About this Abstract |
Meeting |
Advances in Welding and Additive Manufacturing Research 2022
|
Symposium
|
Advances in Welding and Additive Manufacturing Research 2022
|
Presentation Title |
Solid State Joining of DP 1180 and AA 7050 for Automotive Body Structures |
Author(s) |
Michael P. Miles, Shane Wood, Kevin Shirley, Steve Larsen, Russell Steel, Dale Fleck, Yong-Chae Lim, Zhili Feng, Eric Boettcher |
On-Site Speaker (Planned) |
Michael P. Miles |
Abstract Scope |
Joining of aluminum and steel in automotive sheet applications is most often done by self-piercing riveting (SPR), or in some cases by friction stir spot welding (FSSW). However, for higher strength alloys of both Al and steel SPR becomes difficult, as there is not sufficient ductility in these materials to enable formation of a viable joint. A solid-state joining approach using a friction rivet has been shown to achieve high levels of joint strength, along with acceptable fatigue performance, for various combinations of advanced high strength steel (AHSS) and high strength aluminum alloys. In the current work, results for a combination of 1.2mm DP 1180 and 2.0 mm AA7050 will be presented, including data from both static and fatigue testing. In addition, the development of a welding head prototype, supported by a Department of Energy project, to automate the joining process for potential automotive structure fabrication will be presented. Challenges that were overcome in order to achieve a base level of automation, and an evaluation of areas that need to be addressed in order to move toward a production-ready system, will be discussed. |
Proceedings Inclusion? |
Undecided |