EXPERIMENTAL STUDY OF FRICTION STIR WELDING SPEED EFFECT ON STRENGTH OF MATERIAL AA-6082 AND AA-6061 ALUMINIUM ALLOYS

Abstract

Aluminium alloy has gathered wide acceptance in the fabrication of light weight structures requiring a high strength to weight ratio. Compared to the fusion welding processes that are routinely used for joining aluminium alloys, Friction Stir Welding (FSW) process is an emerging solid state joining process in which the material that is being welded does not melt and recast. In present study an attempt has been made to develop a model to predict tensile strength of the friction stir welded Two Different AA6082-AA6061 aluminium alloys by incorporating FSW process parameters. The FSW process parameters such as rotational speed, welding speed, axial force and attack angle play vital roles in the analysis of weld quality. The aim of this research study is to investigate the effects of different welding speeds on the weld quality of Two Grads AA6082-AA6061 aluminium. The obtained results explain the variation of stress as a function of strain and the effect of different welding speed on ultimate tensile strength and hardness. The friction stir welded plates of AA6082-AA6061 by using the taper pin profile reaches the ultimate tensile strength of 115Mpa which is (62.16% - 60.52%) of the base metal ultimate strength.