About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Correlative Electron and Synchrotron X-Ray Imaging of Fe-Rich Intermetallics and Processing-Induced Defects in 6xxx and 7xxx Aluminum Alloys |
| Author(s) |
Kai-Yu Liang, Ming-Hung Wu, Chun-Yeh Chen, Hao-Chuan Huang, Hsiu-Chien Chan, Yen-Fang Song, Gung-Chian Yin, Te-Cheng Su |
| On-Site Speaker (Planned) |
Kai-Yu Liang |
| Abstract Scope |
Synchrotron X-ray tomography, combined with in-house electron microscopy techniques such as EBSD and SEM, was utilized to investigate processing-induced defects and Fe-rich intermetallic evolution in 6xxx and 7xxx series aluminum alloys. In the 6xxx alloys, Fe/Si ratios and cooling rates were systematically varied using a V-shaped wedge mold to simulate industrial casting conditions. EBSD analysis enabled the classification and quantification of Fe-rich intermetallics, while synchrotron imaging provided three-dimensional insight into their spatial morphology and connectivity, revealing features not observable by 2D methods alone. These correlations help elucidate the role of intermetallic geometry in void formation. In the 7xxx alloys, semi in-situ observations were performed at different aging times to understand how precipitate dissolution during solution treatment influences void nucleation and evolution. The study demonstrates the power of integrating multiscale and multimodal imaging to clarify complex structure–defect relationships, ultimately supporting improved alloy design and process optimization for high-performance aluminum systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Solidification |