Abstract

The dislocation motion induced by external stress is considered using the model of individual atom migration within the dislocation core. Equations are derived which permit calculation of dislocation velocities in perfect crystals from the value of the energy barrier which atoms must overcome. Using the known average distance between point obstacles (the regions of dislocation pinning), analogous calculations are possible for real crystals. The velocities calculated agree with the experimental results available for semiconducting and alkali halide crystals. [Russian Text Ignored].

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