FRICTION STIR WELDING OF AL-MG ALLOY OPTIMIZATION OF PROCESS PARAMETERS USING TAGUCHI METHOD

The friction stir welding of Al-Mg alloy optimization of process parameters using Taguchi method is discussed. Friction stir welding joints usually consist of four different that includes unaffected base metal, heat-affected zone (HAZ), thermo-mechanically affected zone (TMAZ), and friction stir processed (FSP) zone. The Taguchi method optimizes a process or product design and is based upon three stages that include a concept design or system design, parameter design and tolerance design. Single-pass butt welds were produced in 5-mm-thick plates of aluminum alloy 5083 using an indigenously designed friction stir welding (FSW) machine. The experimental data are converted into mean and S/N ratio. The purpose of analysis of variance (ANOVA) is to find the significant factor statistically. The rotational speed, transverse speed, and axial force were set at 650 rpm, 115 mm/min, and 17 kN, respectively. The rotational speed plays a vital role and contributes 88.64% to the overall response.