About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
J-20: Modeling the Interactions between a Solidification Front and Nanoparticles Using a Phase-field Model |
Author(s) |
Zachary Croft, Alexander Mensah, Jaime Perez Coronado, Shanmukha Kiran, Jonathan Goettsch, Alan Taub, Ashwin Shahani, Katsuyo Thornton |
On-Site Speaker (Planned) |
Alexander Mensah |
Abstract Scope |
Aluminum alloy strength and temperature stability can be greatly improved by incorporating hard nanoparticles, such as carbides, creating a metal-matrix nanoparticle-reinforced composite (MMNC). The enhancement of the MMNC properties relies on the homogeneous distribution of particles throughout the matrix. The solidification fronts in the metal can either push the nanoparticles or engulf them depending on the solidification condition and material parameters. In this study, we conduct phase-field simulations to model the interaction between the solidification front and nanoparticles. We employ this model to understand how solidification front velocity, particle size, and particle morphology affect the spatial distribution of nanoparticles in the solidified MMNC. By including tens of particles, we simulate the clustering of particles as they are pushed by the solidification front, eventually leading to a condition favoring engulfment. The simulation predictions are compared to experimental microstructures for parameterization and validation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Solidification, Computational Materials Science & Engineering |