ProgramMaster Logo
Conference Tools for MS&T23: Materials Science & Technology
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T23: Materials Science & Technology
Symposium Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments IV
Presentation Title STEM-based Mapping of Nanoscale Point Defects Produced via Temperature, Irradiation, And Corrosion
Author(s) Sean H. Mills, Steven Zeltmann, Peter Ercius, Aaron Kohnert, Blas Uberuaga, Andrew Minor
On-Site Speaker (Planned) Sean H. Mills
Abstract Scope Structural metals used in nuclear reactor environments are exposed to coupled extremes such as high temperature, irradiation, and corrosion which act synergistically to degrade material performance. These processes are directly limited or accelerated by nanoscale point defects such as vacancies, interstitials, and voids. Quantifiable methods of elucidating formation of point defects and their role in diffusion kinetics and material failure, have been limited to bulk or ex-situ measurements. Development of 4D-STEM via high-speed direct electron detectors provides opportunities to map distributions of nanoscale features. Here, we explore model metal systems by measuring point defects (with 4D-STEM) produced under equilibrium conditions (thermal cycling), and non-equilibrium conditions such as knock-on electron beam damage, proton irradiation, and molten salt corrosion. Measurements of irradiation and corrosion defects at high spatial resolution advances our understanding of complex molten salt reactor environments, thereby providing a pathway for engineering materials designed in future nuclear energy systems.


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

Questions about ProgramMaster? Contact