Analysis and Study of Tin Interlayer Aluminum Weld

Abstract

AbstractFriction stir welding is a solid-state welding process and is used to join dissimilar metals effectively. Moreover, they are used to weld Aluminum alloys which are widely used in aerospace, vehicle body parts, and plenty more applications. In our study, two Aluminum plates were joined by inserting a small strip or wire of another material using friction stir welding. This dissimilar non-ferrous welding changes the properties of the material at the specified location, i.e., near the weld joint region. This change of material properties only in a particular region is useful for many applications. The objectives of our study were to improve the properties of the Aluminum alloy (Al6061), especially near the weld region. Two sets of Aluminum plates were taken, and friction stir welding was carried out. The Tin strip was introduced between one set of Aluminum plates while welding and other set is welded normally using friction stir. The destructive tests and Rockwell hardness test were carried out to check the efficiency of the weld joint. It was observed that the tensile strength and compressive strength of the weld joint was higher when the Tin strip is introduced between the Aluminum samples while welding. Further, the elongation of Tin introduced Aluminum sample is less compared to the Aluminum without Tin insertion. From the hardness test, hardness near the weld zone was higher in the Tin-inserted Aluminum sample. Thus, it could conclude that the insertion of the Tin strip between Aluminum can be further studied for various lightweight applications that require specific properties at defined locations.KeywordsAluminumTinSolid-state weldingTensile property