| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Directionally Isolated Sensitization Responses in 5XXX Series Aluminum Alloy Plate Microstructures |
| Author(s) |
Matthew A. Steiner, Likun Sun, Syeda Noor E Sumaiya |
| On-Site Speaker (Planned) |
Matthew A. Steiner |
| Abstract Scope |
The extent of intergranular corrosion in sensitized 5XXX series aluminum alloy plates is highly dependent on the geometric configuration of networked high-angle grain boundaries in the direction perpendicular to the exposed surface. Utilizing an adaptation of the Nitric Acid Mass Loss Test (NAMLT) standard commonly used to assess bulk (i.e. non-directional) sensitization in these alloys, we will present the isolated plate normal, transverse, and rolling direction intergranular corrosion responses from different rolled plate microstructures as a function of their time-temperature history. These directional responses will be shown to explain variations in the bulk measurements of nominally identical 5XXX series aluminum alloy plates produced by different suppliers. Lastly, we will highlight how the directional sensitization responses correlate with features of the grain boundary configurations in ways that render the microstructural data predictive of the intergranular corrosion behavior, with direct implications to stress corrosion cracking. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Environmental Effects, Aluminum |