About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Dynamic Compressive Response of Highly-oriented MAX Phases under Planar Confinement |
Author(s) |
Xingyuan Zhao, Tarek Elmelegy, Maxim Sokol, Michel Barsoum, Leslie Lamberson |
On-Site Speaker (Planned) |
Xingyuan Zhao |
Abstract Scope |
MAX phases are layered ternary carbides and nitrides comprising of early transition metals (M), A group elements (A), and carbon and nitrogen (X). They are typically comprised of plate-like grains and combine advantageous properties of both metals and ceramics such as damage tolerance and a useful combination of toughness and strength. In the MAX phases only basal slip is active under ambient temperatures that in turn leads to ripplocation formation, buckling and kink-band formation. In this work, we use highly-oriented MAX phases to investigate the influence of grain orientation, material composition, and confinement on the dynamic compressive behavior of these layered materials. Their associated failure mechanisms will also be discussed. Experimental observations on our samples suggest that high loading-rates and confinement both increase the overall compressive failure stress. Modeling on MAX phases and other layered materials suggests that confinement plays a critical role and increases kink mode and nucleation stress. |
Proceedings Inclusion? |
Planned: |
Keywords |
Ceramics, Mechanical Properties, Other |