About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
Mechanistic Design of Advanced Hierarchical Ti-Ti2AlC Metal-MAX Multilayered Nanolaminates |
Author(s) |
Skye Supakul, Krishna Yaddanapudi, Garritt Tucker, Sid Pathak |
On-Site Speaker (Planned) |
Skye Supakul |
Abstract Scope |
We investigate the deposition, microstructure, and mechanical properties of unique hierarchical multilayered metallic (Ti) and MAX phase (TI2AlC) Nanolaminate (MMN) systems where the interface between metal and MAX phase layers are in direct competition with the internal interfaces within the MAX layers. We utilize a unique twin chamber atomic layer deposition and physical vapor deposition system that enables deposition in both chambers without breaking the chamber vacuum to explore various pathways to deposit MMN while minimizing the interlayer diffusion of atomic species. Transmission electron microscopy investigations confirm the presence of TI2AlC and Ti layers, and selected area electron diffraction analysis reveals the nanocrystalline nature of the deposited layers. Subsequent micro-pillar compression demonstrates an ~150% increase in stress across ~10% strain after yield compared to micro-compression on nanocrystalline Ti3AlC2 MAX phase which demonstrated an ~110% increase in stress across only ~1% strain after yield, suggesting higher strain accommodation in the MMN. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Mechanical Properties, Characterization |