The interaction between dislocation loops of interstitial nature with ½<111> and <100> Burgers vectors and point defects in Fe was studied molecular dynamics. Comparative calculations were carried out using two interatomic potentials for pure Fe (Ackland et alia and Dudarev et alia). The results of this study yielded the range and energy of the interaction as functions of size and mutual position of defects. The applied potentials predicted somewhat different strain field structure for <100> loops and therefore different lengths of interaction. However, both potentials suggested that, contrary to common belief, the distance of cluster-defect interaction within the glide prism of a ½<111> cluster was significantly longer than that of a <100> cluster of similar size, in spite of the longer Burgers vector in the latter case.

Interaction of <100> and ½<111> Dislocation Loops with Point Defects in Ferritic Alloys. D.Terentyev, L.Malerba: Journal of Nuclear Materials, 2008, 377[1], 141-6