Metallurgical effect occurred in pure iron subjected to explosive loading

The evolved microstructure resulting from the high strain rate deformation of pure iron has been studied in explosive-filled cylinders and explosively formed projectiles (EFPs). The results show that dynamic recovery and the dynamic recrystallization have occurred in pure iron during plastic deformation, which are attributed to the adiabatic temperature rise due to shock wave and the plastic deformation work. The softening effect of dynamic recovery and dynamic recrystallization can enhance the plastic deformability of pure iron.