Development and study of combined severe plastic deformation process

Abstract

To increase the level of accumulated deformations during angular pressing, known routes are used, based on inter-transitional rotation of the workpiece at a certain angle before the next installation in a stamp. With the advent of relatively new methods for obtaining of bulk ultrafine-grained materials, the possibility of combining angular pressing and its rotation in accordance with a given route in one pass of the workpiece through intersecting channels of the die in accordance with a given route is studied, for which a technological process is developed and studied, in which equal-channel angular pressing and screw extrusion are combined. The computer simulation of the proposed process made it possible to reveal the features of the kinematics of the flow in the channels of the die, to predict the values of the contact pressure, power parameters and the resulting stresses and accumulated deformations in the volume of the pressed billet.