National Engineering Research Center of Light Alloy Net Forming&State Key Laboratory of Metal Matrix Composites;
Shanghai Jiao Tong University;
Shanghai 200240;
China;
Powder Metallurgy Research Institute;
Central South University;
Changsha 410083;
China;
Magnesium alloy; Strength-ductility trade-off; Bimodal structure; Back-stress; Chain-like intragranular nano-precipitates;