A5019760439- Advanced materials and composites
- High Entropy Alloys Studies
- Advanced Welding Techniques Analysis
- Additive Manufacturing Materials and Processes
- Aluminum Alloys Composites Properties
- Titanium Alloys Microstructure and Properties
- High-Temperature Coating Behaviors
- Erosion and Abrasive Machining
- Metal Forming Simulation Techniques
- Metal and Thin Film Mechanics
Dublin City University
2023-2025
I-Form Advanced Manufacturing Research Centre
2023-2024
Shiv Nadar University
2017-2019
Abstract The combination of high strength and good ductility are very desirable for advanced structural functional applications. However, measures to enhance typically lead reduction due their inverse correlation, nano-grained structures an instance. Bi-modal grain structure is promising in this regard, but its realization limited by multiple complex processing steps. Here, we demonstrate a facile single-step route the development bimodal austenitic stainless steel, SS316L. comprised fine...
In the realm of materials science and engineering, pursuit advanced with tailored properties has been a driving goal behind technological progress. Scientific interest in laser powder bed fusion (L-PBF) fabricated NiTi alloy recent times seen an upsurge activity. this study, we investigate impact varying volume energy density (VED) during L-PBF on microstructure corrosion behaviour alloys both scan (XY) built (XZ) planes. The microstructural evolution planes was characterized by electron...
Cavitation erosion remains the primary cause of material degradation in fluid machinery components operating at high speed. Micro-jets/shock waves caused by implosion bubbles on surface results significant loss and premature failure components. The presence corrosive medium further exuberates this effect, causing rapid degradation. Here, we demonstrate a novel pathway to control cavitation erosion-corrosion tailoring properties using submerged friction stir processing (FSP), severe plastic...
This study examined the effect of variations in laser power and scan speed for 52.39 at.%Ni-47.61 at.%Ti samples produced via powder bed fusion (L-PBF). The was varied between 150W 180 W, scanning speeds were 500 mm/s 1000 mm/s, other process parameters kept constant. resulting microstructures physical properties evaluated. In particular, phase type transformation characteristics, composition, Vickers microhardness, microstructural examined. It observed that variation mean microhardness...
Powder characteristics such as flow energy, bulk density, compressibility, morphology, particle size distribution (PSD) and laser energy absorbtivity have a significant impact on the Laser Bed Fusion (L-PBF) process. The of powder in-situ nickel-titanium alloy formation within L-PBF process is not well understood. In this work, nickel, titanium two elemental blends were compared with those pre-alloyed nitinol powder. solidification tracks generated using selected powders characterised for...
Abstract Most research to date in the field of L-PBF nitinol has been with near equiatomic nickel-titanium binary pre-alloyed powders. Significant understanding over last 10 years gained relation aspects such as microstructural evolution, control elemental composition, phase transformation behaviour, defects and mechanical properties. Challenges use powders include expense time constraints producing new blends. Elemental blending in-situ alloying nickel, titanium other constituents at point...