RS/AS and Nugget Zone SEM Analysis and Mathematical Equations for Parameter Optimization on Friction Stir Welding Tool

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M. Yugandhar
M. Mothilal
B. Manjunatha
T. Dhamothara Kannan
Md. Saad Patel
S. Nallusamy

Abstract

In order to find the ideal process parameters, the friction stir welding (FSW) is assessed with a mathematical optimisation technique in this paper. In terms of optimisation, the objectives are process-related in that they define or represent how the process behaves. Since the FSW is solid-state and does not involve melting, many of the problems of conventional fusing welding techniques may be avoided. In FSW process, two work pieces are submerged in a spinning tool. As a result of friction and plastic dissipation, the temperature rises to the point where the material is sufficiently softened to be mixed together, forming a weld. Involving solid material, heat transmission, thermal softening, recrystallization and the production of residual stresses, the process is multi-physics in nature.

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