About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
3D InSitu Characterization of Twinning in Neighboring Mg-4Al Grains Using Dark-Field X-Ray Microscopy |
| Author(s) |
Sangwon Lee, Can Yildirim, Adam Creuziger, Evan Rust, Carsten Detlefs, John Allison, Ashley Bucsek |
| On-Site Speaker (Planned) |
Sangwon Lee |
| Abstract Scope |
Deformation twinning in magnesium alloys strongly influences mechanical behavior, but quantifying local strain evolution during twin nucleation and propagation remains challenging. Here, we employ three-dimensional (3D) in-situ dark-field X-ray microscopy (DFXM) to characterize the emergence and growth of tensile twins in a Mg–4 wt.% Al alloy under uniaxial loading. We reconstruct 3D spatial maps of crystal orientation, elastic lattice strain, and twin morphology at 100 nm spatial resolution in two adjacent neighboring grains. By tracking twin impingement at grain boundaries, we quantify local strain redistribution and accommodation in neighboring grains as twin interfaces propagate. These observations illuminate micro-mechanical processes driving twin–grain boundary interactions and their influence on deformation pathways in magnesium alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Magnesium, Other |