A study was made of the ability of dislocations to glide in one plane relative to another. It was noted that, according to the closest-packing criterion, the first type of prismatic plane appeared to be favoured. Line-energy calculations, which were performed under anisotropic elasticity conditions, did not permit the detection of preferential activation of one of the glide planes. The crystallographic structures of basal and first-type prismatic planes, the core structures of dislocations, and dissociation reactions were investigated, and configurations were proposed for stacking faults on prismatic planes.

M.Audurier, J.L.Demenet, J.Rabier: Philosophical Magazine A, 1998, 77[4], 843-59