Reactive High Deposition Rate RHDR Metal Additive Manufacturing and Repairing for Rapid Restoring of Damaged Parts in Weapon Systems
Abstract
The interest in applying additive manufacturing (AM) technology to the defense system has increased owing to their superior high-degree of design freedom and productivity suitable for the defense industry s low-volume production and high-performance demands. In this sense, a growing amount of weapon parts have been produced/repaired by utilizing additive manufacturing processes, and at the same time, attempts have been made to improve the efficiency of the process with increased processing speed. However, additively manufactured parts at high speed suffer from external/internal defects and degraded material properties and controlling the quality of the final product is not easily manageable due to the limitation of the conventional. To overcome the present hurdles, the next-generation metal AM-based Manufacturing/Repairing technology can be introduced. In this research, nanoparticles that are embedded into thebase material to increase the processing stability in high-speed scanning speed and control microstructure to enhance the mechanical properties will be introduced. In addition, to characterize the melt pool which is affected by the presence of reinforcements, multiphysics process modeling will be conducted. Furthermore, to optimize the process and acquire demanded mechanical properties, multiscale model for estimating microstructure and Process-Structure-Property linkage will be built.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 24, 2024
- Source ID
- N629092412017
Entities
People
- Gunjin Yun
Organizations
- Office of Naval Research
- Seoul National University
- United States Navy