Interface and Properties of Explosive Welded TA1/Al Clad Tube

Abstract:

Aluminum tube and TA1 tube were cladded by explosive welding. The morphology and phases of the bonding interface were studied by SEM and XRD, respectively. The bonding strength and the microhardness distribution of the transition region were measured. The axial compression test and the radial flattening test were also carried out. The results indicate that the linear and the wavy bonding interface coexist. Meanwhile, obvious element diffusion occurs in the interfacial zone. In addition, the bonding strength can get no less than the shear strength of Al. No separation happens after the compression test and flattening test, indicating that the clad tube has excellent bonding properties and can endure large plastic deformation.

Key words:explosive welding; TA1/Al clad tube; interface; properties