| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solidification in External Fields
|
| Presentation Title |
Insights into Phase Refinement via Low-power Electric Current Processing by Synchrotron-based Imaging |
| Author(s) |
Jonathan Goettsch, Jaime Perez Coronado, Joshua Willwerth, Parth Agrawal, Shanmukha Kiran Aramanda, Ashwin Shahani, Katsuyo Thornton, Alan Taub |
| On-Site Speaker (Planned) |
Jonathan Goettsch |
| Abstract Scope |
The refining effects of electric current applied during the solidification of monolithic alloys have been shown in literature. However, the exact mechanism behind this phenomenon is not yet fully understood. Previous research by the present authors has demonstrated that even low-power electric current processing can result in refinement of less conductive Al3Ti intermetallics in the molten material. These findings suggest that proposed refinement mechanism such as Joule heating-induced remelting or flow-induced grinding of nucleated phases are not the sole drivers of the refining process. To visualize at nanoscopic resolution the impact of varied power levels on the degree of refinement, synchrotron-based X-ray nano-imaging is used to visualize the microstructures of hypereutectic Al-Si alloys and Al-based metal matrix composites. Insights into this novel processing method will elucidate the feasibility of its widespread use in melt processing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Solidification, Process Technology |