The effect of contact pressure on the process of equichannel angular extrusion of materials: Part I. extrusion of samples without coatings

摘要

The effect of contact friction on the shapes of aluminum alloy specimens and distribution of deformation in the material during equichannel angular extrusion have been studied. It is demonstrated that a lubricating material effectively reduces the total force of compaction, yet the pattern of plastic flow remains non-homogenous because the design features of press tools used to implement this method of extrusion determine the flow.