Study On The Performance Of Titanium, Aluminum And Steel Explosive Composite Plates

      Aluminum is widely used in ship building industry for its low density, high specific strength, good plasticity and toughness, good thermal and electrical conductivity, and strong corrosion resistance. With high strength and ductility, the composite material composed of steel possesses both physical and chemical properties and good comprehensive properties. Therefore, it is a new structural material with wide applications.

      Due to the poor weldability of aluminum and aluminum alloy and steel, the use of fusion welding will inevitably produce intermetallic compounds, which will reduce the interface performance. Although the performance of pressure welding is better, it needs special equipment and strict process. As a special new processing technology, explosive welding provides the possibility to realize the welding between aluminum and steel. Explosive welding is a kind of metal welding technology using explosives as energy. It is characterized by giving full play to and utilizing the physical and mechanical properties of component materials and other special uses to performance its advantages to meet the needs of different occasions.

      This paper introduces a kind of explosive welded composite board for marine composite board made by aluminum, titanium or steel.

      Explosive welding is a special welding technology which uses explosives as energy. In engineering applications, parallel installation method and angle installation method are often used for explosive welding. This paper analyzes the parallel installation method in explosive welding.

      After adding pure aluminum 1060 and titanium plate TA1 into the transition layer, the bonding quality of the composite plate is much better and the bonding rate of the final product reaches 100%. The shear strength of aluminum and titanium interface is higher than 85MPa, which exceeds the index requirements. Moreover, other mechanical properties also fully meet the index requirements. The titanium and steel interface shows regular sinusoidal waveform, which results in obvious plastic deformation with the intermetallic compounds in vortex places. The aluminum and titanium interface is relatively straight, with a larger wavelength and smaller amplitude, and the degree of plastic deformation is weak.