Corrosive Behaviour of Friction Stir Al Alloy Welding Technique: A Review

Abstract

Abstract Friction stir welding (FSW) is a technique under which solid state joining process principal working upon the materials for infusing strength. As reported by myriad scholars FSW emphatically used in automobiles, air craft structures, ship building etc. With priority to consume alloys used aluminum as base metal. Due to their cost effectiveness and lighter in weight. We discussed alloys of 2xxx, 5xxx, 6xxx, 7xxx series to ascertain the corrosion nature of prime material. Aluminums may be heat treated or non-heat treated so we discussed the impact of various corrosive techniques for strengthening the alloys. This article elaborate about the corrosion behavior of the material over HAZ, NZ, TMAZ regions of welded part and ascertain the various process parameters under intergranular corrosion testing(ICG) & Electrochemical impedance spectroscopy (EIS) technique under varying circumstances. Purpose of this paper is to enhance the fundamental skill of researchers in future for effectively dealt with the improvement of Aluminums alloys.