In order to investigate the fundamental aspects of damage evolution under irradiation, computer simulations were made of the interactions between dislocations and a point defect such as a self-interstitial atom, vacancy or interstitial cluster. It was found that a crowdion with its axis parallel to the Burgers vector of an edge dislocation interacted more strongly than did those with other axis orientations. The same tendency was seen in the case of the dumb-bell. The capture range within which self-interstitial atoms were trapped by an edge dislocation was less than that for Ni, and that for vacancies was much smaller than that for self-interstitial atoms. It was therefore suggested that the bias factor in Fe was smaller than that in Ni.

Computer Simulation of Defects Interacting with a Dislocation in Fe and Ni. E.Kuramoto, K.Ohsawa, T.Tsutsumi: Journal of Nuclear Materials, 2000, 283-287, 778-83