About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-25: Integrated 3-D X-Ray Diffraction and Absorption Data for Multimodal Analysis of Two-Phase Polycrystalline Microstructures |
| Author(s) |
Elsa Nowak, Ashwin Shahani, Marcel Chlupsa, Varun Venkatesh, Emile Hazemann |
| On-Site Speaker (Planned) |
Elsa Nowak |
| Abstract Scope |
Polycrystalline, two-phase materials often derive their mechanical performance from the coupled evolution of grain growth and particle coarsening, yet these interactions remain insufficiently quantified in three dimensions. This work addresses this gap by developing a processing workflow for time-resolved synchrotron X-Ray Diffraction Contrast Tomography (DCT) and Phase Contrast Tomography (PCT) to enable four-dimensional (3-D + time) analysis of grain-particle interactions in an Al-Ni alloy. Spatial alignment of DCT and PCT datasets produces composite reconstructions that simultaneously resolve grain structures and particle distributions. Initial observations show particles preferentially decorating grain boundaries and trijunctions in string-like arrangements, originating from the Al-Al3Ni eutectic microstructure. These reconstructions enable tracking of individual grains and particles across annealing time steps (below the eutectic temperature), allowing particle size, density, and proximity to grain boundaries to be correlated with boundary migration behavior. This framework provides a quantitative basis for evaluating grain-particle interactions and evolution. |
| Proceedings Inclusion? |
Undecided |