|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Cold Spray Process to Combat Potential Stress Corrosion Cracking in Used Nuclear Fuel Storage Stainless Steel Canisters
||Nicholas Pocquette, Hwasung Yeom, Hemant Agiwal, William Bowman, Kenneth Ross, John Kessler, Gary Cannell, Frank Pfefferkorn, Kumar Sridharan
|On-Site Speaker (Planned)
Cold Spray technology has been investigated as a method for the repair and mitigation of chloride induced stress corrosion cracking (CISCC) in 304L and 316L stainless steel canisters used to store spent nuclear fuel in dry cask storage systems (DCSS). The cold spray process is powder-based, solid-state method for producing high-density coatings and deposits. The compressive residual stresses and fine grain structure of the coatings is expected to mitigate the initiation and growth of CISCC. The substrates in this study were 304L and 316L and coating materials were 304L, 316L and nickel. The cold spray coatings were deposited on flat and curved geometry samples. The CISCC mechanism in the cold spray deposits were examined using the boiling MgCl2 tests and compared to that of the uncoated samples. Electrochemical corrosion studies were conducted to characterize pitting behavior and stability of the surface passivation layer, phenomena that contribute to initiation of CISCC.
||Additive Manufacturing, Powder Materials, Surface Modification and Coatings