State Key Laboratory for Powder Metallurgy;
Powder Metallurgy Research Institute;
Central South University;
Changsha 410083;
China;
State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization;
Jinchang 737100;
China;
Yuanmeng Precision Technology(Shenzhen)Institute;
Shenzhen 518063;
China;
Nickel-based; superalloy; Selective; laser; melting; Microstructure; Defects; Annealing; twin;