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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Nanostructured Materials in Extreme Environments II
Presentation Title Design of Vanadium Alloys for Fusion Applications
Author(s) Daniel Ng, Malik Wagih, Tianjiao Lei, Christopher Schuh
On-Site Speaker (Planned) Daniel Ng
Abstract Scope A fine, stable grain size is desirable for structural metals used in fusion reactors, as it can simultaneously increase strength and provide sinks for radiation-induced defects. Solutes with a thermodynamic preference to segregate to grain boundaries can stabilize them, making this a prime consideration for alloy design. However, there are limited solute segregation data on candidate fusion alloys such as vanadium, which is of interest for its low neutron activity and high thermal stress factor. This talk overviews a combined machine learning and molecular mechanics framework developed to calculate grain boundary segregation energy spectra from ab initio methods, enabling predictions of solute segregation strength in vanadium-base binary alloys across the periodic table. Select nanocrystalline alloys were synthesized through powder metallurgy, with their solute distribution and thermal stability characterized to validate computational predictions. The role of segregating species on other important engineering factors, including properties and processability, are also discussed.
Proceedings Inclusion? Planned:
Keywords Nuclear Materials, Computational Materials Science & Engineering, Characterization


A new Class of Dynamically Recrystallized Oxide Dispersion Strengthened Steel (DRX-ODS Steel) by Solid Phase Processing
Advanced Nanometer Resolution In-situ Strain Mapping for Metal Oxidation by 4D-STEM
B-9: Composition Dependent Irradiation Resistance Behavior in Chemically Complex Alloys
Bias and Void Swelling in Irradiated α-iron Using Mesoscale and Atomistic Simulations
Continuum Theory of Defects as a Framework for Predictive Modeling of Radiation Effects in Crystalline Solids
Defect Engineering of Structural and Chemical Short-range Order to Enable Materials for Extreme Environments
Deformation Mechanisms and Radiation Resistance of Gradient Alloys
Design of Vanadium Alloys for Fusion Applications
Determining the Spatial Distribution of Primary Radiation Damage in Nanostructured Materials
Development and Characterisation of Fe-Al-X-based BCC Ferritic Superalloys for Nuclear and High-Temperature Environments
Direct Observation of Extreme Mechanical Energy Transfer and Healing of Damage from Repeat Shock-loading in Stabilized Nanocrystalline Cu-Ta Alloys
Direct Visualization and Quantification of Fusion Tungsten Nanofuzz Oxidation by In-situ Environmental TEM
Dominant High-temperature Mechanism for Grain Size Stability in Nanocrystalline Alloys
Effect of Hydrogen Charging on the Deformation Behavior in Nanostructured Iron
Effect of Neutron Irradiation on Microstructure and Mechanical Properties of Nanocrystalline Nickel
Effect of Neutron Irradiation on Parent and Friction Stir Processed Ni-based ODS MA754
Enhanced Strength and Thermal Stability in Oxide Dispersion Strengthened Nanostructured Aluminum Alloys
Evolution of Thermally Stable CuTa Nanocrystalline Alloys
Extreme Strengthening of Ferrium(R) M54(R) Alloy via Hierarchical Microstructural Engineering
Grain Growth of Nanograined Fe Oxides under Thermal Annealing and Ion Irradiation Using In-situ TEM
Hetero-nanostructuring and Relaxation Behavior of an Al-Mg Nanostructured Alloy Examined by High-energy Synchrotron X-rays
High-temperature Oxidation Mechanism, Microstructure, and Mechanical Properties Evaluation of Iron-Chromium-Aluminum Alloys
High Temperature Deformation of Metal-oxide Interfaces Characterized by In Situ TEM
High Temperature Molten Lithium Corrosion of Nanostructured Steels
High Temperature Stabilization of Nanostructured Tungsten Alloys Through Synergistic Compositional Complexities
Hydrogen Embrittlement Mechanism of Nanostructured Steels
In-situ Transmission X-ray Microscopy Imaging of Hydrogen Charged Metals and Alloys
Irradiation-induced Athermal Crystallization in Nanostructured Amorphous Ceramics
Low Fluence Neutron Irradiation Responses of a Uranium-molybdenum Alloy
Mechanical Characterization of Thin Films via High-throughput Membrane Deflection Experiments
Micro-tensile Behavior of Niobium Single Crystals at Cryogenic Temperatures
Molecular Dynamics Simulations of the Interaction of Energetic Atomic Oxygen with Carbon Nanotube Based Composites
Multiscale Computation-Experiment Study of Advanced Materials with Characteristic Microstructure
Nano-structured Cr-superalloys in Advanced Concentrated Solar Plant Environments
Nanocrystalline Refractory Diborides Achieved through Alloying: Mechanical Properties and Thermal Stability
Nanostructured Materials Subjected to Ion Irradiation
Nanostructured Materials with Complex Microstructures and Chemical Compositions in Extreme Environments
Novel High Temperature Zirconium Alloys by Near-Alpha Titanium Analogy
Phase Decomposition in Severe Plastic Deformed Complex Concentrated Alloys
Radiation Effects in Borides: The Role of Interfaces and Layering
Radiation Effects on Diffusion and Defect Evolution at the Ni/Cr Interface Using 4D-STEM and STEM-EDS
Radiation Induced Segregation in Nanocrystalline Alloys: Perspectives from Modeling
Self-organization of Grain Boundary Precipitate Structures in Irradiated Alloys
Simplified Production of ODS-Ferritic Alloys for Long-life Reactor Fuel Assembly Ducts
Stability of VN, TaN, and TaC MX-type Precipitates in Neutron Irradiated Model Ferritic Alloys
Stability Screening for Amorphous and Nanostructured Ferritic Alloys
Steady-state Microstructures in Nanocrystalline Al-Sb Alloy under Irradiation
Studying Microstructural Evolution in a Friction Stir Processing Consolidated ODS-14YWT Powders
The Role of Local Chemical Ordering on Diffusion and Deformation Mechanisms in Multi-principal Element Alloys
The Role of Twin Boundaries and Pre-existing Dislocations on the Mechanical Behavior of Tungsten
Ultrafine-grained and Nanocrystalline Steels for Nuclear Applications
Understanding and Characterization of the Dynamic Deformation Behavior of Multiphase Cu-Fe Alloy Microstructures Using Molecular Dynamics and Virtual Diffraction
Understanding Functional Materials in Extremes Through Machine-guided Discovery
Wire-Arc Additive Manufacturing of Haynes 282 Superalloy with Designed Precipitation Strengthening for High Performance at Elevated Temperatures

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