Integrating Multimodal Corrosion with Correlative Microscopy Across Multiple Length Scales

The corrosion behavior of light metal alloys is complex due to the simultaneous interaction of variables such as processing history, microstructure, corrosive environment, and temperature. Each of these factors contributes to corrosion damage at multiple length scales. This talk will focus on the combination of multimodal corrosion with multiscale imaging to probe the corrosion behavior of light metal alloys. This unique approach involves the simultaneous application of electrochemical methods such as Scanning Electrochemical Cell Microscopy (SECCM), in situ/ex situ imaging, and hydrogen collection. It is particularly beneficial to the study of complex heterogeneous microstructures (varying grain size, chemical composition, porosity, nature of oxide film) obtained during processes such as Friction Stir Processing and surface plasma treatment. Employing this approach correlatively over multiple length scales has aided in the identification of microstructural features that contribute to local and global corrosion damage.