Parametric Analysis and Optimization of Friction Stir Welding OFAA 6111-T4

Abstract

Friction Stir Welding is a well known solid state joining technology. Many processing conditions and materials properties affect the micro structural evolution and mechanical behavior of the produced joints. In this study , an experimentation are performed on FSW with and without preheating  to study the  effect of friction stir welding process parameters like Tool travel speed, tool rotational speed and shoulder diameter on mechanical properties of Friction stir welding joint of 6111-T4  studied by using statistical analysis tool. The Quantitative analysis has gives observations like the maximum responses such as Tensile strength ,Hardness, yield strength and percentage elongation  at higher rotational speed of tool, medium tool travel, larger shoulder diameter. Factorial design ,Taguchi design, ANOVA and Regression analysis indicates an influence of individual parameters on Ultimate Tensile strength and other mechanical properties  of welding joint. A mathematical relations are proposed for different process parameters which gives best welding joints in friction stir welding process.