Effect of heat treatment on microstucture and properties of explosive welding clad plate of TA1/Q345

　The composite plate made by explosion welding technology generally has high residual stress and bed plasticity due to the explosion reinforcement. The heat treatment can play a part of eliminating stress and recovering property. In this study, TA1/Q345 clad plate made by explosive welding was annealed at different temperatures. The microstructure, micro-hardness, and tensile, shear, and bending properties were analyzed after anneal. The result shows that there is fibrous structure in the bonding zone and the plastic deformation is severe, the grain growth and fibrous structure dribbles away with the temperature increasing. Micro-hardness in the interface is bigger than it on the both sides. Tensile and shear strength reduced with the temperature of heat treatment increasing. The propel anneal temperature for TA1/Q345 clad plate is 600 ℃