| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
|
| Presentation Title |
Morphological Evolution of Phase-separated Domains in Vapor-deposited Polycrystalline Alloy Films |
| Author(s) |
Rahul Raghavan, William Farmer, Kumar Ankit |
| On-Site Speaker (Planned) |
Rahul Raghavan |
| Abstract Scope |
Physical vapor deposited nanostructured alloy films yields characteristic self-assembled morphologies with vertical, lateral, or random concentration modulations depending on the deposition rate and temperature. However, the role played by grain boundaries in the formation of any of these nanostructures is not well understood. Here, we employ a phase-field approach that couples composition and orientation order parameters to investigate phase separation and grain boundary evolution in polycrystalline alloy films. Based on parametric studies, we assess the effect of grain coarsening and orientation in the formation of characteristic periodic patterns. Finally, we construct morphology maps to indicate the possibility of new nanostructured variants in polycrystalline films. Insights gained from our investigation will establish the groundwork for new pathways to morphological and grain size control in polycrystalline alloy films. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |