|About this Abstract
||MS&T23: Materials Science & Technology
||Interface-mediated Phenomena in Structural Materials
||Mechanistic-design of Advanced Hierarchical Ti-Ti2AlC Metal-MAX Multilayered Nanolaminates
||Skye Supakul, Sid Pathak, Krishna Yaddanapudi, Garritt Tucker
|On-Site Speaker (Planned)
We discuss the deposition, microstructure, and mechanical properties of 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 magnetron sputtering, as well as a combinatorial atomic layer deposition and magnetron sputtering physical vapor deposition system that enables deposition without breaking the chamber vacuum to explore various pathways to deposit MMN. Among our attempts, we report the first successful depositions of MMN. We describe the challenges associated with deposition and our solutions to overcome these challenges. Microstructural characterizations using X-ray diffraction and transmission electron microscopy elucidate the different microstructures, and preliminary nanoindentation and micropillar compression were used to evaluate their mechanical properties. Preliminary micropillar compression from our latest deposition demonstrates high instability stresses of 8.1±0.2GPa, significantly higher than constituent components.