About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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Presentation Title |
Molten Salt Corrosion of Ni-20Cr Model Alloy |
Author(s) |
Lingfeng He, Kaustubh Bawane, Xiaoyang Liu, Fei Teng, Weiyue Zhou, Laura Hawkins, Trishelle Copeland-Jonson, Yachun Wang, Michael Woods, Ruchi Gakhar, Daniel Murray, Phillip Halstenberg, Karen Chen-Wiegart, Shannon Mahurin, Sheng Dai, Michael Short, Lin Shao, Simon Pimblott, James Wishart |
On-Site Speaker (Planned) |
Lingfeng He |
Abstract Scope |
Molten Salt Reactors (MSRs) are leading candidates for next-generation nuclear reactors contributing to the US energy supply. One of the most critical challenges in the fruition of MSRs is the corrosion of salt-facing structural materials. To comprehend the corrosion behavior of commercial alloys and develop a corrosion mitigation strategy in MSRs environment, it is of significance to reveal the microstructure and microchemistry of simple model alloys in corrosion, radiation, and stress extremes. In this work, electron backscatter diffraction and electron tomography in a focused ion beam system, transmission electron microscopy, and synchrotron X-ray nano-tomography techniques are used to characterize the microstructural evolution of Ni-20Cr model alloys corroded in molten salts as a function of time and temperature. The mechanical degradation due to grain boundary corrosion is evaluated by in-situ micro tensile testing. The corrosion-induced defects play a dominant role in the failure mode of grain boundaries under corrosion with/without radiation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Environmental Effects, Mechanical Properties |