Effect of tool parameters on mechanical properties, temperature, and force generation during FSW

Abstract

The welding tool parameters play a critical role in obtaining weld strength during friction stir welding. In this investigation, the effect of welding tool parameters such as pin and shoulder diameter and pin height on the axial and traverse forces and also temperature of welding of AA5083 alloy was investigated. A specially designed dynamometer was used to measure the welding tool forces. Then, the mechanical properties of the welds were characterized using tensile tests. Moreover, macrostructure of welds was investigated in order to analyze weld quality. Finally, optimum values for shoulder diameter, pin height and pin diameter were determined.