About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Aging and Compatibility: Experimental and Computational Approaches to Enable Lifetime Predictions
|
| Presentation Title |
Microstructure Sensitive Pitting Corrosion and Film Degradation Modeling of Brass in Potable Water |
| Author(s) |
Harry Smith, Ian Smith, William Musinski |
| On-Site Speaker (Planned) |
Harry Smith |
| Abstract Scope |
This study presents a microstructure-sensitive 3D phase-field corrosion modeling framework for predicting the lifetime of brass in potable water systems. The initialization and growth of pits are microstructurally sensitive in the model and provide insight to multi-year material degradation. Allen-Cahn, Cahn-Hilliard, and Kim-Kim-Suzuki models were integrated using the open-source Multiphysics modeling suite, MOOSE. Accelerated corrosion experiments were conducted using a potentiostat for calibration and validation of the model, emulating 25 years of corrosion. Electron backscatter diffraction data of pre- and post-corrosion samples were collected to home in the microstructure sensitive parameters. Confocal microscopy data were collected for corroded specimens to account for pit size, distribution, and depth characteristics in the model. This corrosion modeling pushes the current state of the art by combining microstructure sensitivity, protective film breakdown, and pitting into a comprehensive model. This novel microstructurally-aware corrosion degradation prediction framework accelerates design of advanced materials that are more corrosion-resistant. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Environmental Effects, Modeling and Simulation |