About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
G-2: Characterization of Active Slip Systems in Mg-Y Alloys Via In Situ Micropillar Tension of Single- and Bi-Crystals |
| Author(s) |
Eunji Song, Amit Misra |
| On-Site Speaker (Planned) |
Eunji Song |
| Abstract Scope |
Mg alloys are promising candidates for lightweight structural materials in the automotive industry. However, low strength and ductility of Mg alloys limit their practical applications. Recently, yttrium has been widely added in Mg alloys because Mg-Y alloys exhibit enhanced ductility and activation of <c+a> dislocations under tension. However, the origin of <c+a> dislocations remains unclear, as Y segregation at grain boundaries makes it challenging to distinguish the individual effects of Y concentration and grain boundary characteristics on the deformation behavior.
In this study, we perform in situ micropillar tensile test under SEM using Mg-1wt.%Y and Mg-7wt.%Y. Single-crystal and bi-crystal micropillars are fabricated to investigate the effects of Y concentration and grain boundary characteristics on slip system activity. These results reveal that the role of Y element in promoting non-basal slip and enhancing grain boundary plasticity, providing insights into mechanisms of enhanced ductility of Mg-Y alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Mechanical Properties, Characterization |