About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Behavior at the Nanoscale VII
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Presentation Title |
Deposition of Hierarchical Ti/Ti2AlC Metal/MAX Multilayered Nanolaminates and Investigating their Mechanical Properties and Deformation Mechanisms |
Author(s) |
Skye Supakul, Sid Pathak, Garritt Tucker |
On-Site Speaker (Planned) |
Skye Supakul |
Abstract Scope |
We report the challenges (e.g. the diffusion and formation of MAX phase) with the high temperature synthesis of a hierarchical metal/MAX phase multilayered nanolaminate (MMN) where the interface between metal and MAX phase layers are in direct competition with the internal interfaces within the MAX layers. Using a combinatorial physical vapor deposition (PVD) and atomic layer deposition (ALD) system, we report our first successful deposition of a Ti/ Tin+1AlCn (n=1 or 2) MMN where thin Al2O3 diffusion barrier layers inhibits interlayer diffusion and enables the multilayered architecture to be retained. The mechanical properties of the MMN system show impressive indentation hardness (12.75±0.33GPa), micro-pillar instability stresses (8.1±0.2GPa), and instability strains (8.3±0.4%) compared to a rule-of-mixtures approximation of the hardness and yield strength of the system. Post compression TEM analysis is also being conducted to gain insight on the deformation mechanisms at play in these hierarchical MMN systems. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Mechanical Properties, Characterization |