Mechanical Joining Utilizing Friction Stir Forming (original) (raw)

The material ratio of steel in automobiles will likely decrease rapidly in the next decade with the advent of electric vehicles, which will promote the multi-materialization of parts. Hence, recently, researchers have successfully studied technologies for joining dissimilar materials. The authors have studied the joining of dissimilar materials by using the friction stir forming (FSF) approach. In the FSF process, a substrate material was first placed on a die. Next, friction stirring was conducted on the back surface of the material. The material then deformed and filled the cavity of the die because of high pressure and heat caused by the friction stirring. The authors utilized the FSF approach to generate mechanical joints between dissimilar materials. In this paper, the author introduces various techniques for joining dissimilar materials through FSF.