About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Rapid Microstructure Analysis for Mapping Corrosion and Stress Corrosion Cracking Susceptibility in Al-Mg Alloys |
| Author(s) |
Josh Kacher |
| On-Site Speaker (Planned) |
Josh Kacher |
| Abstract Scope |
Al-Mg and other industrially-relevant alloys when exposed to elevated temperatures are susceptible to sensitization and subsequent stress corrosion cracking, leading to premature failure in many use conditions. This sensitization process has a complex dependency on local microstructural conditions, including grain size, grain boundary character, and dislocation structures. Electron backscatter diffraction is capable of rapid microstructure quantification, including dislocation characterization. When coupled with beta-phase identification through etching processes, statistical correlations between the local microstructure state and susceptibility to stress corrosion cracking can be established. In this talk, I will discuss our work exploring these correlations in Al-Mg alloys, with a particular focus on the influence of dislocation gradients on stress corrosion cracking susceptibility. I will also show results demonstrating how in situ liquid cell transmission electron microscopy experiments provide further insight into the mechanisms governing these local attack processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Environmental Effects |