The effect of ram speed on mechanical and thermal properties in ECAE process simulation

Abstract

Mechanical and thermal properties during equal channel angular extrusion (ECAE) process are analyzed by finite volume method simulation. Chronological effective strain behavior during ECAE was visualized by 3-dimensional simulation. Local instability during ECAE was detected by the detailed analyses (named as 'center-divided points' and 'cutrarea points'), which are indicative of effective strain, effective stress, effective strain rate and temperature. Different ram speed caused different heat dissipation history and accordingly different mechanical and thermal properties during ECAE. In this simulation work, most of deformation occurred at the slip plane agreeing with theoretical prediction.