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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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Valente, Emilie Hørdum
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2023Wire arc additive manufacturing of thin and thick walls made of duplex stainless steelcitations
- 2022Powder-based additive manufacturing of high-nitrogen stainless steels and austenitic nickel alloys
- 2022Powder-based additive manufacturing of high-nitrogen stainless steels and austenitic nickel alloys
- 2021In-situ interstitial alloying during laser powder bed fusion of AISI 316 for superior corrosion resistancecitations
- 2021In-situ interstitial alloying during laser powder bed fusion of AISI 316 for superior corrosion resistancecitations
- 2021Microstructure Optimization of AM metals through heat treatment and interstitial alloying
- 2021Targeted heat treatment of additively manufactured Ti-6Al-4V for controlled formation of Bi-lamellar microstructurescitations
- 2020Gaseous surface hardening of Ti-6Al-4V fabricated by selective laser meltingcitations
- 2019Effect of scanning strategy during selective laser melting on surface topography, porosity, and microstructure of additively manufactured Ti-6Al-4Vcitations
- 2019Effect of scanning strategy during selective laser melting on surface topography, porosity, and microstructure of additively manufactured Ti-6Al-4Vcitations
- 2019Influence of atmosphere on microstructure and nitrogen content in AISI 316L fabricated by laser‐based powder bed fusion
- 2019Influence of atmosphere on microstructure and nitrogen content in AISI 316L fabricated by laser‐based powder bed fusion
- 2019The Effect of Heat Treatment and Surface Hardening of 3D Printed Austenitic Stainless Steel AISI316l on Corrosion and Wear Properties
- 2019The Effect of Heat Treatment and Surface Hardening of 3D Printed Austenitic Stainless Steel AISI316l on Corrosion and Wear Properties
- 2019A method for identification and quantification of thermal lensing in powder bed fusion
- 2019Multi-material additive manufacturing of steels using laser powder bed fusion
- 2018High-temperature solution nitriding and low-temperature surface nitriding of 3D printed stainless steel
- 2018Modelling of the microstructural evolution of Ti6Al4V parts produced by selective laser melting during heat treatment
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article
Effect of scanning strategy during selective laser melting on surface topography, porosity, and microstructure of additively manufactured Ti-6Al-4V
Abstract
The effect of the scanning strategy during selective laser melting (SLM) of Ti-6Al-4V was investigated. An optimized cellular scan strategy (island scan modeled) was compared to a simple cellular scan strategy (island scan stripes) and a simple antiparallel line scanning strategy (line scan). Surface texture was investigated by optical three-dimensional (3D) surface measurements, which when combined with light optical microscopy (LOM), revealed deflections caused by the thermal stresses during the build process. Elevated edges caused by the edge-effect dominate the surface texture of all investigated specimens. The scanning strategy determines the surface texture, and the lowest surface roughness was obtained by the line scan strategy. Porosity was investigated with X-ray computed tomography-imaging. Mainly spherical porosity was observed for the line scan and island scan modeled specimens, while the island scan stripes strategy showed more lack-of-fusion defects and a higher total porosity amount. Microstructure was investigated with LOM and scanning electron microscopy (SEM). The microstructure in Ti-6Al-4V was largely martensitic α' and prior β grains. The morphology is different for the various scan strategies, and decomposition of α' into lamellar α/β was observed in the bottom part of the island scan specimen. Accordingly, the hardness decreased in the decomposed part of the specimen.