Analysis on the mechanism of plastic deformation in undulate bonding zone during explosive welding process

Explosive welding process is characterized in large plastic deformation and undulate interface in bonding zone. These conditions are essential for achieving good metallurgical bonding but its mechanism is not clear. A continuum model was established by introducing Newton stress formula into the elastic-plastic model to describe the deformation behavior of material in bonding zone. Based on the model, the mechanism of plastic deformation and the influence of detonation velocity on plastic deformation were analyzed and compared with experiments. The results show that large amount of plastic deformation is produced in the bonding zone and concentrating to the undulate interface; the width of plastic deformation zone decreases and deformation increases along the detonation direction; the interface deformation zone expands and plastic deformation increases with the increase of detonation velocity.