About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Real Time Imaging
|
Presentation Title |
Time-Resolved X-ray Tomography Studies of Dendritic Evolution in Al-Cu Alloys |
Author(s) |
Kate L. M. Elder, Tiberiu Stan, Yue Sun, Xianghui Xiao, Peter Voorhees |
On-Site Speaker (Planned) |
Kate L. M. Elder |
Abstract Scope |
Dendrites are ubiquitous structures that are central to setting material properties, but the mechanism behind how dendrites grow is not fully understood. Using X-ray synchrotron radiation experiments, dendritic growth of Al-Cu alloys, with varying compositions, is studied in four-dimensions (three dimensions and time) to track the evolution of the three-dimensional structures as a function of time using novel X-ray tomography algorithms. Starting from a temperature above the liquidus, samples were cooled at multiple cooling rates to observe dendritic growth. To extract useful information from these large datasets, we employ two-point spatial correlations and interfacial shape distributions to provide information on the differences in dendrite morphologies, branch spacing and interfacial curvatures due to different cooling rates and compositions. The data analysis methods as well as the results will be discussed. |
Proceedings Inclusion? |
Planned: |