| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Alternative Processes (Beyond the Beam)
|
| Presentation Title |
Additive Friction Stir Deposition: Microstructural Control Sensitivity |
| Author(s) |
Robert J. Griffiths, David Garcia, Hang Yu |
| On-Site Speaker (Planned) |
Robert J. Griffiths |
| Abstract Scope |
Additive Friction Stir Deposition (AFSD) is a solid-state additive manufacturing technology capable of processing a wide variety of alloys and composites. In general, materials processed via AFSD have been shown to have refined microstructures with equiaxed grains. Process input variables can be used to adjust thermomechanical conditions such as temperature, strain rate, and strain; however, the sensitivity of these conditions to the input variables changes with different material systems. Inherit material properties such as friction coefficients, stacking fault energy, and crystallography change how the material responds to process inputs and ultimately the degree of microstructural control that is achievable via AFSD. In addition, materials that rely on second-phase particles for strengthening have additional interactions with dynamic dissolving and precipitation occurring during the process. Microstructures and properties for a variety of material systems processed by AFSD are discussed, including systems that show high and low degrees of microstructural control. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |