Hot deformation activation energy of a 5E83 alloy prepared with centrifugal casting

Abstract

Abstract 5E83 aluminum pipe was produced withy centrifugal casting, the hot deformation were performed on the inner, middle, and outer layers of the pipe, the hot deformation activation energy Q were calculated. The results revealed that the hot deformation flow stresses exhibited increase tendency along with the inner, middle, and outer layer, the hot deformation activation energy Q increased from 164.5MPa for the inner layer to 197.6 and 214.9MPa for the middle and the outer layer respectively. Along with the layer of inner, middle, and outer, the solid solution level increased and the grain size decreased. Correspondingly, the solid solution hardening became stronger and the grain refinement mechanism was enhanced, resulting in the increased hot deformation flow stresses and activation energy Q.