A model for dynamic recovery of bcc structure

摘要

GENERALLY the following two processes will take place simultaneously during hot deformation: one is work hardening caused by the increase of dislocation density on account of slip deformation; the other is softening caused by the process of recovery and recrystallization. The overall effect of the development of the two contrary processes is influenced by deformation temperature, rate and quantities. Among them temperature controls the rate of self-diffusion, which affects the proceeding of recoveryand recrystallization as well. During recovery the dislocation density is mainly determined by deformation rate ( ε ) and strain quantities (ε).