Principals of indirect equal channel angular drawing for processing of ultrafine grained materials

Abstract

In this paper indirect ECA drawing method was supposed to be feasible for application. This method will ensure same deformation degree as that in ECAP while keep the size of the billet unchanged so that multiple processing can be done. With this method, materials with both rectangular and round section can be processed and there is no limit to the length of the materials. Die configuration was set up and the equations for relationship among die parameters, billet parameters and its properties, drawing forces and applying pressures are given.