Rotary Inertia Friction Welding of Dissimilar High-Strength 422 Martensitic Stainless Steel and 4140 Low Alloy Steel for Heavy-Duty Engine Piston Fabrication As-welded dissimilar 422/4140 rotary inertia friction welding joints were characterized in detail

Funding

The authors acknowledge Cody Taylor, Jessica Osborne, and Jeremy Stidham for their technical support. The research was in part sponsored by the Powertrain Materials Core Program, under the Powertrain Materials Core Program (managed by Jerry Gibbs) in the Department of Energy, Vehicle Technologies Office, United States. The information, data, or work presented herein was conducted in part as an Advanced Vehicle Power Technology Alliance (AVPTA) “Extended Enterprise” project funded by the U.S. Army Ground Vehicle Systems Center (GVSC), U.S. Department of Defense, Department of the Army. AVPTA is chartered under the U.S. Department of Energy/U.S. Department of Defense Memorandum of Understanding titled “Concerning Cooperation in a Strategic Partnership to Enhance Energy Security.” The research and development work was performed at the Oak Ridge National Laboratory, which is managed by UT-Battelle LLC for the U.S. Department of Energy under contract DE-AC05-00OR22725. The piston fabrication and welding were conducted by Tenneco and Manufacturing Technology Inc. The authors would also like to thank Jian Chen and Yong Chae Lim for the useful discussion and technical review.