About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
In-Situ SEM Tensile High-Resolution Electron Back Scatter Diffraction and Digital Image Correlation in Polycrystalline MgY alloys |
| Author(s) |
Lucero Lopez, Amit Misra, Eunji Song |
| On-Site Speaker (Planned) |
Lucero Lopez |
| Abstract Scope |
In this study, we perform an in-situ tensile test on Mg-1 (wt%) Y while coupling two techniques: High Resolution Electron Back Scattered Diffraction (HREBSD) and Digital Image Correlation (DIC). Together these techniques 1) quantify the evolution of Geometrically Necessary Dislocations and 2) characterize the complexities in the stress state in polycrystals under plastic deformation. In previous studies, it was reported that MgY alloys displayed < c+a > slip activation and exhibited superior ductility, but the mechanism to explain remains unclear. Non-Basal Pyramidal slip is required to accommodate slip motion in the c-axis and explains the increased ductility of Mg alloys. Additionally, the activation of Pyramidal slip must overcome a higher critical resolved shear stress (CRSS) as compared to basal slip. From this experiment we investigate the activation origin of Pyramidal slip and propose the influence of characteristics at the grain boundary such strain gradient and misorientation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, |