| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
Leveraging Metastability in High Entropy Alloys for Grain Refinement in Additive Manufacturing |
| Author(s) |
Akane Wakai, Jenniffer Bustillos, Katherine Shanks, Amlan Das, Noah Sargent, Wei Xiong, Atieh Moridi |
| On-Site Speaker (Planned) |
Akane Wakai |
| Abstract Scope |
While additive manufacturing (AM) presents promising opportunities for producing intricate structures with customized properties, the growth of coarse columnar grains during rapid solidification imposes limitations on the mechanical performance of AM-produced components. To overcome this challenge, we exploit metastable phase transformations in high entropy alloys (HEAs) to develop novel alloy compositions that promote grain refinement during solidification. In this study, we focus on FeMnCoCr HEAs and systematically investigate the interplay between phase stability, processing, microstructure, and properties by combining thermodynamic modeling, operando X-ray diffraction studies, multiscale microstructural analysis, and mechanical testing. By integrating these techniques, we gain a fundamental understanding of the grain refinement mechanism and demonstrate metastability engineering as a viable methodology for designing alloys for AM by harnessing the unique processing conditions of AM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Solidification |