It was noted that tangential interaction forces which act between superlattice partial dislocations in L12 ordered alloys decisively affect cross-slip of the dislocations and were fundamental in explaining the anomalous dependence of the flow stress with increasing temperature. The complex nature of the interaction forces between ½<111> super-partials in the B2 structure was analysed here and was compared with ½<101> super-partials in the L12 structure; for all orientations of the dislocation lines on the {101}, {121} and {111}, {010} glide planes, respectively. Stable dissociation of the screw dislocations occurred in B2 and L12 on the {121} and {010} planes, respectively. In both cases, they were inclined to the {101} and {111} primary slip planes. The stable dissociation plane of the edge dislocations was again perpendicular to the Burgers vector in both cases.

Non-Radial Interaction Forces between Super-Partials in B2 and L12 Ordered Alloys. V.Paidar: Philosophical Magazine A, 2000, 80[12], 2957-70