislocation by creation of 2 super-jogs. The dislocation also climbed by interaction with a prismatic vacancy cluster, but only half of the vacancies were absorbed in this case. For a cluster formed from a basal platelet of vacancies, the dislocation experiences a glide resistance, but both the line and cluster were fully restored after breakaway.

Interaction of 1/3<11▪0>(00▪1) Edge Dislocation with Point Defect Clusters Created in Displacement Cascades in α-Zirconium. R.E.Voskoboinikov, Y.N.Osetsky, D.J.Bacon: Materials Science and Engineering A, 2005, 400-401, 49-53