About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
Deformation Behavior and Microstructural Characterization of Pure Mg Deformed by Nanoindentation |
Author(s) |
Yi-Cheng Lai, Yuwei Zhang, George Pharr, Kelvin Xie |
On-Site Speaker (Planned) |
Yi-Cheng Lai |
Abstract Scope |
Dislocations and twinning play important roles in the deformation of Mg. However, there are few detailed microstructural observations to identify deformation mechanisms beneath the indented surface at the dislocation level. In this work, we employed TEM and precession electron diffraction to reveal the dislocation characteristics (e.g., types and distribution) at two indentation depths in two grains of Mg with different orientations. After indentation, well-defined plastic zones are observed, the size of which is discussed and correlated to the indentation depth and crystal orientation. The new knowledge generated in this work enables us to advance our understanding of the indentation size effect and the mechanisms of plastic deformation in Mg. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnesium, Mechanical Properties, Other |