| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2025
|
| Presentation Title |
Experimental investigation on twinning behavior in Mg-Y alloys |
| Author(s) |
Qianying Shi, John Allison |
| On-Site Speaker (Planned) |
Qianying Shi |
| Abstract Scope |
Available deformation modes in Mg are inherently limited by HCP structure. The lower critical resolved shear stress for basal slip and extension twinning makes them become the predominant deformation modes in Mg. While the most outstanding effect of Y addition in Mg is activating non-basal slip such as pyramidal <c+a> dislocations, the influence of Y on twinning behavior is of great interest since twinning significantly affects the mechanical behavior of Mg by accommodating deformation along c-axis. In this study, two Mg-Y alloys (Mg-1wt.%Y and Mg-7wt.%Y) were investigated through monotonic and cyclic loading. Our initial results indicate that a high level of Y addition promotes a second type of extension twins {112 ̅1} in addition to the most common {101 ̅2} extension twins. More in-depth analysis on twin features is being conducted. This work is being integrated with the predictive modeling of deformation behavior for designing Mg alloys with desired properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Magnesium, Mechanical Properties |