| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Developing Banding Microstructures in Directional Solidification of Aluminum Metal Matrix Composites |
| Author(s) |
Jaime Perez Coronado, Aramanda Shanmukha Kiran, Jonathan Goettsch, Ashwin Shahani, Alan Taub |
| On-Site Speaker (Planned) |
Jaime Perez Coronado |
| Abstract Scope |
Solidification in aluminum alloys, specifically metal matrix composites (MMCs), remains a challenge due to the difficulty of achieving uniform distribution of the ceramic particles throughout the aluminum matrix. Here we observe an unusual banding of particles during directional solidification of Al-TiC composites. Banding was also observed in an Al-In alloy, wherein the Al solidification front interacts with liquid In-rich droplets. The similarity in the two types of microstructures suggests a universality in the underlying physics of banding. During this presentation, three-dimensional, x-ray tomographic results will be presented, which altogether demonstrate how the banding process depends on different variables, such as: alloy chemistry, interfacial velocity, and thermal gradient. These results offer insights into how particle pushing can be controlled to achieve a targeted distribution of ceramic particles in the aluminum matrix, bringing us closer to a viable alternative for lightweight materials for the automotive and aerospace industry. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Solidification, Aluminum, Composites |