About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Strength and deformability in nanolaminates containing thick 3D Interfaces |
Author(s) |
Nathan A. Mara, Mauricio De Leo, Nicolas Fuchs-Lynch, Justin Y. Cheng, Shuozhi Xu, Benjamin Derby, Irene Beyerlein |
On-Site Speaker (Planned) |
Nathan A. Mara |
Abstract Scope |
Bimetallic nanolamellar composites have been studied extensively to probe the influence of interface structure on mechanical properties in nanocrystalline alloys. We have shown that Cu/Nb nanolaminates incorporating 3D interfaces (3D Cu/Nb, 3D Ti/Nb) containing chemical, crystallographic, and structural nanoscale heterogeneities in all spatial dimensions have remarkable strength and deformability compared to 2D interface counterparts (2D Cu/Nb) under in situ micropillar compression normal to interface planes. In this work, we combine compression results at normal and 45° inclination to interfaces to show that 3D Cu/Nb behaves more isotropically than 2D Cu/Nb and that 3D interfacial shear strength exceeds that of 2D interfaces. We discuss the microstructural origin of high strength and deformability in 3D Cu/Nb in terms of dislocation-interface interactions at the atomic and nano scales using Phase Field Dislocation Dynamics to model dislocation transmission across nanolaminate bimetallic interfaces. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, Nanotechnology |