Kinetics of plastic deformation of impurity covalent crystals

The specific features of dynamic dislocation aging in processes of deformation of covalent crystals have been investigated. For this purpose, there has developed a theory combining the synergetic model of the evolution of a dislocation ensemble in a perfect crystal with the model describing the interaction of individual dislocations with the impurity subsystem of the crystal. It has been noted that there is a difference between the dynamic dislocation aging of covalent materials and the well-studied behavior of alloys with a face-centered cubic crystal lattice. The qualitative results deepen and illustrate the concept of individual aging in an ensemble of different-age dislocations. Three modes of plastic flow experimentally observed in doped semiconductor materials have been substantiated.