Monotonic torsion at 673K led to a stress–strain curve which exhibited a peak, and a steady-state stress, which was typically associated with dynamic recrystallization. Cyclic deformation suppressed dynamic recrystallization, and restoration was dominated by dynamic recovery. Successive strain cycles involved the breakdown and restructuring of dislocation arrangements which were typical of dynamic recovery; causing a decrease in the accumulated internal energy. These phenomena were similar to those caused by strain-path changes under cold working conditions.

The Effect of Strain Path on the Mechanical Behavior and Dislocation Arrangements in the Hot Working of Copper. P.Pinheiro, W.A.Monteiro, R.Barbosa, P.R.Cetlin: Materials Science and Engineering A, 2004, 368[1-2], 280-5