Abstract
Friction self-piercing rivetingFriction self-piercing riveting (F-SPR), as a solid-state joiningJoining process that generates frictional heat during the process, was utilized to join a 3 T configuration of low-ductility AA7075-AA7075-AA6022 sheetsAA7075-AA7075-AA6022 sheets. A multi-step F-SPR process was employed to precisely control the mechanical interlocking and solid-state joiningJoining, ensuring a strong joint formation. With control of the plunge depth when the transition from rivet penetration to rivet flaring, two joining conditionsJoining condition were developed to assess mechanical joint integrity: one bearing deep penetration with a smaller interlock, and the other yielding a shallow penetration with a larger interlock. Both strategies met the criteria for a sound rivet joint. Customized lap shear tensile configurations were designed to assess the joint strength at interface between first and second layers, as well as between second and third layers. Both conditions demonstrated great joint strength between the first and second layers, while deeper penetration approach showed stronger solid-state jointSolid-state joint, leading to improved joint strength between the second and third layers.
| Original language | English |
|---|---|
| Title of host publication | Friction Stir Welding and Processing XIII |
| Editors | Yuri Hovanski, Yutaka Sato, Piyush Upadhyay, Nilesh Kumar, Anton A. Naumov |
| Publisher | Springer Science and Business Media Deutschland GmbH |
| Pages | 233-241 |
| Number of pages | 9 |
| ISBN (Print) | 9783031808951 |
| DOIs | |
| State | Published - 2025 |
| Event | 13th symposium on Friction Stir Welding and Processing, FSWP 2025, held as part of the TMS Annual Meeting and Exhibition, TMS 2025 - Las Vegas, United States Duration: Mar 23 2025 → Mar 27 2025 |
Publication series
| Name | Minerals, Metals and Materials Series |
|---|---|
| ISSN (Print) | 2367-1181 |
| ISSN (Electronic) | 2367-1696 |
Conference
| Conference | 13th symposium on Friction Stir Welding and Processing, FSWP 2025, held as part of the TMS Annual Meeting and Exhibition, TMS 2025 |
|---|---|
| Country/Territory | United States |
| City | Las Vegas |
| Period | 03/23/25 → 03/27/25 |
Funding
This research was financially sponsored by the US Department of 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 sincerely thank Alan Frederick and Jack Ward Jr. from the Materials Joining Group for their technical support. The authors also express their gratitude to Donald Erdman III for his help in the mechanical testing laboratory.
Keywords
- AA7075-AA7075-AA6022 sheets
- Friction self-piercing riveting
- Solid-state joint