| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Temperature-controlled Friction Stir Welding: A Potential Crack Repair Technology for 304L Stainless Steel Spent Nuclear Fuel-dry Storage Canisters (SNF-DSC) |
| Author(s) |
Saumyadeep Jana, Indrajit Charit, Krishnan Raja, Madhumanti Bhattacharyya, Anirban Naskar |
| On-Site Speaker (Planned) |
Saumyadeep Jana |
| Abstract Scope |
Dry storage canisters for storing spent nuclear fuel rods are usually fabricated from 304L austenitic stainless steels, since it offers excellent resistance to atmospheric corrosion. However, 304L SS is susceptible to pitting corrosion when exposed to chloride containing environments. Chloride-induced stress corrosion cracking (CI-SCC) can lead to early crack nucleation around heat affected zones and fusion weld seams in 304L SS. Thus, it is critical to eliminate any such cracks for a SNF-DSC to perform reliably. In the present study, the feasibility of Friction Stir Welding (FSW), as a low-temperature crack repair method has been explored. Multiple temperature-controlled FSW runs were carried out on 0.5” thick 304L SS plates in a gantry-type machine using a PCBN tool. Weld parameters were optimized to achieve weld temperatures that range from ~700°C to 900°C. The presentation will provide a summary of various characterization details (microstructural, mechanical, electrochemical etc.) of these temperature-controlled welds. |
| Proceedings Inclusion? |
Undecided |