EXPERIMENTAL STUDY OF DIFFUSION BONDING/SUPERPLASTIC FORMING OF DISSIMILAR ALUMINIUM ALLOYS

The objective of this project work is to reduce the weight of components along with high strength. The SPF/DB technology is a widely used manufacturing method in the aerospace industry for complex components with Ti-based or Al-based alloys. The SPF/DB process will be used to reduce part count as well as the number of fasteners, assembly time, and weight, leading to cost savings for the product. The combination of solid-state bonding and superplastic forming has been readily applied to aluminium alloys to produce aerospace structures at low cost. Effects of bonding temperature, holding time, and pressure on the bonded specimens will be studied. In order to examine the inter-diffusion of metal atoms across the bonding interface will also be studied. In addition, comparisons will be made for contact ratios of specimens bonded under various conditions.