About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Watching Real-Time Eutectic Solidification to Understand the Crystal Morphology Formation and Habit Plane Selection |
Author(s) |
Paul Chao, Shanmukha Kiran Aramanda, Xianghui Xiao, Ashwin J Shahani |
On-Site Speaker (Planned) |
Paul Chao |
Abstract Scope |
Our study utilizes synchrotron transmission x-ray imaging at the nanoscale to observe the eutectic solidification dynamics of the Al-Al3Ni alloy in real-time. This process reveals the simultaneous emergence of two solid crystals from the liquid, forming a periodic pattern influenced by solute diffusion and capillary effects. The investigation focuses on the formation of facets under various freezing conditions, a critical aspect for understanding and technological applications. High-resolution imaging of dynamic interfaces presents challenges, prompting the development of alternative imaging strategies. We discuss how the growth front shapes of the Al-Al3Ni eutectic relate to the 3D shape of Al3Ni crystals in the solid state. Additionally, we explore the orientation relationship and habit planes between solid Al and Al3Ni crystals, using Electron Backscatter Diffraction (EBSD) for quantification. This research provides insights into the microstructural evolution during solidification, emphasizing the interplay between phase transformation dynamics and microstructure development. |
Proceedings Inclusion? |
Undecided |