A5027388655- Fusion materials and technologies
- Nuclear Materials and Properties
- Welding Techniques and Residual Stresses
- Microstructure and mechanical properties
- Nuclear reactor physics and engineering
- High Temperature Alloys and Creep
- Metal and Thin Film Mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Physics and Applications
- Advanced Materials Characterization Techniques
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- Metallurgical Processes and Thermodynamics
- High-Temperature Coating Behaviors
- Metal Forming Simulation Techniques
- Laser-Plasma Interactions and Diagnostics
- Magnetic confinement fusion research
- Astro and Planetary Science
- Optical measurement and interference techniques
- Electromagnetic Effects on Materials
- High Entropy Alloys Studies
- Sports Performance and Training
- Powder Metallurgy Techniques and Materials
Culham Science Centre
2015-2024
Culham Centre for Fusion Energy
2015-2024
United Kingdom Atomic Energy Authority
2016-2024
University of Oxford
2013-2020
Ricardo AEA (United Kingdom)
2018
The EUROfusion materials research program for DEMO in-vessel components aligns with the European Fusion Roadmap and comprises characterization qualification of baseline EUROFER97, CuCrZr tungsten, advanced structural high heat flux developed risk mitigation, as well optical dielectric functional materials. In support future engineering design activities, focus is primarily to assemble qualified data supply process generate material property handbooks, assessment reports, criteria limits...
Ferritic steels strengthened with Ti–Y–O nanoclusters are leading candidates for fission and fusion reactor components. A Fe–14Cr–0.4Ti + 0.25Y2O3 (14YT) alloy was fabricated by mechanical alloying subsequently consolidated spark plasma sintering (SPS). The densification of the 14YT alloys significantly improved an increase in temperature. Scanning electron microscopy backscatter diffraction revealed that SPS-sintered at 1150 °C under 50 MPa 5 min had a high density (99.6%), random grain...
This review considers current Zr alloys and opportunities for advanced zirconium to meet the demands of a structural material in fusion reactors. based materials breeder blanket offer potential increase tritium breeding ratio above that Fe, Si V materials. Current commercial might be considered as water-cooled designs, due similar operating temperature fission power plants. For blankets designed operate at higher temperatures, will not high strength thermal creep requirements. Hence, with an...
The plasma-facing components of future fusion reactors, where the Eurofer97 is primary structural material, will be assembled by laser-welding techniques. heterogeneous residual stress induced welding can interact with microstructure, resulting in a degradation mechanical properties and reduction joint lifetime. Here, Xe+ plasma focused ion beam digital image correlation (PFIB-DIC) nanoindentation used to reveal mechanistic connection between stress, microhardness. This study first use...
The augmentation of mechanical properties reduced activation ferritic martensitic steels through the introduction creep resistant nano-oxide particles produces a class oxide dispersion strengthened steels, which have attracted significant interest as candidates for first wall supporting structural materials in future nuclear fusion reactors. In present work, effect temperature on elastic and micro-mechanics 0.3 wt% Y2O3 steel EUROFER97 is investigated using synchrotron high energy X-ray...
Abstract Two high-purity tungsten powders, produced via different manufacturing techniques, were characterized to determine size distribution, morphology, thermal properties, and flow characteristics and, thus, the likely suitability for Laser Powder Bed Fusion (LPBF) production. Specimens from duplicate builds with two powders density, defect mechanisms, penetration into substrate plate compare apparent power densities. The first powder was a chemically reduced irregular morphology second,...
The development of new, high performance reduced activation materials is increasingly recognised as one the key enabling technologies required for advancement civil fusion power. Reduced steels are considered leading reactor blanket structural materials. manufacturing and database current have reached a state maturity where basic design implementation can be addressed. However, there remain concerns with these due to an incomplete irradiation because their limited operational temperature...
Determining tensile properties from small punch test is being pursued actively in the nuclear industry due to limited volume of material such tests use compared with standard which can be critical when considering active or development samples. One crucial challenges harnessing full potential this technique formulating methodologies correlate specimen's deflection equivalent uniaxial properties. Existing approaches for correlation rely on obtained a single point specimen, used empirical...
The effects of vacuum induction melting (VIM) (<1 Pa–100 Pa) on gas content, oxide inclusions and mechanical properties Ni-based superalloy K4648 has been investigated by electron beam (EB) button experiment under high (10-3 resolution synchrotron X-ray powder diffraction (SXPD). results indicated that VIM remelting drop obvious effect the existing form trace oxygen. total amount oxygen did not increase significantly but a dramatic in 1–2 orders magnitude was found. are mainly oxides...
Abstract The high source stability and brightness of field emission gun equipped scanning electron microscopes (SEM) makes them ideal for high‐resolution digital image correlation (HRDIC). However, their initial capital cost can be prohibitive research organisations groups. Conventional thermionic SEMs using either a tungsten hairpin or LaB 6 filament are far more widespread due to lower cost. Whilst it is understood that overall performance ultimate resolution than SEMs, we propose there no...
Abstract Scanning electron microscopy‐based high‐resolution digital image correlation (HRDIC) is now an established technique, providing full‐field strain and displacement measurement at the microscale. Techniques for generating speckle patterns sub‐micron mapping can often be either substrate dependent or rely on applying aggressive conditions which may alter microstructure of interest damage in highly sensitive materials. We detail a modification methodology successfully applied literature...
This work addresses an overview of the recent progress, associated risks and development plans structural materials for in-vessel components (IVCs) in DEMO plants. Reduced Activation Ferritic Martensitic Steels form primary most DEMOs IVCs will be focus paper. An EU- J-DEMO programs RAFM steels developments is presented. We highlight present status their use plants, with a on materials’ operational, project-oriented, requirements. The property handbooks from high-quality data illustrated. A...
The Combined Heating and Magnetic Research Apparatus (CHIMERA) fusion technology test facility is under construction. will be uniquely capable of semi-integral testing materials component modules up to the size ITER blanket module box, combined conditions in-vacuum high heat flux, static pulsed magnetic fields, high-temperature/high-pressure water cooling. This paper reports high-level capabilities CHIMERA baselined design planned program describes proposed strategy for use simulations...
The development of a specific materials database and handbook, for engineering design in-vessel components EU-DEMO, is an essential requirement assessing the structural integrity by design. For baseline materials, including EURFOER97, CuCrZr, Tungsten as well dielectric optical this has been ongoing several years within Engineering Data Design Integration sub-project EUROfusion Materials Work Package. Currently insufficient to ensure reliable safety or hazard analysis mostly does not yet...
Two oxide dispersion strengthened alloys: 14Cr-0.25Y2O3-0.22Hf (wt.%) and Fe-14Cr-0.25Y2O3-0.4Ti were fabricated by mechanical alloying subsequently consolidated spark plasma sintering (SPS). Electron backscatter diffraction showed grain sizes in the range 0.5–15 μm both alloys. Transmission electron microscopy scanning transmission a homogeneous distribution of nano-oxides precipitated during SPS. Using high resolution microscopy, energy dispersive X-ray spectroscopy atom probe tomography,...