Abstract
In this research article, the FSW tool parameters for welding the dissimilar aluminium AA7075-T651 and AA6061 alloy were optimized by implementing the Taguchi method. The FSW parameters related to the tool such as tool offset, pin profile of tool and tilt angle of tool were taken into account for the experimental work. The optimal FSW parameters were confirmed through the confirmation experimental run. ANOVA analysis revealed that the tilt angle of tool is the most dominating factor with contribution percentage of 45.85% and other parameters like tool pin profile involved 40.27% and tool offset involved 12.36% for improving the tensile properties of the FSWed dissimilar AA7075-T651 and AA6061 joint. SEM image of tensile fractured surfaces revealed that most of the specimens were failed due to ductile mode of fracture.
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