A5086915357- Intermetallics and Advanced Alloy Properties
- Advanced materials and composites
- High Temperature Alloys and Creep
- Titanium Alloys Microstructure and Properties
- High Entropy Alloys Studies
- Nuclear Materials and Properties
- Microstructure and Mechanical Properties of Steels
- Metal Alloys Wear and Properties
- Electron and X-Ray Spectroscopy Techniques
- High-Temperature Coating Behaviors
- Advanced Materials Characterization Techniques
- Fusion materials and technologies
- Non-Destructive Testing Techniques
- Metal and Thin Film Mechanics
- Crystallization and Solubility Studies
- Hydrogen embrittlement and corrosion behaviors in metals
- X-ray Diffraction in Crystallography
- Metallurgy and Material Forming
- nanoparticles nucleation surface interactions
- Advanced ceramic materials synthesis
- Chemical and Physical Properties in Aqueous Solutions
- Nuclear reactor physics and engineering
- Corrosion Behavior and Inhibition
- Microstructure and mechanical properties
- Spectroscopy and Chemometric Analyses
University of Birmingham
2018-2024
Imperial College London
2016-2023
United Kingdom Atomic Energy Authority
2021-2023
Culham Science Centre
2021-2023
University of Cambridge
2016-2021
Culham Centre for Fusion Energy
2021
Rochester Institute of Technology
2017-2019
University of Oxford
2014
University of Bradford
1992-1994
University of Bristol
1984
Metastable β titanium alloys with both twinning (TWIP) and martensite transformation (TRIP) usually exhibit a low yield strength of between 200 500 MPa, but high strain hardening rate large uniform elongation. Alloys that on single system provide higher strength, lower rate. Here, for the first time, we report new alloy (Ti-7Mo-3Cr wt%) (695 MPa) work (∼1900 substantial 33.3% The deformation mechanisms were systematically investigated using EBSD TEM samples strained to 1.3%, 5% 16%. was...
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...
Refractory high-entropy alloys (RHEAs) with high melting points and low neutron absorption cross-section are sought for generation-IV fission fusion reactors. A throughput computational screening tool, Alloy Search Predict (ASAP), was used to identify promising RHEA candidates from over 1 million four-element equimolar combinations. The selected VNbCrMo further studied by CALPHAD predict phase formation, which compared an experimentally produced ingot aged at 1200 °C. found constitute a...
Chromium alloys are being considered for next-generation concentrated solar power applications operating > 800 °C. Cr offers advantages in melting point, cost, and oxidation resistance. However, improvements mechanical performance needed. Here, Cr-based body-centred-cubic (bcc) of the type Cr(Fe)-NiAl investigated, leading to 'bcc-superalloys' comprising a bcc-Cr(Fe) matrix (β) strengthened by ordered-bcc NiAl intermetallic precipitates (β'), with iron additions tailor precipitate volume...
The performance of advanced materials for extreme environments is underpinned by their microstructure, such as the size and distribution nano- to micro-sized reinforcing phase(s). Chromium-based superalloys are a recently proposed alternative conventional face-centred-cubic high-temperature applications, e.g., Concentrated Solar Power. Their development requires determination precipitate volume fraction using Electron Microscopy (EM), these properties crucial thermal stability mechanical...
A new candidate fusion engineering material, WC-FeCr, has been irradiated with He ions at 25 and 500 °C. Ions were injected 6 keV to a dose of ~15 dpa 50 at. % He, simulating direct helium injection from the plasma. The microstructural evolution was continuously characterised in situ using transmission electron microscopy. In FeCr phase, coarse array 3–6 nm bubbles formed. WC, less prominent smaller (~2 nm). Spherical-cap formed hetero-phase interfaces tertiary precipitates, indicating that...
To increase the strength of titanium alloys beyond that achievable with α-β microstructures, alternative reinforcing methods are necessary. Here, field-assisted sintering technology (FAST) has been used to produce a novel Ti-5Al-5Mo-5V-3Cr (Ti-5553) metal-matrix-composite (MMC) reinforced 0-25 wt.% ∼2 GPa yield TiFeMo alloy strengthened by ordered body-centred cubic intermetallic and ω phases. The interdiffusion region between Ti-5553 particles was studied modelling, electron microscopy,...
Incorporating reactive elements (RE) into turbine coatings is a well-established surface treatment. However, suboptimal RE concentrations can lead to compromised strength, heightened brittleness, and reduced adhesion. In contrast, oxides offer advantages of avoiding these detrimental effects, counteracting corrosion phenomena induced by V2O5 compounds enhancing oxidation resistance. A notable challenge lies in optimizing oxide particle incorporation understanding the influence particles...
The kinetics of primary alpha-Ti colony/Widmanstatten plate growth from the beta are examined, comparing model to experiment. velocity depends sensitively both on diffusivity D(T) rate-limiting species and supersaturation around growing plate. These result in a maxima 40 K below transus, once sufficient is available drive growth. In Ti-6246, was found be 0.32 um min-1 at 850 oC, which good agreement with prediction 0.36 . solute field plates, thickness, quite variable, due intergrowth plates...
Abstract Recent design and development of precipitate reinforced refractory metal alloys demonstrate the possibility A2 + B2 bcc superalloys as a new class high temperature materials. Existing β-Ti do not typically employ reinforcement with intermetallics, in other alloys; to this effect sufficient additions Fe, low cost stabiliser, can promote formation an ordered-bcc intermetallic phase, β′-TiFe (B2), offering scope develop β β′ dual-phase field. However, key uncertainties exist base Ti-Fe...