Structure and Microhardness of Cu-Ta Joints Produced by Explosive Welding

Figure 9

Microhardness of the intermediate layer and its adjacent regions after explosive welding of copper and tantalum plates and subsequent heating of the weld at different temperatures. (1) without heat treatment, (2) heating to 200°C, (3) 300°C, (4) 500°C, (5) 600°C, (6) 800°C, and (7) 900°C.