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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Powder Materials for Energy Applications
Presentation Title Microstructural Evolution of a Nanostructured Ferritic Alloy Composite during In-situ Ion Irradiation
Author(s) Kathy Lu, Kaustubh Bawane, David Bai, Jing Hu, Meimei Li
On-Site Speaker (Planned) Kathy Lu
Abstract Scope Silicon carbide and carbon coated nanostructured ferritic alloy (SiC-C@NFA) composites are promising cladding materials for next-generation reactors. In this study, this material system was irradiated with Kr++ ions at 1 MeV energy up to 10 dpa at 300C and 450C. Microstructures and defect evolution were studied in-situ using the IVEM facility at Argonne National Laboratory. The effect of ion irradiation on various phases such as α-ferrite (NFA) matrix, (Fe,Cr)7C3, and (Ti,W)C precipitates were evaluated. The α-ferrite matrix showed a continuous increase in dislocation density along with spatial ordering (or loop string) of dislocations at >5 dpa irradiation. The size of the dislocation loops at 450C was higher than that at 300C. The nucleation and growth of new (Ti,W)C precipitate in α-ferrite grains increase with the ion dose at 450C. This study provides an in-depth understanding of the ion irradiation resistance of the SiC-C@NFA system.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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Advanced Skutterudite-based Thermoelectric Unicouples by Near Net Shape Powder-based Fabrication for Future Space Power Applications
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Cold Spray Deposition of 304L Stainless-steel Powder on Used Fuel Dry Cask Storage Systems to Control Potential Stress Corrosion Cracking
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Effect of Particle Spreading Dynamics on Powder Bed Quality
Fabrication of Complex Shape Components by Spark-plasma Sintering Utilizing 3D-printed Controllable Interface
Fabrication of Uniform-sized Hemispherical Mesopores on Gold-coated Silver Nanocubes for Enzyme Immobilization
Flash Sintering: From Fundamental Science to Energy-saving Materials Processing
Influence of Powder Microstructure on Cold Spray Deposited Cr Coatings for High Temperature Oxidation Resistance
Investigation of the Powder Processing of Near-final Shape AlNiCo Magnets for Eventual Use in Electric Drive Motors
Is Additive Manufacturing a Competition or Complimentary Technology to Current Processing of Metals?
Materials for Nuclear Applications Produced by Powder-based Techniques
Microstructural Evolution of a Nanostructured Ferritic Alloy Composite during In-situ Ion Irradiation
Microstructural Evolution of NFA and Cr3C2@SiC-NFA Composite during Ion Irradiation
Miscibility Gap Alloy Thermal Storage Materials
Next Stage Development of Iron-based GARS Alloy Powders for Cold Spray Deposition of ODS Structural Materials for Extreme Environments
Novel Additive Manufacturing Process Design for U3Si2 Fuel
Peltier Effect during Spark Plasma Sintering of Boron Carbide
Powder Metal Technology for High-performance Materials with Harmonic-structure
Processing and Characteristics of Nanostructured Ferritic Alloys for Nuclear Reactor Applications
Superelastic Zirconia Powder for Shockwave Dissipation in Energy Infrastructure
Synthesis, Sintering, and Electrochemical Properties of Lithium Conducting Garnets from Molten Salt Fluxes for All-Solid-State Lithium Batteries
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