Friction Stir Welding of High Strength 7XXX Aluminum Alloys is the latest edition in the Friction Stir series and summarizes the research and application of friction stir welding to high strength 7XXX series alloys, exploring the past and current developments in the field.
Friction stir welding has demonstrated significant benefits in terms of its potential to reduce cost and increase manufacturing efficiency of industrial products in transportation, particularly the aerospace sector. The 7XXX series aluminum alloys are the premium aluminum alloys used in aerospace. These alloys are typically not weldable by fusion techniques and considerable effort has been expended to develop friction stir welding parameters. Research in this area has shown significant benefit in terms of joint efficiency and fatigue performance as a result of friction stir welding. The book summarizes those results and includes discussion of the potential future directions for further optimization.
Rajiv S. Mishra is a professor in the Department of Materials Science and Engineering, and Site Director, NSF IUCRC for Friction Stir Processing, at the University of North Texas. Dr. Mishra's publication record includes 255 papers with an h-index of 39. Out of these, 10 of his papers have more than 100 citations. He has many `firsts' in the field of friction stir welding and processing. He co-authored the first review paper (2005), co-edited the first book on the subject (2007), edited/co-edited seven TMS symposium proceedings, and served as guest editor for Viewpoint Set in Scripta Materialia (2008). He also has three patents in this field. He published the first paper on friction stir processing (2000) as a microstructural modification tool. Mageshwari Komarasamy is a Post Doctoral Research Associate with the Center for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas. She has been working on friction stir welding of high strength aluminum alloys and has published a number of papers on high entropy alloys. Her projects have included studies of Double groove friction stir welding and characterization of 7050-T7451 Al alloy; Characterization of 3 inch thick friction stir processed 7050-T7451 Al welds; Friction stir welding and joint efficiency study of Al-Mg-Sc alloys; Friction stir processing of high entropy alloys; Forced mixing of immiscible Cu-Nb-Ag alloy via friction stir processing; and deformation mechanism of Al0.1CoCrFeNi high entropy alloy and its temperature, strain rate and grain size dependence. She has presented at a number of Conferences including the Symposium on High Entropy Alloys II, TMS Annual Meeting 2014 invited presentation; Ultrafine Grained Materials VIII, TMS Annual Meeting 2014; Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention, TMS Annual Meeting 2014; and ICME: Linking Microstructure to Structural Design Requirements, TMS Annual Meeting 2014.
Introduction Basic physical metallurgy of 7XXX alloys Friction stir welding - Overview Temperature distribution Microstructural evolution in various zones Mechanical properties Corrosion Physical metallurgy based guidelines for obtaining high joint efficiency Summary and future outlook References