| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
O-46: Microstructural Evolution during Solidification of Ternary Eutectic Al-Cu-Mg |
| Author(s) |
Dominic I. Ezemenaka, Amber Genau, Christian Patino |
| On-Site Speaker (Planned) |
Dominic I. Ezemenaka |
| Abstract Scope |
In-depth understanding of how to precisely manipulate the microstructures of multi-phase alloys during solidification so as to meet the rapidly changing demands of technological advancement is a daunting task. This research seeks to increase our fundamental understanding of the parameters which control multi-phase solidification by studying the behavior of three-phase eutectic systems, which exhibit far more variability and complexity than standard binary eutectics. Directional solidification via a Bridgman furnace was used to investigate the behavior of Al-Al2Cu-Al2CuMg ternary eutectic over a range of growth rates and temperature gradients. In order to fully characterize the different microstructural morphologies observed, both qualitative and quantitative approaches are deployed, particularly with the help of parameters such as phase fraction, eutectic spacing, number of nearest neighbors, and shape factor. Particular attention is paid to the evolution of the microstructural patterns and crystallographic orientation relationships, resulting from grain competition, as the solidification distance increases. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |