In this research work an attempt has been made to develop an empirical relationship between FSW variables and the mechanical properties (tensile strength, yield strength, percentage elongation, micro hardness and impact toughness) of friction stir welded aluminium alloy 6082-T651 joints. Central composite design matrix was used to prescribe the required number of experimental conditions. A four-factors-five-level central composite design was used to determine the optimal factors of friction stir welding process for aluminium alloy. The central composite design (CCD) with a quadratic model was...

Heat input plays an important role in mechanical, metallurgical and other properties like corrosion resistance of weld in the fabrication industry. Although there are so many problems associated with the welding of austenitic stainless steel but inter granular corrosion is most critical one of them. 21% Chromium 13% Nickel Stainless Steel is used for various applications at elevated temperatures above 700o C such as the catalytic convertors, nuclear industry and automotive exhaust systems and in pulverized coal burner nozzles of coal fired thermal plants due to supposition that it is...