Friction Stir Welding and Optimization of Its Parameters for Maximum Tensile Strength with Two Dissimilar Alloys

Abstract

It is solid state welding process which is used in various applications in aerospace, marine, automotive industries. It is used for joining the various similar and dissimilar materials. Friction stir welding has better mechanical properties in comparison with other welding process in the zone. The present work focus to find the optimal combinations of parameters for maximum tensile strength of the weld joint of two dissimilar alloys of Aluminium i.e. Al 5052 and Al 5086. Rotational speed of tool, traverse speed of tool and tilt angle of tool are the important factors or parameters of interest. The present work aims to find out feasibility of process using the two dissimilar alloys i.e. aluminium 5052 and aluminium 5086 and to find out the tensile strength of using different combinations of parameters. A modified vertical milling machine has been used to setup the welding and a group of welding parameters. Various properties of welded joints were evaluated using various tests of mechanical includes the tensile testing. In the present work it is found that the tensile strength is majorly influenced by rotational speed of tool than tool tilt angle than tool traveling speed.