About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Cold Spray Deposition for Mitigation and Repair of Stress Corrosion Cracking in Used Nuclear Fuel Storage Stainless Steel Canisters |
| Author(s) |
Hwasung Yeom, Nicholas Pocquette, Jonathan Tatman, Frank Pfefferkorn, Kumar Sridharan |
| On-Site Speaker (Planned) |
Hwasung Yeom |
| Abstract Scope |
Sustainability of the current light water reactor (LWR) fleet depends on long-term safe storage of used nuclear fuel (UNF). Presently, UNF is stored in stainless steel canisters in a dry cask storage system (DCSS). Since permanent geological repositories have not been identified, the UNF storage time in DCSS is expected to be multiple decades. A concern in the extended storage of UNF in DSCC is susceptibility to chloride-induced stress corrosion cracking (CISCC) in the welded regions of the canisters. This study investigates cold spray coatings of 304L and 316L stainless steel and nickel on substrates of both sensitized 304L and 316L stainless steels which are the most common canister materials. Select results of this study, including microstructural characterization and stress measurements of the coatings, and performance in boiling MgCl2 tests and electrochemical corrosion tests in NaCl solution, and evaluation of the crack repair capabilities will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Nuclear Materials, Environmental Effects |