About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
Understanding the Role of Alloying with Zn and Ca on Deformation Mechanisms during Fatigue in Mg Alloys |
| Author(s) |
Justin Smith, Aeriel Murphy-Leonard |
| On-Site Speaker (Planned) |
Justin Smith |
| Abstract Scope |
In this study, the deformation mechanisms of Mg-0.5Ca, Mg-2Zn, and Mg-2Zn-0.5Ca were investigated during fully reversed, low cycle fatigue. A unique methodology combining scanning electron microscopy (SEM), electron back scatter diffraction (EBSD), and in-situ loading was employed to understand the role Ca and Zn had on the activation of deformation twinning and detwinning during cyclic loading. EBSD-assisted slip trace analysis was used to quantify the active slip systems during low cycle fatigue. Results showed that in Mg-2Zn the initial crystallographic texture was such that the basal (0001) poles were normal to the loading direction promoting the activation of extension twinning during compressive loading. In Mg-0.5Ca and Mg-2Zn-0.5Ca, the strong basal texture was reduced, and deformation was mainly accommodated through non-basal slip modes (i.e., prismatic, pyramidal) slip during cyclic loading. However, deformation twinning was found in grains oriented with a c-axis normal to the loading direction. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, Mechanical Properties |