|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications III
||Cold Spray Stainless Steel Deposition to Mitigate CISCC in Canisters for Used Nuclear Fuel Storage
||Nicholas Pocquette, Hwasung Yeom, Hemant Agiwal, Kenneth Ross, John Kessler, Gary Cannell, Frank Pfefferkorn, Kumar Sridharan
|On-Site Speaker (Planned)
The cold spray materials deposition process is being investigated for mitigation of chloride-induced stress corrosion cracking (CISCC) in Dry Cask Storage Systems (DCSS). DCSS are used for interim storage of spent nuclear fuel. The welded austenitic stainless-steel canisters are under tensile stress and susceptible to environmental chloride corrosion which leads to the formation of CISCC after long term exposure. Cold spray is a low heat input, solid state coating process being considered as a mitigation approach for the initiation and growth of CISCC. The coatings are under compressive stresses and act as an environmental barrier against a Cl-rich environment. Thickness, microstructure, adhesion, hardness, and residual stress in the cold spray stainless steel coatings on stainless steel samples with prototypical CISCC produced by boiling MgCl2 tests will be presented. The results of this study along with gas permeability of the cold spray coatings will be discussed.