The influence of Cu on the microstructure and properties of TC4/Q345 high-entropy joints by laser welding
FeCoNiCrCu high-entropy alloy (HEA) and Cu foils were utilized as the intermediate layer to conduct laser welding of TC4 titanium alloy and Q345 steel.Welding is performed by adding single HEA and Cu/HEA double foils as interlayer respectively.We conducted in-depth studies on the microstructure and mechanical properties of the joint by stereomicros