Three-dimensional morphology of microbands in a cold-rolled steel

A three-dimensional (3-D) reconstruction of a typical microband in cold-rolled interstitial-free steel was generated by 3-D electron backscatter diffraction. The microband contained irregular curved surfaces that reconcile findings that microbands appear straight and aligned along slip planes when viewed in normal direction–rolling direction sections but are wavy in transverse direction–rolling direction sections. Three slip planes were found within the angular range of the curved surface of the microband, which indicates that multiple planes is operative during deformation.