  The kinetics of dislocations is studied with computer simulation at loadings
of different intensity. It is established that the dislocations have a few
different structural states. The dislocations "with the micropore" play
important role in the formation of large curved boundaries, and, as a
consequence, in the formation of fine grains. Alternation of elastic and
inelastic strain stages is established too. At shear loading, in view of
special kinetics, the system would have to accumulate the whole set of
dislocations leading to the formation of new boundaries and fine grains.
