About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Microstructural Control in Materials Processing: Role of Phase Transformation Pathways
|
| Presentation Title |
Effect of Hot Strength and Alloying on Additive Friction Stir Deposition |
| Author(s) |
Merris Corinne Wells, Thomas Dorin |
| On-Site Speaker (Planned) |
Merris Corinne Wells |
| Abstract Scope |
Additive friction stir deposition is a solid-state additive technique, that uses intense deformation and friction to soften metal feedstock into multi-layer components. Studies on the deposition of aluminum focus on the commercially available heat-treated alloys. The complex chemistries and strengthening mechanisms of these alloys make it difficult understand the link between the alloys properties, how well it deposits, and the resulting microstructure. Al-Mg binaries were used as model alloys to isolate the impacts of solute during fixed-temperature depositions. EBSD and mechanical testing gave a better understanding of the impact of alloying on properties and processing. Paired with a study on the impact of starting temper on the evolution of 2nd phase particles. Results show that the processing window in terms of strain rate and temperature were limited by the solute content. The evolution of 2nd phase particles alluded to the potential to design an alloy that dynamically ages during deposition. |