Modeling and production of high strength Al strips by equal channel multi angular pressing method

Equal channel multi angular pressing (ECMAP) process is the efficient method to enhance the productivity of ultra-fine grained (UFG) materials, by increasing process continuity and as a result decreasing process required time. Comparing repetitive ECAP method, in the same period, the number of passes can be done by ECMAP. In this article, ECMAP of AL strips in two typical annealed and as received conditions studied, and route C was selected as multi pressing route. Values of equivalent plastic strain (PEEQ) and micro-hardness in the cross section of ECMAPed strips obtained both by FE simulations and practical tests, correspondingly. These values also used for obtaining the inhomogeneity of produced ECMAPed strips. Furthermore, mechanical property for both as received and annealed strips before and after pressing, studied experimentally. Also, load-displacement curve during ECMAP process obtained by FEM. For FEM results validation, PEEQ calculated by the analytical method, too. Results show that there is good conformity between FE, analytical and practical results.