| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Tracking the Emergence and Persistence of Abnormal Grain Growth in the Commercial Aluminum Alloy AA5252 Using 3D X-Ray Microscopy |
| Author(s) |
Helmuth-André Schulz-Harder, Jules M. Dake, Wolfgang Ludwig, Haixing Fang, Pierre-Olivier Autran, Karolína Gutbrod, Carl E. Krill |
| On-Site Speaker (Planned) |
Helmuth-André Schulz-Harder |
| Abstract Scope |
Although abnormal grain growth (AGG) has far-reaching consequences for a wide range of industrial applications and has been investigated for decades, its origin is still not fully understood. One major obstacle is the lack of time-resolved 3D data regarding this phenomenon. To tackle this problem, we acquired time series of 3D maps of a commercial aluminum alloy AA5252 using synchrotron-based diffraction contrast tomography (DCT). The reconstructed grain maps reveal the presence of extreme abnormal grains, the evolution of which can be followed over time and even traced back to the point where they may have emerged. To gain more insight into the role of second-phase particles on the growth of abnormal grains, additional phase-contrast tomography (PCT) measurements were performed. Combining these two data sheds new light on the locations at which abnormal grains emerged and how they were able to maintain a persistent growth advantage. |
| Proceedings Inclusion? |
Undecided |