1-passのECAPによる純亜鉛単結晶の変形挙動

抄録

A single pass of equal channel angular pressing (ECAP) at 223 K was applied to six kinds of Zn bulk single crystals with different crystal orientations, and the deformation behavior was investigated, such as grain refinement and texture development. Zn bulk single crystals with several millimeters can be divided into a number of grains with several tens micron meters by a single pass of ECAP. Also, texture formed by activation of basal and second order pyramidal slips. Increasing twin boundaries by double twinning, and occurrences of recrystallization at the twin boundaries are required for grain refinement before passing through the theoretical shear plane in the ECAP die.