| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
A Quantitative Study of Slip Band-Grain Boundary Interactions in Mg Alloys |
| Author(s) |
Mohsen Taheri Andani, Aaditya Lakshmanan, Veera Sundararaghavan, John Allison, Amit Misra |
| On-Site Speaker (Planned) |
Mohsen Taheri Andani |
| Abstract Scope |
Understanding dislocation interactions with grain boundaries (GBs) is key to assess the strengthening in metallic materials. Among studies to quantify such phenomena and their effects on the mechanical properties, the microscopic Hall-Petch relationship has been proposed which claims that the flow stress of a slip system is inversely proportional to the square root of the grain size. Despite some theoretical analysis dedicated to studying the role of GB parameters on the flow stress of a slip system, the experimental capability to measure the stress-field induced by dislocations blocked by a GB and its subsequent effect on the flow stress is still limited. The objective of this work is to utilize high-resolution electron backscatter diffraction technique combined with a dislocation pile-up model to estimate the microscopic Hall-Petch coefficients for different GB type. This research will provide new insights into the understanding of the GB effect in the plasticity of Mg alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |