About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cutting-Edge Characterization and Electrochemical Techniques for Unraveling Corrosion Phenomena
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| Presentation Title |
Whole-surface EBSD mapping for 1:1 correlation of grain structure and corrosion initiation |
| Author(s) |
Lucille V. Dentice, Nathan T. Gehmlich, Thang Duc Nguyen, Ronit Roy, Rebecca F. Schaller, Mychailo Toloczko, Maria A. Okuniewski, Janelle P. Wharry |
| On-Site Speaker (Planned) |
Lucille V. Dentice |
| Abstract Scope |
This talk elucidates correlations between SS 304 surface microstructure and the initiation of chloride-induced stress corrosion cracking (CISCC). CISCC is a failure mode of concern in dry cask storage systems for nuclear waste. While there exists a firm fundamental understanding of CISCC propagation behavior, there is relatively little literature on crack initiation and the so-called pit-to-crack transition. This study employs electron backscatter diffraction to preliminarily map the entire surface grain structure of an SS 304L weldment. After corrosion by MgCl2 under tensile strain at various time intervals, samples are remapped, and correlations are drawn between microstructure and emerging corrosion features. Pits and crack initiation are linked to particular grain structures, orientations, and interfaces. Implications for future experimental and modeling studies are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Environmental Effects, Characterization |