Kinking-facilitated nano-crystallization in a shock compressed Mg-1Zn alloy
Yuxuan Liu, Yangxin Li, Yangxin Li, Qingchun Zhu, Huan Zhang, Xixi Qi, Duofei Zheng, Yunliang Li, Yunliang Li, Dezhi Zhang, Xiaoqin Zeng
Abstract
The local deformation behavior and dynamic recrystallization of a shock compressed Mg-1 Zn alloy was investigated through EBSD and TEM. Since dislocation slipping and twinning were locally suppressed during high strain-rate deformation, a more flexible kinking deformation was activated to adjusted local orientation and facilitate slipping and twinning within the kinks. Meanwhile, due to the slow heat dissipation that resulted in a local temperature elevating, the kink bands were evolved into deformation bands with recrystallized nano-grains. Such a finding provides a new perspective for kinking-facilitated nanocrystallization in Mg alloys and other anisotropic metallic materials.