About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Materials and Chemistry for Molten Salt Systems
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Presentation Title |
Effects of Molten Salt Corrosion Associated with Proton Irradiation on the Micro-tensile Strength of Grain Boundaries in a Ni-20Cr Alloy |
Author(s) |
Fei Teng, Weiyue Zhou, Yachun Wang, Daniel Murray, Michael Short, Lingfeng He |
On-Site Speaker (Planned) |
Fei Teng |
Abstract Scope |
Corrosion in molten salts is usually proceeded by selective leaching of Cr from the alloys into the salts. For molten salt reactor application, it is important to understand how radiation damage/corrosion changes the failure behavior of grain boundary for evaluating the mechanical stability of materials under such extreme conditions. To address this, in situ scanning electron microscopy push-to-pull test was performed on the grain boundary of a Ni-20Cr alloy, which was simultaneously proton irradiated and corrosion treated. The grain boundary strength under both corrosion and corrosion/radiation conditions was tested. The grain boundaries under corrosion/radiation conditions show lower yield strength and longer total elongation compared to those only under corrosion. Radiation has likely modified the distribution of free volumes due to corrosion, which can be a possible explanation behind the observed trend. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Copper / Nickel / Cobalt, Mechanical Properties |