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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hassanin, Hany
Canterbury Christ Church University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023Hot Air Contactless Single Point Incremental Formingcitations
- 2022Multipoint Forming Using Hole-Type Rubber Punchcitations
- 2021Laser powder bed fusion of Ti-6Al-2Sn-4Zr-6Mo alloy and properties prediction using deep learning approachescitations
- 2020Controlling the properties of additively manufactured cellular structures using machine learning approachescitations
- 20204D printing of origami structures for minimally invasive surgeries using functional scaffoldcitations
- 2018Additive Manufactured Sandwich Composite/ABS Parts for Unmanned Aerial Vehicle Applicationscitations
- 2018Surface finish improvement of additive manufactured metal partscitations
- 2018Microfabrication of Net Shape Zirconia/Alumina Nano-Composite Micro Partscitations
- 2018Tailoring selective laser melting process for titanium drug-delivering implants with releasing micro-channelscitations
- 2018Porosity control in 316L stainless steel using cold and hot isostatic pressingcitations
- 2017Net-Shape Manufacturing using Hybrid Selective Laser Melting/Hot Isostatic Pressingcitations
- 2017Evolution of grain boundary network topology in 316L austenitic stainless steel during powder hot isostatic pressingcitations
- 2017Development and Testing of an Additively Manufactured Monolithic Catalyst Bed for HTP Thruster Applicationscitations
- 2016Effect of casting practice on the reliability of Al cast alloyscitations
- 2016Adding functionality with additive manufacturing : fabrication of titanium-based antibiotic eluting implantscitations
- 2016Selective Laser Melting of TiNi Auxetic Structures
- 2016The development of TiNi-based negative Poisson's ratio structure using selective laser meltingcitations
- 2015Influence of processing conditions on strut structure and compressive properties of cellular lattice structures fabricated by selective laser meltingcitations
- 2015In-situ shelling via selective laser melting: modelling and microstructural characterisationcitations
Places of action
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article
Influence of processing conditions on strut structure and compressive properties of cellular lattice structures fabricated by selective laser melting
Abstract
AlSi10Mg cellular lattice structures have been fabricated by selective laser melting (SLM) using a range of laser scanning speeds and powers. The as-fabricated strut size, morphology and internal porosity were investigated using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray microtomography (micro-CT) and correlated to the compressive properties of the structure. Strut diameter was found to increase monotonically with laser power while the porosity was largest at intermediate powers. Laser scanning speed was found to thicken the struts only at slow rates while the porosity was largest at intermediate speeds. High speed imaging showed the melt pool to be larger at high laser powers. Further the melt pool shape was found to vary cyclically over time, steadily growing before becoming increasingly instable and irregularly shaped before abruptly falling in size due to splashing of molten materials and the process repeating. Upon compressive loading, lattice deformation was homogeneous prior to the peak stress before falling sharply due to the creation of a (one strut wide) shear band at around 45° to the compression axis. The specific yield strength expressed as the yield stress/(yield stress of the aluminium × relative density) is not independent of processing conditions, suggesting that further improvements in properties can be achieved by process optimisation. Lattice struts failed near nodes by a mixture of ductile and brittle fracture.