Wuhan National Laboratory for Optoelectronics;
Huazhong University of Science and Technology;
Wuhan 430074;
China;
State Key Laboratory of Material Processing and Die&Mould Technology;
School of Material Science and Engineering;
Huazhong University of Science and Technology;
Wuhan 430074;
China;
XI’AN Space Engine Company Limited;
Xi’an;
710100;
China;
Directed energy deposition; Additive manufacturing; Bimetal; Interfacial characteristics; Crack;