About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Corrosion Behavior in Advanced Nuclear Reactor Environments III
|
| Presentation Title |
Simultaneous proton irradiation induced delocalization of liquid metal penetration in Fe-based alloys exposed to liquid Lead at 675°C |
| Author(s) |
Wande Cairang, Weiyue Zhou, Kevin B. Woller, Xing Gong, Michael P. Short |
| On-Site Speaker (Planned) |
Wande Cairang |
| Abstract Scope |
Study on the synergistic effects of radiation and corrosion of materials in liquid metals is important for the future deployment of advanced reactors. Irradiation is often found to accelerate corrosion in liquid metals. However, in this study, we have shown a scenario where simultaneous proton irradiation delocalizes initiation of liquid metal penetration on the surface of samples, while the depth of liquid metal penetration is not apparently enhanced. We have observed this irradiation-delocalized corrosion in several Fe-based alloys, including Fe-20Cr, SS316L, and Fe-25Ni-16Cr-4Al. Different approaches are conducted to analyze the surface and cross-sections of the samples to draw solid conclusions. To elucidate the underlying mechanism, both electron microscopy and DFT calculations were conducted, and we propose that irradiation-enhanced wetting and radiation-enhanced diffusion are contributing factors to this irradiation-delocalized corrosion in Fe-based alloys. Our study provides insight into simultaneous irradiation for reducing the risk of materials failing due to localized corrosion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Iron and Steel, Characterization |