Characteristics of High Speed Welding between 6063 and S45C by Means of Friction Stirring-Study on Welding in Dissimilar Metals by Means of Friction Stirring (1st Report)-

Abstract

Friction stir welding (FSW) has become an important joining process of aluminum alloys in various industries. Conventional FSW process, however, is difficult to apply to the welding in dissimilar metals. In our series of research, the welding between aluminum alloy and steel has achieved by means of friction stirring. This is a promising way to realize a high performance joint in dissimilar metals. In the present study, the weldability between 6063 and S45C by means of friction stirring was investigated. By optimizing the welding conditions, such as a tool configuration and a rotating speed, higher welding speed more than 1000 mm/min was achieved. The mechanical properties of the weld joints fabricated were evaluated with the normal tensile test and hardness test. The specimens were fractured in the portion of the lowest hardness area in aluminum alloy. In the microstructure observation with SEM, thick intermetallic compound layer on the interface region was not detected.

Effect of the Surface State of Steel on the Microstructure and Mechanical Properties of Dissimilar Metal Lap Joints of Aluminum and Steel by Friction Stir Welding

“…It is also possible that good welds can be produced when FSW is used to join dissimilar materials. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The need of light weight in automotive body construction leads to the increasing use of the lap joining of aluminum alloy and steel in the fabrication of vehicles. [19,20] Therefore, the development of reliable joints between aluminum alloy and steel is required.…”

Influence of Tool Shape on Friction Stir Welded Joint of Aluminum and Steel with Circular Weld Line

“…This method is possible to reduce the heat input during welding. We successfully achieved welding between aluminum alloy and steel by FSW with welding tool offset from the weld line [1][2][3][4]. The probe of welding tool stirs aluminum and slightly grids the steel surface.…”

Friction stir diffusion bonding of dissimilar metals

“…In the case of dissimilar welding of aluminium alloys to structural steels, a few studies have been published since 2003. [9][10][11][12][13] All these studies showed that the best tensile strength results are obtained with the aluminium plate in the retreating side, but there is no common agreement concerning the position of the pin with regard to the interface between the two plates. Watanabe et al investigated different positions of the pin relatively to the interface and showed that the best mechanical strength of the joint was obtained when the pin was mainly positioned in the aluminium plate with a 0?2 mm lateral shift towards the steel plate.…”