ABSTRACT
Dislocation cutting processes in NaCl and MgO single crystals were investigated by both high resolution slip-line investigations and in situ deformation tests inside the high voltage electron microscope. Forest dislocations on oblique {110} 〈110〉 slip planes are highly capable of inducing cross-glide processes over large distances and of immobilizing gliding dislocations. The evaluations yield the forest dislocation density, the density of cross-glide processes, and the slip path of the dislocations gliding through the forest. Dislocation intersection is concluded to result mainly in an athermal contribution to the flow stress.
