School of Mechanical Engineering of Science and Technology Beijing Xueyuan Road District 100083;
Beijing Key Laboratory of Lightweight Metal Forming 100083;
College of Nuclear Equipment and Nuclear Engineering University 264005;
Shunde Graduate School of University of Science and Technology Beijing;
AZ80 magnesium alloy; Internal state variable model; Microstructure evolution; Dynamic recrystallization; Hot working process; Finite element simulation;