Analytical bonding criteria for joint integrity prediction in friction stir welding of aluminum alloys
- Authors: Buffa, G.; Pellegrino, S.; Fratini, L.
- Publication year: 2014
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/94085
Abstract
In this study, two bonding criteria, previously used for porthole die extrusion, are applied to FSW starting from the local value of the main field variables calculated through a specifically developed 3D numerical model of the process. Their applicability and effectiveness have been assessed through an experimental and numerical campaign carried out with the main process parameters varying in a wide range. The pressure-time-flow criterion was demonstrated to be better suited for FSW processes when large welding speed is used. © 2014 Elsevier B.V.