Effect of die channel angle, friction and back pressure in the equal channel angular pressing using 3D finite element simulation

In this study, deformation behavior of commercial pure aluminum in the equal channel angular pressing (ECAP) is analyzed successfully using three dimensional (3D) simulation by finite element methods (FEM). The investigations include the effects of various die channel angles, low-friction and high-friction conditions and the application of the back punch pressure. It is observed that the level of the strain and homogeneity of strain distribution increase with decreasing the die channel angle or increasing the friction coefficient or imposing the back punch pressure in the outlet channel. Also, increasing the magnitude of the strain causes high punch pressure and higher press pressure for processing should be applied.