| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
3D Grain Interactions after Fatigue Loading in an Al-Li Binary Alloy via High Resolution X-ray Characterization Techniques |
| Author(s) |
Sven E. Gustafson, Wolfgang Ludwig, Katherine Shanks, Raquel Rodriguez-Lamas, Can Yildirim, Carsten Detlefs, Michael Sangid |
| On-Site Speaker (Planned) |
Sven E. Gustafson |
| Abstract Scope |
During cyclic loading, dislocations accumulate at microstructural features, such as grain boundaries, and will influence the surrounding microstructure; such structures of dislocations lead to intragranular variations of elastic strain and orientation. Historically, these intragranular variations have been difficult to probe experimentally without conducting measurements using destructive techniques, such as electron backscatter diffraction, and many such techniques are unable to measure elastic strain directly. In this study, high energy X-ray diffraction microscopy was conducted during high cycle fatigue loading of an Al-Li binary alloy. Individual grains were then probed by dark field X-ray microscopy to characterize their intragranular elastic strain and orientation. By spatially linking this intragranular characterization to the 3D specimen grain map and grain averaged elastic strains during loading, this study is able to provide insight into the effect neighboring grains have upon stress/strain localization at grain boundaries and its subsequent effect upon the fatigue performance of the material. |
| Proceedings Inclusion? |
Planned: |