Effect of Process Parameters on Tensile Behaviour of FSW AA 6061-AA 7075 Reinforced with TiO₂ Particles Using Statistical Approach

Abstract

Joining of dissimilar materials especially aluminium alloys through friction stir welding approach has been effectively carried out in different experimentations resulting in enhanced mechanical properties and meeting various application sectors. Process parameter plays an exceptional influence on the joint properties and determines the mechanical characterization. Here the objective is to investigate the AA6061 and AA 7075 reinforced with titanium dioxide (TiO2) nanoparticles using Taguchi and ANOVA methods considering pin profile, welding speed, tool rotational speed, and tilt angle utilizing this process. TiO2 powder was added at the weld juncture. All the specimens were welded subjected to various levels of operating conditions of the process parameters and further processed for tensile evaluation. Result shows that the most significant parameters are the tilt angle and pin profile for ultimate tensile strength.