Dislocation subsystem stability in f.c.c. materials under intensive loading

Dislocation kinetics in f.c.c. crystals being deformed under conditions of (1) constant excessive stress τdyn, (2) constant applied deforming stress τ and (3) constant load was investigated. It was shown that there are two stationary states of dislocation density ρs(1) and ρs(2) (for single crystals ρs(1)=0). The domain between these two stationary states corresponds to dynamic softening of deforming crystal. The last region corresponds to strain hardening.