|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||Mechanical and Corrosion Properties of Friction Surfaced 304L Stainless Steel for Crack Repair
||Hemant Agiwal, Hwasung Yeom, Kenneth Ross, Kumar Sridharan, Frank E. Pfefferkorn
|On-Site Speaker (Planned)
Friction surfacing has been evaluated for repairing chloride-induced stress corrosion cracks (CISCC) in stainless steel canisters for used nuclear fuel dry cask storage systems (DCSS). 304L austenitic stainless-steel rod was deposited over a substrate of the same material using a CNC machine tool using two different consumable rod diameters, 3/8” and 1/2” on clean and oxidized substrates. Friction surfacing on simulated through-cracks followed by helium leak testing demonstrated the feasibility of gas-tight repair. Closing of cracks at the interface between substrate and deposit was identified after microstructural analyses. Mechanical characteristics of these deposits using microhardness, bending, tensile, and adhesion testing methods were evaluated. Fractography and microstructure characterization was performed and a fine grain structure was observed in the deposited material. Corrosion performance of friction surfaced deposits were tested under ferric chloride solution for 72 hours, and bench-marked against the performance of a sensitized 304L uncoated plate tested under similar conditions.
||Additive Manufacturing, Iron and Steel, Surface Modification and Coatings