Equal channel angular deformation (ECAD) of As-Cast AM60 magnesium alloy

Abstract

As-cast AM60 magnesium alloy ingot with grains coarser than those of as-extruded AZ series is more liable to produce cracks under equal channel angular deformation (ECAD) with severe shear strain. A feasible scheme of ECAD for as-cast AM60 magnesium alloy ingot was proposed in this paper. The tests were conducted on Instron machine with hydraulic back-force machine. Through analysing load vs displacement curves, the effects of ECAD processing conditions on deformability and microstructure of as-cast magnesium AM60 billets were discussed. During testing, the back-force employment was helpful to keep the ECAD processing more stable. And with back-force, it was observed that the numbers of ECAD..