About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Real-Time 3D Visualization of Eutectic Solidification Dynamics Using
Limited Angle Tomography |
| Author(s) |
Soumyadeep Dasgupta, Paul Chao, Xianghui Xiao, Ashwin Shahani |
| On-Site Speaker (Planned) |
Soumyadeep Dasgupta |
| Abstract Scope |
By studying solidification in real-time, we gain direct insights into interfacial dynamics, enabling improved control, design, and development of advanced materials. Synchrotron X-ray nanotomography provides a 3D perspective of microstructural evolution at the nanoscale; however, its temporal resolution is constrained by the hardware capabilities of the microscope. To achieve sub-minute temporal resolution, we employ Limited Angle Tomography (LAT). Using LAT, we investigate the directional solidification of a near-eutectic Al-Al₃Ni alloy as a proof-of-concept. A novel image processing and composite reconstruction approach termed ‘pseudo-4D imaging’ mitigates artifacts inherent to LAT, allowing us to visualize the eutectic solidification process in 3D space and time. This technique relies
upon data fusion of real-time x-radiographs with post mortem 3D reconstruction of the fully-solidified specimen. The approach holds promise not only for solidification science but also for the 3D characterization of other time-sensitive phenomena within constrained viewing windows. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Solidification |