Abstract

A model relating the pronounced effect of mobile impurities on the processes of plastic deformation in crystals to the dynamic aging of dislocations is proposed. The model is based on the concept of internal stresses depending individually on the age of dislocations due to the difference in the impurity environment. The concentration dependence of the impurity contribution to the hardening of materials is calculated. The theory is illustrated by the experimental data for a GeSi solid solution.

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