About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
Influence of Pre-Deformation on High Temperature Oxidation of a Model Fe-Cr-Ni Alloy in Pressurized Water Reactor Environments |
Author(s) |
Dallin J. Barton, Tingkun Liu, Cheng-Han Li, Matthew Olszta, Ziqing Zhai, Ferdinan C. Colin, Mychailo B. Toloczko |
On-Site Speaker (Planned) |
Dallin J. Barton |
Abstract Scope |
Stress corrosion cracking (SCC) is a potential degradation mode for stainless steels (SS) in pressurized water reactors (PWR), especially in components with unexpected imposition of excessive cold work. While several mechanisms have been proposed over the decades to explain SCC of SS in PWR primary water environments, crucial voids remain in experimental verification of any unified SCC theory. Part of this includes a lack of understanding of the influence of applied stress on modifying the oxidation behavior of SS in PWR-type coolants. We present a systematic study on the influence of prior applied deformation on the structure and composition of oxides formed on a model Fe-18Cr-14Ni alloy after being exposed to PWR primary water under tensile stress. Several nano-scale characterization tools elucidates the influence of deformation-induced microstructure on oxidation mechanisms. Specifically, we will discuss how deformation-induced defects enhances the outward cation diffusion, leading to larger oxide phase formation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, Environmental Effects |