Investigation on strength of solid state Al6061/30%Al₂O₃ bonds for automotive applications using response surface methodology
by R. Adalarasan; M. Santhanakumar; S. Thileepan
International Journal of Automotive Composites (IJAUTOC), Vol. 1, No. 4, 2015

Abstract: Welding is an important joining operation with widespread applications in automotive components. Liquid state joining of aluminium-based composite materials in applications involving engine valve, drive shaft and axle was observed to create unnecessary metallurgical changes in the parent material, thereby reducing the joint strength. A solid state welding process could offer the required solution for this problem. Hence, the present work explores the possibility of obtaining strong joints with Al6061/30%Al₂O₃ composites by employing the process of friction welding (FW). The selection of proper levels of welding parameters like the rotational speed, burn-off length, frictional and upset pressure was essential to improve the strength of these bonds. Taguchi's L₁₈ orthogonal array was used for conducting the experiments and the tensile strength of the bond was evaluated as the response. The response surface methodology (RSM) was used to form a quadratic model for the tensile strength and the prime welding condition for stronger joints was sorted out using the desirability analysis.

Online publication date: Thu, 13-Aug-2015

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