The effect of rolling orientation on the brittle‐ductile transition in polycarbonate fracture

Abstract

AbstractThe effect of orientation on the brittle‐ductile transition in rolled polycarbonate was examined. It has been believed that the brittle‐ductile transition is governed by the residual stress at low reduction and the orientation at high reduction. But, our experimental results revealed that the brittle‐ductile transition is caused by neither the residual stress nor orientation. It is proposed that the brittle‐ductile transition may be ascribed to the morphological change which is produced during plastic deformation on rolling.