Single crystals with a <111> orientation were dynamically recrystallized during steady-state plastic deformation at 673K. It was shown that the localization of single dislocation glide played an important role in initiating continuous dynamic recrystallization. Bands of elongated rectangular sub-grains were formed, in areas of localized deformation, at low strains. During subsequent deformation, uniform multiple slip occurred and led to the formation of equiaxed sub-grains between bands of elongated sub-grains. Further plastic deformation led to a continuous increase in the misorientation of sub-grain boundaries, and their eventual conversion into high-angle boundaries.

Dislocation Glide and Dynamic Recrystallization in LiF Single Crystals. O.Sitdikov, R.Kaibyshev: Materials Science and Engineering A, 2002, 328[1-2], 147-55