Joining of Lightweight Dissimilar Materials by Friction Self-Piercing Riveting
In this work, we employed a unique solid-state joining process, friction self-piercing riveting (F-SPR), to join carbon fiber composites to the low-ductility magnesium alloy AZ31B. The localized frictional heat generated between the rotating rivet and the underside of the magnesium sheet softened and prevented crack generation in AZ31B. A consumable joining rivet was designed to join the selected material stacks by F-SPR. Lap shear tensile testing was used to assess the joint quality of specimens produced by F-SPR. The joint interface from the cross-sectioned F-SPR specimen was evaluated by optical microscopy.
KeywordsFriction self-piercing riveting Carbon-fiber-reinforced polymer AZ31B
This research was financially sponsored by the US Department Energy, Vehicle Technologies Office, as part of the Joining Core Program. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the US Department of Energy under Contract DE-AC05-00OR22725. The authors would like to thank to Kevin Simmons at Pacific Northwest National Laboratory for an optical microscopy of carbonfiber composites.
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