A5050471831- High-Temperature Coating Behaviors
- Welding Techniques and Residual Stresses
- Advanced Welding Techniques Analysis
- Metal and Thin Film Mechanics
- Advanced ceramic materials synthesis
- Nuclear Materials and Properties
- Additive Manufacturing Materials and Processes
- Aluminum Alloy Microstructure Properties
- High Entropy Alloys Studies
- Laser and Thermal Forming Techniques
- Aluminum Alloys Composites Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced materials and composites
- Magnesium Alloys: Properties and Applications
- Fusion materials and technologies
- Mechanical Failure Analysis and Simulation
- Concrete and Cement Materials Research
- Metallurgy and Material Forming
- Magnesium Oxide Properties and Applications
- Additive Manufacturing and 3D Printing Technologies
- Coal Combustion and Slurry Processing
- Microstructure and mechanical properties
- Innovations in Concrete and Construction Materials
- Injection Molding Process and Properties
- Advanced Sensor Technologies Research
University of Warwick
2022-2024
Coventry University
2020-2024
High-entropy materials (HEM), including alloys, ceramics, and composites, are a novel class of that have gained enormous attention over the past two decades. These multi-component with unique structures always exceptionally good mechanical properties phase stability at all temperatures. Of particular interest for high-temperature applications, e.g., in aerospace nuclear sectors, is new concept high-entropy coatings (HEC) on low-cost metallic substrates, which has just emerged during last few...
This study aims to investigate the impact of laser beam shaping on metal mixing and molten pool dynamics during welding Cu-to-steel for battery terminal-to-casing connections. Four shapes were tested LBW 300 μm Cu nickel-plated steel. Both experiments simulations used underlying physics. A CFD model was firstly calibrated against then deployed explore effect increasing ring-to-core diameter, as well a tandem spot configuration. The showed that is influenced by keyhole collapse events, but...
This study presents novel insights into thermal stress development and crack propagation mechanisms in single- multilayered suspension plasma-sprayed (SPS) coatings of gadolinium zirconate (GZ) yttria-stabilized zirconia (YSZ), thermally treated at 1150 °C. By combining image processing with finite element simulation, we pinpointed sites high-stress concentration the coatings, leading to specific cracking patterns. Our findings reveal a dynamic shift location from intercolumnar gaps pores...
The M4F project brings together the fusion and fission materials communities working on prediction of radiation damage production evolution their effects mechanical behaviour irradiated ferritic/martensitic (F/M) steels. It is a multidisciplinary in which several different experimental computational science tools are integrated to understand model complex phenomena associated with formation irradiation induced defects macroscopic target materials. In particular focuses two specific aspects:...
A new multi-layered thermal barrier coating system (TBCs) containing gadolinium zirconate (GZ, Gd2Zr2O7) and yttria-stabilized zirconia (YSZ) was developed using suspension plasma spray (SPS) to improve the overall cycling performance. This study focuses on cracking behavior of GZ/YSZ TBC after exposure find out key factors that limit its lifetime. Different behaviors were detected depending treatment condition (i.e., horizontal cracks within ceramic layer at thermally grown oxide (TGO)/YSZ...
AbstractThis paper proposes a numerical approach for predicting residual stresses induced during the additive manufacturing (AM) of polymer composites and their effect on deformation behavior composites. A finite element (FE) model was developed Abaqus/Standard 3D printing layered composite using three polymers: HDPE, PVC, ABS. The material properties pure polymers blends were measured through tensile testing injection-molded specimens. These then used as input data in FE regions interfaces....
Mg-3Al-1Zn-0.2Mn (wt.%, AZ31B) wires were successfully produced from commercial hot-rolled plates in one step using the CoreFlowTM process, a novel stationary shoulder friction stir extrusion manufacturing. CoreFlowed AZ31B exhibited fine grains with heterogeneous grain size distribution of 6.5 ± 4.2 μm along transverse direction (TD) compared as-received material. A weakened texture was also obtained AZ31B, basal poles aligned parallel to TD shift toward (ED) wire center edge. Periodic...
Remote laser welding (RLW) technology has become a prominent joining in automotive industries, offering high production throughput and cost-effectiveness. Recent advancements RLW processes such as beam oscillation have led to an increased number of input process parameters, enabling precise control over the heat weld metallic materials. A critical necessity is selection robust parameters that satisfy all quality indicators or key performance (KPIs). This research presents comprehensive...
The high-temperature oxidation behaviour and phase stability of equi-atomic high entropy AlCrCoFeNi alloy (HEA) were studied using in situ X-ray diffraction (HTXRD) combined with ThermoCalc thermodynamic calculation. HTXRD analyses reveal the formation B2, BCC, Sigma FCC, phases at different temperatures, significant transitions observed intermediate temperatures from 600 °C-100 °C. predicted diagram closely matched findings highlighting minor differences transformation temperature....
In the attempt to produce lighter battery packs at a lower cost, replacing common copper parts with aluminum components has been popular approach in recent years. With regard joining technologies, there is growing interest applying laser beam welding pack manufacturing due several advantages such as single-sided and noncontact access while maintaining narrow heat-affected zone. Motivated by need control reduce weld porosity AA1060 busbar ultimate goal enhance durability electrical...
This paper aims to improve the mechanical properties and fatigue life of AISI/SAE 4140 alloy steel connecting rods (CRs). Conventional CRs are typically manufactured through open die forging/hammering, blocking, hot forging processes. In present work, a modification process route has been proposed such that forging/hammering was completely replaced with multistep asymmetrical reducer rolling technique. Four passes were introduced achieve desired preform shape size. The effect each pass on...
In this research work, real-time three-point bending coupled with the scanning electron microscopy (SEM) technique were used to study crack formation and growth of air plasma spraying (APS) thermal barrier coatings (TBCs). The acquired micrographs then strain fields in vicinity cracking region using digital image correlation (DIC) analysis. Fractography analysis for fractured regions APS was also discussed. Based on observation, it found that roughness coatings’ free surface (e.g., valleys)...
This paper utilizes in situ X-ray diffraction (XRD) to investigate the high-temperature oxidation behaviour of CrMnFeCoNi high-entropy alloy (HEA). We found that (1) Mn is major oxide-forming element both vacuum and air environments, leading formation non-protective oxides deplete bulk Mn; (2) no like Cr2O3, Fe2O3, or Fe3O4 were observed during CrMnFeCoNi, which contradicts some previous studies on isothermal HEA. also analysed compared experimental results with thermodynamic calculations by...
This paper presents a series of Berkovich indentation results obtained on unirradiated and 7.2 MeV proton irradiated specimens Fe9Cr model alloy with an equiaxed ferritic microstructure. Using energy degrader wheel made 24 aluminum foils different thickness, flat damage profile about 50 μm resulted from the irradiation, allowing to perform indentations within volume material that is homogeneously irradiated. The size effect measured hardness was analyzed based disloction-slip distance theory...
Abstract In this study, the in-situ technique was used to observe crack formation and growth in multilayer suspension plasma spray (SPS) thermal barrier coatings (TBCs). Utilizing synchronized three-point bending (3PB) scanning electron microscopy (SEM), coupled with digital image correlation (DIC), we provide real-time insights into strain field dynamics around cracking zones. Bending-driven failure induced both single composite-layer SPS investigate behavior these columnar-structured TBCs....
AZ31B Mg alloy wires were successfully produced from commercial hot-rolled plates in one step using the CoreFlow™ process, a novel stationary shoulder friction stir extrusion manufacturing. CoreFlowed exhibited fine grains with heterogeneous grain size distribution of 6.5±4.2 μm along transverse direction (TD) compared as-received material. A weakened texture was also obtained AZ31B, basal poles aligned parallel to TD shift toward (ED) wire centre edge. Periodic needle-like regions...