About this Abstract |
Meeting |
MS&T25: Materials Science & Technology
|
Symposium
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Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments VI
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Presentation Title |
Corrosion of Ni-based alloys in Light Water
Reactor Environment: An In-situ Bragg Coherent
Diffraction Imaging approach |
Author(s) |
Sayantan Mondal, David Simonne, Riley Hultquist, Ericmoore Elijah Jossou |
On-Site Speaker (Planned) |
Sayantan Mondal |
Abstract Scope |
Structural materials such as stainless steel and nickel-based alloys, used in industrial pressure vessels and nuclear reactors, are routinely exposed to extreme environments characterized by high temperatures, irradiation, mechanical stresses, and corrosive conditions, including corrosion, radiolysis, and hydriding media. These challenges require immediate attention to ensure the life extension of existing light water reactors (LWRs) and the successful deployment of the next generation of reactors. In this work, we present results from Bragg Coherent Diffraction Imaging (BCDI) to investigate the temporal evolution of corrosion-induced lattice defects in a model Ni-based alloy under simulated LWR conditions. This talk will highlight the formation of lattice defects during prolonged exposure to normal water chemistry, as well as the radiolytic effects of the intense X-ray beam used during the BCDI measurements. These fundamental insights will inform the design of corrosion-resistant alloys, extending service lifetimes and improving the cost effectiveness of reactor operations. |