About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
Tomographic Analysis of Microstructure Evolution in Ternary Al-Cu-Ag Eutectic |
Author(s) |
Amber L. Schneeweis Genau, Jessica Friess, Philipp Rayling |
On-Site Speaker (Planned) |
Amber L. Schneeweis Genau |
Abstract Scope |
Despite significant study over the last fifteen years, the reasons for the varied and complex microstructures observed in ternary eutectic Al-Cu-Ag are still not fully understood. In order to better characterize the formation and evolution of the multi-phase structures which form in this system during directional solidification, samples processed under various conditions were subjected to x-ray tomography. With the help of a new machine-learning-based image analysis tool, features such as pattern evolution, alignment, transitions between two- and three-phase growth, and the movement of grain boundaries were evaluated. The 3D visualization of complex ordering phenomena as well as persistent faceted Al-Ag2Al interfaces and misaligned microstructure patterns indicate the high energy barrier to achieve well-ordered microstructures. Overall, this study provides a valuable experimental comparison for 3D phase field simulations while demonstrating the potential of this system to be tailored in a diversity of ways. |
Proceedings Inclusion? |
Planned: |
Keywords |
Solidification, Characterization, Phase Transformations |