| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Peening Technologies to Mitigate Initiation and Resurgence of Stress Corrosion Cracking in Dry Cask Storage Stainless Steel Canisters |
| Author(s) |
John P. Lacy, Hwasung Yeom, Stan Bovid, Micheal Kattoura, Andrew Tieu, Willie Bloom , Jonathan Tatman, Kenneth Ross, Kumar Sridharan |
| On-Site Speaker (Planned) |
John P. Lacy |
| Abstract Scope |
Long-term storage of used nuclear fuel (UNF) is one of the key issues for sustainability of the current Light Water Reactor (LWR) fleet. The stainless-steel canisters used for storage in dry cask storage systems (DCSS) have a propensity for chloride-induced stress corrosion cracking (CISCC) due to combination of tensile stress at welds, susceptible microstructure, and corrosive chloride salt environment. This research is aimed at evaluating a variety of peening technologies, including, shot peening, laser shock peening, and pulsed water jet peening to mitigate initiation and growth of CISCC in DCSS canisters. Microstructural developments in the peened region including grain refinement and reorientation, deformation-induced martensite formation, and dislocation entanglements were examined. Compressive residual stress measurements and corrosion testing have been conducted to evaluate the effect peening has on pitting corrosion behavior and stress corrosion cracking. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Nuclear Materials, Sustainability |