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 Influence on the Intergranular Corrosion of Aluminum Alloys by Integrating Experimental Data and Microstructure Incorporated Computational Modeling |
| Author(s) |
Mohammad Umar Farooq Khan, Leila Saberi, I-Wen Huang, Soheil Soghrati, Christopher Taylor |
| On-Site Speaker (Planned) |
Mohammad Umar Farooq Khan |
| Abstract Scope |
To predict intergranular corrosion (IGC) in 6XXX aluminum alloys under different tempers, this study proposes a parametric study using a time-independent and a time-dependent finite element (FE) analysis. Additionally, integrated computational materials engineering is used for complemented integration of experimental corrosion data of different phases including matrix and intermetallic precipitates. For the FE analysis, COMSOL Multiphysics is employed to model the electrochemical current distribution through activation overpotentials across the electrode surfaces in an electrolytic cell. To capture the IGC evolution while monitoring the evolving interface, the phase field model is utilized for the time-dependent study. The microstructure is characterized by features such as precipitate distribution at the grain boundaries and the width of precipitate free zone, as a function of the composition and heat treatment. The microstructure is validated through the FE analysis. The influence of environmental factors such as pH on the IGC behavior will also be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Aluminum, Environmental Effects |