Abstract: Friction stir welding (FSW) is a method of joining materials in the solid state, which has become widespread in various arias of industries. Most relevant, this method of joining materials is for light materials, such as aluminum alloys. The reason for this is the greater tool life, in contrast to the welding of refractory materials such as steel. In addition, the technical characteristics of the equipment necessary for friction stir welding of aluminum alloys are more modest, which makes this equipment cheaper. The volume of aluminum alloys application in industry increase every year. These are, first of all, such branches of the industry as shipbuilding, automotive, aerospace and civil engineering. Therefore, in this paper, the technological features of friction stir welding of the most widely used alloying systems Al-Si, Al-Mg, Al-Mg-Mn are considered and generalized. The structure and mechanical properties of the joints obtained for these alloying systems are analyzed.
Authors: Fedor Yu. Isupov, Anton A. Naumov, Oleg V. Panchenko, Leonid A. Zhabrev, and Anatoliy A. Popovich
Keywords: Friction stir welding; Joining; Aluminium alloys; Mechanical properties; Microstructure; Microhardness