{1012}twin–twin intersection-induced lattice rotation and dynamic recrystallization in Mg–6Al–3Sn–2Zn alloy  

作　　者：Bin-Jiang Lv Sen Wang Fu-Hao Gao Ning Cui Yi-Nan Li Tie-Wei Xu Feng Guo 

机构地区：[1]School of Mechanical and Automotive Engineering,Qingdao University of Technology,266520,China [2]Key Lab of industrial Fluid Energy Conservation and Pollution Control,Qingdao University of Technology,266520,China

出　　处：《Journal of Magnesium and Alloys》2024年第4期1529-1539,共11页镁合金学报（英文）

基　　金：support from the Key Technology Research and Development Program of Shandong Province(Project No.2019GGX102060).

摘　　要：This study investigated the formation mechanism of new grains due to twin–twin intersections in a coarse-grained Mg–6Al–3Sn–2Zn alloy during different strain rates of an isothermal compression.The results of electron backscattered diffraction investigations showed that the activated twins were primarily{1012}tension twins,and 60°<1010>boundaries formed due to twin–twin intersections under different strain rates.Isolated twin variants with 60°<1010>boundaries transformed into new grains through lattice rotations at a low strain rate(0.01 s^(−1)).At a high strain rate(10 s^(−1)),the regions surrounded by subgrain boundaries through high-density dislocation arrangement and the 60°<1010>boundaries transformed into new grains via dynamic recrystallization.

关 键 词：Mg alloy Twin-twin intersection Lattice rotation Dynamic recrystallization 

分 类 号：TG146.22[一般工业技术—材料科学与工程]