Co-zone (1012) twin interaction in magnesium single crystal

Abstract

Using in situ optical microscopy, electron backscatter diffraction analysis, and atomistic simulations, we studied co-zone (1012) twin interaction in magnesium single crystal under compression-tension along the [1010] direction. Two co-zone twins are activated and interact with each other, resulting in two types of tilt boundaries that have habit planes (0001) and (1010) and prevent twinacross- twin transmission but facilitate the propagation of a basal slip band. Upon strain reversal, the unfavorable dissociation of dislocations in the formed tilt boundaries hinder de-twinning. © 2013 The Author(s). Published by Taylor & Francis.