| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
|
| Presentation Title |
Effects of Y Concentration on Mechanical Response of Mg-Y Alloys |
| Author(s) |
Xin Wang, Jiaxiang Wang, Kehang Yu, Timothy J. Rupert, Subhash Mahajan, Enrique J. Lavernia, Irene J. Beyerlein, Julie M. Schoenung |
| On-Site Speaker (Planned) |
Xin Wang |
| Abstract Scope |
The addition of rare earth elements has led to promising enhancement of the room temperature ductility of Mg. Further improvements in the mechanical properties of Mg alloys, however, will require a fundamental understanding of the effects of alloying elements on deformation mechanisms. The mechanical behavior of four basal-textured Mg-Y sheet alloys, with compositions of Mg-0.2Y, Mg-0.6Y, Mg-1Y and Mg-3Y (wt%), was studied in both tension and compression along the rolling direction, and in compression along the normal direction. The multi-directional deformation stress-strain curves and texture evolution were correctly reproduced by Visco-Plastic Self-Consistent (VPSC) modeling by incorporating twin-affected dislocation trapping rates. The combination of experiments and modeling yields a more comprehensive understanding of the effects of Y concentration on the activities of slip and twinning modes, which were further validated by transmission electron microscopy (TEM). |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |