Abstract
Welding parameters for pipe joint friction stir welding (FSW) have been identified based on L-9 orthogonal arrays used in the Taguchi Method. Different welding parameters, such as rotation speed, travel speed and axial force, have been used to produce several quality friction stir welded AA6063 pipe butt joints. The reliability of products obtained in the FSW process can be improved through the identification of the optimum combination of welding parameters. Weld quality was evaluated based on its tensile strength and residual stress profiles. The S/N analysis and Analysis of Variance (ANOVA) have been used to determine significant welding parameters that affect weld quality. Maximum tensile strength with acceptable residual stress was obtained at the optimum welding parameters of 1300 rpm, 5 mm/s and axial force between 5 and 6 kN. The goal of this study was to optimize welding parameters for high tensile strength and low residual stress.
Highlights
Friction stir welding (FSW) can be used to cater for various sectors, such as aerospace, shipbuilding, automobile, marine and petro-chemical industries (Kohak & Navthar, 2017)
During the FSW process, the material is plasticized by the stirring action of a high rotating tool and the joint is created through the plastic deformation of the material
Tool rotation speed, welding speed and axial force are critical, when it comes to adjusting welding temperature to
Summary
Friction stir welding (FSW) can be used to cater for various sectors, such as aerospace, shipbuilding, automobile, marine and petro-chemical industries (Kohak & Navthar, 2017). During the FSW process, the material is plasticized by the stirring action of a high rotating tool and the joint is created through the plastic deformation of the material. This high rotating tool moves along the length of the weld, allowing the two pipes to be joined. The most significant process parameters that affect joint characteristics can be understood by studying the physical process in an experimental setting using the Taguchi method (Prasad & Namala, 2017) They may include very low distortion, no fume production, no filler metals, no special surface treatment and no shielding gas (Verma & Misra, 2017). Tool rotation speed, welding speed and axial force are critical, when it comes to adjusting welding temperature to
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