Investigation of roll bonding between aluminum alloy strips

Roll bonding is a solid-state welding process to join similar and dissimilar metals and a well-established and widely used manufacturing process. In this study, Commercial purity aluminum (AA 1100) strips were roll-bonded at warm and cold temperatures. Effects of the parameters that create successful bonds such as the amount of deformation by rolling and rolling temperature on the bond strength and the threshold deformation between two-layer strips of Al/Al were investigated. The peel strengths of the bonds were measured and found to increase when the rolling temperature or the thickness reduction are increased, and successful bonds, whose peel strength approached that of the strength of base metal, were created. In addition, the threshold deformation decreased with increasing rolling temperature.