A5051583853- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Additive Manufacturing and 3D Printing Technologies
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Metallurgy and Material Forming
- Welding Techniques and Residual Stresses
- Aluminum Alloy Microstructure Properties
- Radiative Heat Transfer Studies
- Advanced Thermoelectric Materials and Devices
- Metallurgical Processes and Thermodynamics
- Chalcogenide Semiconductor Thin Films
- Metal Forming Simulation Techniques
- Microstructure and Mechanical Properties of Steels
- Laser Material Processing Techniques
- Refrigeration and Air Conditioning Technologies
- Thermal Radiation and Cooling Technologies
- Metal and Thin Film Mechanics
- Material Properties and Applications
- Intermetallics and Advanced Alloy Properties
- High Temperature Alloys and Creep
- Injection Molding Process and Properties
- Gas Dynamics and Kinetic Theory
- Nuclear Materials and Properties
- Fusion materials and technologies
Swansea University
2016-2025
Gower College Swansea
2019-2020
Bay Institute
2019
Singleton Hospital
2019
European Space Research and Technology Centre
2010-2013
European Space Agency
2012
University of Wales
1999-2006
Tokyo Institute of Technology
2006
Despite its excellent elemental properties, lightweight nature and good alloying potential, scandium has received relatively little attention in the manufacturing community. The abundance of Earth's crust is quite high. It more abundant than silver, cobalt, lead tin. But, because so well dispersed lithosphere, it notoriously difficult to extract commercial quantities – hence low market availability high cost. Scandium metallurgy still a largely unexplored field but progress being made. This...
Abstract Since the discovery of record figure merit (ZT) 2.6 ± 0.3 in tin selenide (SnSe), material has attracted much attention field thermoelectrics. This paper reports a novel pseudo‐3D printing technique to fabricate bulk SnSe thermoelectric elements, allowing for fabrication standard configuration generators. In contrast examples presented date, this is potentially very low‐cost and allows facile, scalable, rapid fabrication. Bulk elements are produced characterized over wide range...
This work compares the mechanical and corrosion properties of 316L steel manufactured by Laser Powder Bed Fusion (LPBF) post treated Hot Isostatic Pressing (HIP) to wrought 316L. HIP is often used default on LPBF components reduce porosity obtain best properties, however, if temperatures are too high, there a risk reducing strength resistance. The purpose this was investigate parameters understand trade-off in properties. By choosing various (700 °C, 1125 1200 °C), pressures (100 MPa, 137...
Powder recycling refers to the reuse of unused powder feedstock in laser bed fusion (PBF-LB/M) process. This approach is crucial for economic viability and sustainability PBF-LB/M, as accounts a large proportion total production cost. However, through recycling, physical chemical properties are liable change. variation can subsequently lead knock-on effects on mechanical fully built component. research has investigated changes that occur stainless steel 316L (SS316L) result recycling....
This work aims to evaluate the use of miniaturized tensile specimen (MTS) characterise mechanical properties alloys developed through rapid alloy prototyping (RAP), where high throughput tests are required on relatively small amounts material. Tensile were conducted at a variety strain rates and with increasingly smaller sizes, ranging from larger specimens conforming ASTM/ISO standards, down non-standard specimens. The gauge lengths ranged 50 80 mm for standard 5–10 To generalize MTS...
Residual stress is a major problem for most metal-based laser powder bed fusion (L-PBF) components. can be reduced by appropriate build planning and post-process heat treatments; however, it not always avoidable lead to failures due distortion cracking. Accurate measurement of residual levels difficult high equipment set-up costs long processing times. This paper introduces simple but novel method measuring stresses via three-pronged cantilever component, the three-prong (TPM). The allows...
Powder smoke phenomena – a cloud of metallic powder created by electrostatic repulsion is an inherent issue that has been observed in many high temperature alloys processed Electron Beam Bed Fusion (EPBF). To date the majority research addressing this focused on machine modification and process manipulation to prevent overcharging particles, but little investigated effects controlling characteristics. A recent body work from University Tohoku proposed ball milling as method for mechanically...
This work investigated the feasibility of using a miniaturised non-standard tensile specimen to predict post-necking behaviour materials manufactured via rapid alloy prototyping (RAP) approach. The experimental focused on determination Lankford coefficients (r-value) dual-phase 800 (DP800) steel and digital image correlation (DIC) for some cases, which were used help calibrate damage model parameters DP800 steel. three-dimensional numerical simulations influence size effect (aspect ratio,...
Tin selenide (SnSe) has attracted much attention in the field of thermoelectrics since discovery record figure merit (zT) 2.6 ± 0.3. While there have been many publications on p-type SnSe, to manufacture efficient SnSe thermoelectric generators, ann-type is also required. Publications n-type however, are limited. This paper reports a pseudo-3D-printing technique fabricate bulk elements, by utilizing Bi as dopant. Various doping levels investigated and characterized over wide range...
Abstract The geometrical view (configuration) factor plays a crucial role in radiative heat transfer simulations and several methods, such as integration, the Monte Carlo hemi‐cube method have been introduced to calculate factors recent years. In this paper combined with finite element (FE) technique is investigated. Results describing relationships between different discretization schemes, number of rays used for calculation, CPU time accuracy are presented. interesting case where reduced...