Thermo-Mechanical Analysis of Tool used in FSW Process of AL ۱۱۰۰ Alloy

چکیده مقاله

The ability of friction stir welding (FSW) to create a solid state bond makes it a proper candidate for materials that are difficult to join using traditional arc welding techniques. In this research, a three-dimensional model based on finite element analysis was used to study thermo-mechanical characteristics of tool used for FSW process of aluminium 1100. This research considered tool regarding the gradient of stress and temperature developed in it. Additionally, wear of tool was studied. The results showed that maximum rate of wear for tool happened at plunging step which tool initially contacts the workpiece and pin wears more than other points of tool. Additionally, the temperature distribution around the weld region, during the FSW, was investigated using finite element method (FEM). FE-results were verified by experimental results. The comparisons revealed a good compatibility between the results. Additionally, it was concluded that temperature in advancing side is higher than that in retreating side.