Study the impaction tool speed on the friction stir welding of magnesium alloys plates

Reduction of materials weight is an innovative process in the current materials engineering works which causes lesser fuel consumption in any automotive. Magnesium alloys (Mg) is one of the most preferable lightweight structural material and it provide both potential and economical aspects in terms of rich material properties. In this study, dissimilar Mg alloys of AZ80A - T5 and AZ91C – T6 plates joined by the Friction Stir Welding (FSW) method by using tapered cylindrical tools with three different speeds of 500, 750 and 1000 rpm are used for the study. The optimum rotational speed was suggested for the FSW welded magnesium alloy plates based on the macrostructure and SEM images.