Steady-state characteristics of fcc pure metals processed by severe plastic deformation: experiments and modelling

A series of experimental studies are carried out to investigate the steady-state microstructures and mechanical properties of Cu, Ni, and Al obtained by equal-channel angular pressing (ECAP) at homologous temperatures. Under 0.32Tm the steady-state grain sizes ds of the three metals are below 1 μm, and dominated by dynamic recovery mechanism. Discontinuous dynamic recrystallization (DDRX) occurs in Cu and Ni processed by ECAP at 0.4Tm. The...