| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Interface mechanics of metallic nanomultilayers |
| Author(s) |
Vladyslav Turlo |
| On-Site Speaker (Planned) |
Vladyslav Turlo |
| Abstract Scope |
Nanomultilayers (NMLs) with designed interfaces are promising for advanced applications due to their unique properties. However, intrinsic stresses inevitably develop during the growth of NMLs and thus need to be controlled. Using Cu/W NMLs as a model system, we employed atomistic simulations with a chemically-accurate neural network potential to study intrinsic stresses and mechanical response at heterogeneous interfaces. Our findings reveal how interfacial intermixing and metastable phase formation significantly affect interface stress, explaining the experimentally observed transition from compressive to tensile stress states as a function of NML deposition conditions. Simulations also show that microstructure, especially excess free volume from porosity and interface disorder, significantly impacts the mechanical properties of Cu/W NMLs, such as Young's modulus. These insights advance the understanding of interface physics governing deformation mechanisms in nanostructured materials, emphasizing interface design for optimizing performance and developing high-performance materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Thin Films and Interfaces, Mechanical Properties |