About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
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Presentation Title |
E-10: Microstructural Characterization of Harvested High Dose Zorita Light Water Reactor Internals by Atom Probe Tomography and High-resolution TEM |
Author(s) |
Sohail Shah, Mukesh Bachhav, Boopathy Kombaiah, Cameron Howard, Fei Teng, Yachun Wang, Jason Daniel |
On-Site Speaker (Planned) |
Sohail Shah |
Abstract Scope |
Austenitic stainless steel (SS) has been widely used in light water reactors (LWRs) as core structural components due to its high strength and toughness even at high radiation doses. The operability of SS highly depends on understanding and predicting how the mechanical properties and dimensional stability change over time. Here, we use irradiated 304 SS components that were harvested from the Zorita reactor in Spain to understand the microstructural changes occurring when irradiated to 15 displacement per atom (dpa) and 50 dpa. We will present a combined atom probe tomography (APT) and transmission electron microscopy (TEM) analyses to reveal radiation-induced precipitation and segregation at grain boundaries, extended defects such as dislocation loops and voids in 304SS as a function of irradiation dose. We correlate the microstructural characteristics of the irradiated 304SS to the mechanical properties estimated using micro-tensile testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Mechanical Properties, Characterization |