A5015040518- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Shape Memory Alloy Transformations
- Welding Techniques and Residual Stresses
- Additive Manufacturing and 3D Printing Technologies
- Intermetallics and Advanced Alloy Properties
- Metal and Thin Film Mechanics
- Titanium Alloys Microstructure and Properties
Dublin City University
2023-2024
I-Form Advanced Manufacturing Research Centre
2024
Is additive manufacturing (AM) a sustainable process? Can the process be optimised to produce AM parts and production techniques? Additive offers of made different types materials in addition complex geometry that is difficult or impossible by using traditional subtractive methods. This study focused on optimisation laser powder bed fusion (L-PBF), one most common technologies used 3D printing. research was carried out modulating build layer thickness deposited metal input volumetric energy...
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...
Nitinol (NiTi) has gained popularity across various industries due to its shape memory and superelastic properties. Recently, additive manufacturing (AM) been increasingly utilized produce NiTi components. This study focuses on single‐track nitinol samples fabricated via powder bed fusion using laser beam (PBF‐LB). Investigating the effects of power scanning speed melt pool dimensions reveals that width increases linearly with decreases logarithmically speed. However, depth exhibits outliers...
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 various elemental blends were compared with those pre-alloyed nitinol powder. solidification tracks generated using selected powders characterised...