A study of warm and cold roll-bonding of an aluminium alloy

6111 Aluminium alloy strips were roll-bonded at warm and cold temperatures. The parameters that create successful bonds were determined. The shear strengths of the bonds were measured and found to increase when the temperature or the interfacial pressure are increased. Successful bonds, whose shear strength approached that of the parent metal, were created at room temperature only after the alloy was annealed. At warm temperatures the bond strength reached the strength of the parent metal and depended strongly on the entry temperature.