| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Studies of Metal-Ceramic Nanolaminates with Laser-Induced Microprojectile Impact |
| Author(s) |
Jianxiong Li, Qi Tang, Mostafa Hassani |
| On-Site Speaker (Planned) |
Jianxiong Li |
| Abstract Scope |
Metal-ceramic nanolaminates offer high strength and toughness due to the combination of the nanocrystalline compliant metal and stiff ceramic phases. While the deformation mechanisms of these nanolaminates under quasi-static stress conditions has been extensively studied, their deformation mechanisms under high strain rates are not well understood. Here we conduct microprojectile impact experiments and nanoindentation to study the mechanical behavior of a model metal-ceramic nanolaminates with a range of layer thicknesses and over a wide range of strain rates, spanning from 10^(-1) to 10^8 s^(-1). In contrary to the increased strain rate sensitivity often observed for traditional nanocrystalline metals, we report decreasing strain rate sensitivity under ultra-high strain rate conditions as the layer thickness decreases. We discuss this behavior on the basis of dislocation physics in the materials. This work provides a basis for tailored design of high performance nanolaminates under high strain rate plastic deformation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Ceramics, Other |