About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Quantitative Inference of the Mobility Coefficient in the Cahn-Hilliard Equation from a Model Experiment |
Author(s) |
Zirui Mao, Michael Demkowicz |
On-Site Speaker (Planned) |
Zirui Mao |
Abstract Scope |
A common challenge in phase-field modeling using the Cahn-Hilliard equation is the determination of the mobility coefficient, which controls the kinetics of microstructure evolution. We propose an approach for inferring the mobility coefficient from a simple model experiment. We find that the product of mobility and the coefficient of the uniform free-energy term may be inferred uniquely based on three quantities that may be measured experimentally from the microstructure evolution of the proposed model experiment. If the free energy coefficient is determined by other means (e.g., form thermodynamic models), then the mobility may be calculated, as well. We conclude with a discussion of ongoing efforts to carry out the proposed model experiment. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Modeling and Simulation, Computational Materials Science & Engineering |