| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Pitting Corrosion Analysis on Austenitic Stainless Steel Welds in Brine for Understanding of Chloride-induced Stress Corrosion Cracking of Spent Nuclear Fuel Dry Storage Canisters |
| Author(s) |
Seunghyun Kim, Gidong Kim, Chang-Young Oh, Ji Hyun Kim, Sang-Woo Song |
| On-Site Speaker (Planned) |
Gidong Kim |
| Abstract Scope |
This study aims to investigate pitting corrosion behavior of gas-tungsten arc welded (GTAW) austenite stainless steels in brine. The austenitic stainless steels (e.g., 304L, 316L) have been considered as a promising candidate material for spent nuclear fuel dry storage canisters. By the combination of decay heat from stored fuels, deliquescence of salts by humidity from flying seawater, and residual stress from welds, chloride-induced stress corrosion cracking (CISCC) has been considered as potential threat in long-term service of the system. As pitting corrosion is known as to initiate CISCC, we investigated the pitting corrosion behavior of the stainless steels in brine condition. Specimens were manufactured by GTAW and the pitting corrosion was analyzed by multiple electrochemical techniques. The effects of microstructure, residual stress on pitting corrosion will be further investigated. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |