An analysis of the shear zone for metals deformed by equal-channel angular processing

Four fundamental models, based on slip-line theory, are compared to experimental results obtained from deforming scribed billets in a single pass of equal-channel angular pressing (ECAP). Two ECAP die configurations, having sharp and round corners, are used to determine the experimental flow-line fields for Pb, pure Cu and pure Al billets. Two different types of deformation behavior are observed when using the die with a sharp-corner: (a) for...