Abstract
The fatigue behavior of AA6060-T6 friction stir welded butt joints was investigated. The joints were produced by using both a standard and a threaded tri-flute cylindrical-tool with flat shoulder. The friction stir welding process was carried out using different feed rates. Preliminary tensile tests, micrograph analyses and hardness profile measurements across the welds were carried out. Welded and unwelded fatigue samples were tested under axial loading (R = 0.1) with upper limits of 104 and 105 cycles, using threaded and unthreaded (standard) tools at different feed rates. The best tensile and fatigue performance was obtained using the standard tool at low feed rate.
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Sergio Baragetti is Full Professor of Machine Design and Computational Mechanics at the University of Bergamo (Italy). He graduated in Mechanical Engineering from Politecnico di Milano. Ph.D. in Quality Engineering, Università di Firenze. He is the Director of GITT — Centre on Innovation Management and Technology Transfer and of the Structural Mechanics Lab of the University of Bergamo. Delegate of the Rector for NETVAL. His research activities include the study of effects induced by surface treatments on the fatigue behaviour of mechanical components, corrosion fatigue mechanisms in aqueous environments, surface thin hard coatings effects on fatigue, contact and corrosion fatigue.
Gianluca D’Urso is Assistant Professor at the Department of Engineering, University of Bergamo. He received his degree in Management Engineering at the University of Bergamo (Italy), Ph.D. in Manufacturing Engineering at the University of Padova (Italy). He is deputy director of GITT — Centre on Innovation Management and Technology Transfer. And he is member of AITEM, the Italian Association of Manufacturing Engineers. His main research activities include analysis of welding technologies based on FSW (Friction Stir Welding) by means of experimental and simulative (FEM) methods, experimental and FEM analysis of forming and machining processes, microfabrication technologies using micro-EDM (Electro Discharge Machining) and EBL (Electron Beam Lithography).
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Baragetti, S., D’Urso, G. Aluminum 6060-T6 friction stir welded butt joints: fatigue resistance with different tools and feed rates. J Mech Sci Technol 28, 867–877 (2014). https://doi.org/10.1007/s12206-013-1152-1
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DOI: https://doi.org/10.1007/s12206-013-1152-1