|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Relating localized corrosion rates to microstructure in pure Al exposed to salt water environments
||Bruno Geoly, Frank Yu, Devon Phelps, Joseph Stover, Michael Melia, Philip Noell, Josh Kacher
|On-Site Speaker (Planned)
Pitting corrosion is a form of localized corrosion that, while small in terms of volume corroded, can have an outsized influence on degradation and failure of metals and alloys. Our research focuses on understanding the rate at which corrosive pits grow over time as a function of microstructure. Specifically, we examine the relationship between microstructure and pitting corrosion rates in pure Al exposed to salt water environments by combining in situ optical microscopy corrosion experiments with electron backscatter diffraction (EBSD) analysis. From the EBSD data, we calculate the crystallographic orientation, nearby grain boundary characteristics, and the local geometrically necessary dislocation density and compare these factors to corrosion pit morphology and growth rates. This work is supported by Sandia National Laboratories (SNL). SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.
||Aluminum, Environmental Effects,