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Meeting MS&T23: Materials Science & Technology
Symposium Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments IV
Presentation Title Effect of Solutes on the Radiation Induced Segregation in Ferritic Alloys at ∑3- grain Boundaries
Author(s) Azza Rahmouni
On-Site Speaker (Planned) Azza Rahmouni
Abstract Scope The local chemical changes at interfaces developed under irradiation affect the performance of in-core components, understanding such changes is of paramount importance. The effect of temperature and irradiation dose on solute’ intergranular segregation in Fe based alloys was reported. However, tendencies towards segregation of different solutes such as Cr and Ni in Fe at same type of interface has scarcely been investigated. This work seeks to delineate solute segregation profiles and their mechanism at Σ3-type grain boundaries (GB) in dilute Fe-3Cr and Fe-3Ni alloys after Fe5+ ion irradiation (2 dpa, 450C). Atom Probe Tomography, Transmission Electron Microscopy ,Transmission kikuchi Band methodology is employed correlatively to explore the local chemical and structural changes developed at the same Σ3 GB at atomic scale-level. The results obtained in this study demonstrated: (a) segregation profile changes with GB plane normal in Fe-3Ni alloy and (b) formation of α’ phase at Σ3GB.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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