| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Micro Hall-Petch Slope in Mg Alloys: The Influence of Grain Boundary Parameters |
| Author(s) |
Mohsen Taheri Andani, Aaditya Lakshmanan, Jeremy Yoo, Veera Sundararaghavan, John Allison, Amit Misra |
| On-Site Speaker (Planned) |
Mohsen Taheri Andani |
| Abstract Scope |
The Hall-Petch effect, also known as grain size strengthening, is a common method for increasing the strength of magnesium (Mg) alloys. According to several studies, the geometry and structure of grain boundaries (GBs) in polycrystalline materials substantially affect the Hall-Petch slope. Nevertheless, experimental results are constrained by the techniques' ability to measure the GB barrier strength to dislocation glide and validate these theories. In this study, a high-resolution electron backscatter diffraction technique is applied in conjunction with a dislocation pile-up model to measure the barrier strength of various GBs to different slip systems, known as the micro Hall-Petch slope in Mg-4Al. The method for including the micro Hall-Petch equation in crystal plasticity constitutive models that take into account the microstructural is provided. This study will shed light on the role of texture, grain size, and loading direction on the plasticity of Mg alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
ICME, Magnesium, |