Friction stir spot welding (FSSW) of dissimilar S45C steel and 6061-T6 aluminum alloy in a butt configuration is experimentally investigated. Butt performed using convex scrolled shoulder tool at different rotational speeds. FSSW joints are successfully fabricated by offsetting the to side. The microstructures three speeds characterized scanning electron microscopy energy dispersive spectrometr...

media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. EFFECTS OF TOOL-WORKPIECE INTERFACE TEMPERATURE ON WELD QUALITY AND QUALITY IMPROVEMENTS THROUGH TEMPERATURE CONTROL IN FRICTION STIR WELDING Axel Fehren...

This paper analyzes local lattice rotations introduced in severely deformed polycrystalline titanium by friction stir welding. Nondestructive three-dimensional (3D) spatially resolved polychromatic X-ray microdiffraction, is used to resolve the local crystal structure of the restructured surface from neighboring local structures in the sample material. The measurements reveal strong gradients o...

Friction stir welding (FSW) can be defined as a green technology, because the consumption of energy during this process is less than other welding methods. In addition, during the process there is no gas, filler material or other consumables. It should be noted that, complex curved shapes are now commonly used in different industries in a bid to have lightweight structures. According to the abo...

Abstract The current investigation of refill friction stir spot welding (refill FSSW) Al alloy to copper primarily involved plunging the tool into bottom sheet achieve both metallurgical and mechanical interfacial bonding. Compared conventional FSSW pinless FSSW, weld strength can be significantly improved by using this method. Nevertheless, wear is a critical issue during FSSW. In study, defec...

Abstract In this study, similar aluminum alloys AA5052 with additional carbon fiber-reinforced polymer composite (CFRP) interlayer were selected to investigate the effect of welding parameters (rotational speed and dwell time) on mechanical properties, joint efficiency, microstructure friction stir spot weld joint. The maximum tensile shear load was 1779.6 N efficiency 14.6% obtained at rotatio...