The local deformation behavior and dynamic recrystallization of a shock compressed Mg-1Zn 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.

通过 EBSD 和 TEM 研究了冲击压缩 Mg-1Zn 合金的局部变形行为和动态再结晶。由于在高应变率变形期间位错滑移和孪晶被局部抑制，因此激活了更灵活的扭结变形以调整局部取向并促进扭结内的滑移和孪晶。同时，由于散热缓慢导致局部温度升高，扭结带演化为具有再结晶纳米晶粒的变形带。这一发现为镁合金和其他各向异性金属材料中扭结促进的纳米晶化提供了新的视角。