| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
O-32: Phase Evolution of Laser Melted Single Tracks of 316L |
| Author(s) |
Anna K. Rawlings, Andrew J. Birnbaum, John C. Steuben, Athanasios Iliopoulos, John G. Michopoulos |
| On-Site Speaker (Planned) |
Anna K. Rawlings |
| Abstract Scope |
Laser-processed 316L stainless steel single tracks are analyzed for the inverse identification of the solidification and phase transformation sequence upon cooling. The analysis is performed through a parameterized study that couples the effects of the laser parameters with the initial baseplate microstructure. The evidence for the phase evolution is determined through orientation-based grain growth behavior analysis along with identification of microstructural features associated with the solidification modes of austenitic stainless steels. The non-equilibrium conditions and rapid solidification of the selectively laser melted tracks result in significant deviations from the equilibrium phase evolution. The primary solidification phase, that is the first phase to solidify from the molten metal, of 316L showed the strongest dependence on the initial baseplate microstructure, while the processing parameters affect the extent of the characteristic microstructural features within the respective solidification modes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Phase Transformations, Additive Manufacturing |