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Meeting MS&T23: Materials Science & Technology
Symposium Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments IV
Presentation Title Four-dimensional Scanning Transmission Electron Microscopy (4D-STEM) Characterization of Intergranular Corrosion of Austenitic Stainless Steels in Lead-bismuth Eutectic
Author(s) Yang Yang, Zhiyu Zhang, Sarah Y Wang, Peter Hosemann, Andrew M Minor
On-Site Speaker (Planned) Zhiyu Zhang
Abstract Scope Lead-bismuth eutectic (LBE) is a highly efficient liquid metal coolant with promising applications in advanced nuclear reactors. However, the corrosive nature of LBE on various nuclear-grade steels presents a significant challenge for its implementation in actual nuclear reactors. Previous studies have shown that deformation-induced twin boundaries can accelerate the penetration of LBE into steel. In our research, we employed 4D-STEM to investigate the intergranular corrosion of austenitic stainless steel by LBE at the nanoscale. By analyzing 4D-STEM data, we generated a series of virtual bright-field and dark-field images and performed advanced quantitative analyses, such as strain mapping and orientation mapping. These analyses provided a more comprehensive understanding of the corrosion mechanism and helped visualize the damage along grain boundaries. Our study contributes to a deeper understanding of the LBE corrosion in austenitic stainless steels, crucial for developing mitigation strategies and promoting the safe implementation of LBE in advanced nuclear reactors.


Accelerated Assessment of Microstructure-Mechanical Property Relationships in Ni Based Superalloys
Accelerated Creep Testing for High-Temperature and Nuclear Applications
Advanced In-situ Strain Mapping for Zr Oxidation by 4D-STEM
Assessing the Ability of Nuclear Fuel Performance Codes to Predict Radially Resolved Properties in Oxide Fuels
Capturing 3D Evolution of Twin Networks in Titanium as a Function of Applied Strain
Effect of Solutes on the Radiation Induced Segregation in Ferritic Alloys at ∑3- grain Boundaries
Effect of Strain Rate on Tensile Properties of C250 Maraging Steel
Enabling Multiscale Materials Characterization with Machine Learning
Four-dimensional Scanning Transmission Electron Microscopy (4D-STEM) Characterization of Intergranular Corrosion of Austenitic Stainless Steels in Lead-bismuth Eutectic
High-Temperature Irradiation Behavior of Piezoelectric Aluminum Nitride
In Situ SEM Nanomechanics at Cryogenic Temperatures
Interdiffusion Behaviour of UN with Zircaloy-4 via Diffusion Couple Studies
M-1: Novel Method for Fabricating and Analysis of 3D Printed Composite for Radiation Shielding Containing Metalized Halloysite Nanotube
Mapping Elemental Distributions Across Thin Corrosion Films Formed on Nuclear Reactor Core and Structural Materials via Ex-situ And In-situ Atom Probe Tomography
Multimodal Characterization of Materials Corrosion in Molten Salts
Phase Stability of Delta-ZrH Under Ion Irradiation
Probing Nanoscale Properties of Radioactive Material by Advanced Correlative Microscopy
STEM-based Mapping of Nanoscale Point Defects Produced via Temperature, Irradiation, And Corrosion
Structural Stability of REE-PO4 (REE=Sm,Tb) under Swift Heavy Ion Irradiation
Thermodynamic Modeling and Calculation of Phase Formation Processes Under Irradiation Conditions of Uranium-plutonium Nitride Fuel
Transition Metal Carbonitride Materials Exposed to Swift Heavy Ions

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