FRICTION STIR WELDING OF ALUMINIUM ALLOYS

Friction Stir Welding (FSW) is known to result in a complex microstructural development, with features that remain unexplained, such as: the formation of the onion rings structure. Moreover, various microstructural factors have been suggested to control the strength in Al-Mg AA5xxx welds, without identifying their relative contribution. Furthermore, the influence of the basemetal microstructural parameters (e.g. grains, intermetallic particles, stored energy) on the microstructure-property development has not been previously investigated. These issues are addressed in the present study.

Autorentext

Moataz Attallah received his PhD from the University of Birmingham (2007), where he presently works as a lecturer in the School of Metallurgy and Materials Science. His research focuses on characterising the phase transformations, microstructure and residual stresses in friction-based welding and laser fabrication technologies.