| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
3D Mapping of Intragranular Strain and Microstructure in Recrystallized Iron Using Dark-Field X-Ray Microscopy |
| Author(s) |
Virginia Sanna, Yubin Zhang, Wolfgang Ludwig, James Ball, Abderrahmane Benhadjira, Marilyn Sarkis, Carsten Detlefs, Can Yildirim |
| On-Site Speaker (Planned) |
Virginia Sanna |
| Abstract Scope |
This study examines intragranular residual strain and orientation distributions in fully recrystallized pure iron grains, using Dark-Field X-ray Microscopy (DFXM) for high-resolution, non-destructive imaging at the submicron level. Our findings reveal uneven strain distributions within grains, with localized values up to 3 × 10⁻⁴, and visualize individual dislocations, highlighting microstructural complexity even after full recrystallization. Simulations of DFXM dislocation contrast offers insights into Burgers vectors. Complementary 3D X-ray Diffraction (3DXRD) analysis using a box beam adds context on overall texture and grain size distribution, enhancing our grasp of grain-level heterogeneity. By combining the two techniques, we relate DFXM strain and orientation data to 3D grain structures, providing a clear view of residual strain landscapes. This combined approach underscores the role of residual strain effects in recrystallized grains and advances our understanding of microstructural evolution in polycrystalline materials. |
| Proceedings Inclusion? |
Undecided |