Abstract
The load increase method, which is highly efficient in rapidly identifying the fatigue performance and strength of materials, is used in this study to investigate friction stir welded (FSW) EN AW-5754 aluminum alloys. Previous investigations have demonstrated the accuracy and efficiency of this method compared to Woehler tests. In this study, it is shown that the load increase method is a valid, accurate and efficient method for describing the fatigue behavior of FSW weld seams. The specimen tests were performed on 2 mm thick aluminum sheets using conventional and stationary tool configurations. It is shown that an increase in fatigue strength of the FSW EN AW-5754 aluminum alloys can be achieved by using the stationary shoulder tool configuration rather than the conventional one.
Highlights
Friction stir welding (FSW), which was patented by the Welding Institute (UK) in 1991, has emerged as a promising solid-state joining technique
The present study aims to investigate the effect of different tool configurations on the fatigue behavior of Metals 2020, 10, x FOR PEER REVIEW
The fatigue behavior of relatively new friction stir welded (FSW) concept of dual-rotational in comparison to the two concepts presented in this studyofwill investigated in future studies. sheets
Summary
Friction stir welding (FSW), which was patented by the Welding Institute (UK) in 1991, has emerged as a promising solid-state joining technique. Researchers have successfully applied FSW in the joining of various similar and dissimilar materials in numerous industrial applications [1,2,3,4]. Compared to conventional welding methods, the unique advantage of FSW is the absence of process gases and filler materials as well as the joining of materials with restricted weldability. The FSW process based on a rotating tool consists of a shoulder and probe. The tool plunges into the workpiece through axial pressure, and the material is plasticized by frictional heat. A complex material flow is formed by the shoulder and probe during the continuous plasticizing; the material is displaced behind the tool and forms the weld seam
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