Effect of the Deformation Axis Orientation on the Strength of Dislocation Junctions in FCC Single Crystals

Abstract

The effect of the deformation axis orientation on the length and the strength of dislocation junctions in fcc single crystals has been studied within the model of interdislocation contact interactions, which includes the formation of a dislocation reaction and a change in a dislocation configuration under stress in three-dimensional space. The probabilities of failure of a dislocation junction under stress, the formation of indestructible dislocation junctions, and the formation of long strength dislocation barriers capable of limiting the shear zone have been determined.