Kinking-facilitated nano-crystallization in a shock compressed Mg-1Zn alloy  

作　　者：Yuxuan Liu Yangxin Li Qingchun Zhu Huan Zhang Xixi Qi Duofei Zheng Yunliang Li Dezhi Zhang Xiaoqin Zeng 

机构地区：[1]National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite,Shanghai Jiao Tong University,200240 Shanghai,China [2]Northwest Institute of Nuclear Technology,Xi’an,Shanxi,710024,China

出　　处：《Journal of Magnesium and Alloys》2023年第4期1162-1169,共8页镁合金学报（英文）

基　　金：supported by National Natural Science Foundation of China(No.51701121,No.51825101);Shanghai Sailing Program(No.17YF1408800);Laboratory of Intense Dynamic Loading and Effect Foundation of China(No.IDEL1908);Startup Fund for Youngman Research at SJTU(No.18×100040022);Science and Technology Commission of Shanghai Municipality(No.18511109302).

摘　　要：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.

关 键 词：Magnesium alloys KINKING TWINNING Dynamic recrystallization NANOCRYSTALLIZATION 

分 类 号：TG146.22[一般工业技术—材料科学与工程]