Simulation of Effective Stress and Temperature Field of the Die and Workpiece during ECAP of Pure Titanium at Different Ram Speeds by Finite Volume Method

Abstract

The finite volume simulation of equal channel angular pressing (ECAP) was realized using 3D commercial code MSC.SuperForge. The knowledge of stress and temperature during ECAP process is very important for forming a hard-to-deform as Ti under optimal thermo-mechanical conditions to achieve desired mechanical properties. In this work, the strain, stress and temperature fields of both the die and workpiece are studied. The resulted stress and temperature distributions showed maximal values in the region of corner and channel angles of the die. Also, the temperature increased during the processing, as a consequence of the deformation. The heating of the deformation system was calculated and analyzed for three different ram speeds (v = 1, 10 and 20 mm/s) at 400 °C. Keywords: ECAP, SPD, FEM, FVM, heat transfer analysis, titanium