About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Heterostructured and Gradient Materials (HGM V): New Mechanistic Discoveries Enabling Superior Properties
|
Presentation Title |
Understanding Interfacial Kinetic Processes during Sintering to Enable Heterostructuring |
Author(s) |
Fadi Abdeljawad, Omar Hussein, Keith Coffman, Eric Lang, Khalid Hattar, Shen Dillon |
On-Site Speaker (Planned) |
Fadi Abdeljawad |
Abstract Scope |
Recent advances in sintering-based manufacturing have enabled the fabrication of hierarchical microstructures with intricate nanoscale features. Examples include nanolattices, nanoporous materials, and stochastic nanostructures. Microstructure here refers to grain and pore size and spatial distributions and pore network topology. In this context, porosity is not treated as an undesired defect, but rather a feature that can be tailored for specific applications. For example, porous microstructures with high surface-to-volume ratio are desired for their electrochemical activity. Herein, we present recent work aimed at understanding interfacial kinetic processes that govern microstructure formation and evolution during nanoscale sintering. Atomistic simulations reveal large variations in sintering rates as a function of grain boundary geometry. Theoretical and computational studies demonstrate the paramount role of local particle packing in coarsening and densification rates and interfacial instabilities during nanoscale sintering. Our work provides much needed process-structure linkages related to the processing of heterostructured materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Thin Films and Interfaces, Nanotechnology |