An effect of Pin less Mild Steel Tool on Friction Stir Welding for Joining Aluminium 6082 Plates

S Khobragade, P Khodke
International Research Journal of Engineering and Technology (IRJET)   unpublished
In this paper, research has been carried out experimentally to compare the effect of pin less Mild Steel tool of 10 mm diameter for Friction Stir Welding to join Aluminium 6082 plates of 3mm thickness with the Mild Steel tool of 3 mm diameter and 1 mm length. The effect of FSW is studied on hardness, strength and microstructure with different tool rotational speeds ranging from 800 rpm to 1600 rpm, at feed rate 55 mm/min, for making comparison between the newly developed pin less tool and the
more » ... less tool and the pin tool of Mild steel. The comparative research indicates that, the pin less mild steel tool produces the better tensile strength than the pin tool in the entire range of the tool rotational speeds and feed rates. The maximum strength of the FSW joints is 82.41% of that of its base metal at 1200 rpm and feed of 55 mm/min using the pin less tool. It is further observed that, for both the tools, the hardness of weld zone is increased at lower tool rotational speed, while refined microstructure can be noticed on surface of the weld zone at higher tool rotational speed.