Author : M. Uma Mahesh 1
Date of Publication :11th October 2017
Abstract: Friction Stir Welding (FSW) is considered to be the most significant development in metal joining during last decade. This technique is an energy efficient, eco-friendly for different alloys. In the present work an effort has been made to join the Al 6351 and Pure copper material (Dissimilar) by FSW technique and the effects of critical process parameters on mechanical properties i.e. Ultimate tensile strength, impact test and hardness (HV) of friction stir welded have been studied. Three process parameters i.e., tool rotational speed, Feed and tilt angle were taken as process variables. Taguchi L9 Orthogonal Array method was selected for conducting the experiments. Experiments were performed at rotational speeds of 900, 1100 and 1400 rpm/min, Feed of 16, 20 and 25 mm/min and tilt angle of 0, 1 and 20. For generating graphs and analyzing them software Mini Tab 18 was used. Tilt angle is the most significant process parameter for the weld. The maximum Ultimate tensile strength, Impact strength, hardness values were 81.86 N/mm2, 6Joule and 59.88 were observed for the welded joint of Al 6351 and with combination of pure copper.
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