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| Naji, M. |
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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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Mair, P.
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Topics
Publications (5/5 displayed)
- 2023Deformation and fatigue behaviour of additively manufactured Scalmalloy® with bimodal microstructurecitations
- 2022Dependence of mechanical properties and microstructure on solidification onset temperature for Al2024–CaB<sub>6</sub> alloys processed using laser powder bed fusioncitations
- 2022An improved process scan strategy to obtain high-performance fatigue properties for Scalmalloy®citations
- 2022Alloy design strategy for microstructural-tailored scandium-modified aluminium alloys for additive manufacturingcitations
- 2021Microstructure and mechanical properties of a TiB<sub>2</sub>-modified Al–Cu alloy processed by laser powder-bed fusioncitations
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article
An improved process scan strategy to obtain high-performance fatigue properties for Scalmalloy®
Abstract
The choice of appropriate processing parameters in laser powder bed fusion is firmly established in the state-of-the-art additive manufacturing community. However, optimisation of scanning strategy would result in improved material properties. Here, the optimal scanning strategy for fatigue-loaded high-performance aluminium alloys, such as Scalmalloy®, was investigated. This study demonstrates how to reduce uncontrolled interactions of the laser with the distinct weld plume, created by highly volatile alloying elements such as Mg. Tensile and fatigue testing were used to assess the structural integrity of specimens, in which different welding modes had been used. It is shown that a combination of: scan vector angle restriction; reduction of the scan vector length; and laser spot adjustments reduce the overall defect size and improves the build quality in Scalmalloy®. A bimodal microstructure with outstanding mechanical properties was observed: an ultimate tensile strength of 524 MPa was achieved with 17 % elongation at fracture. In order to evaluate the influence of the defect size, fatigue tests were performed at a stress ratio of . Under optimal processing conditions, fatigue strengths of up to at cycles were obtained, significantly outperforming both conventionally and additively produced aluminium alloys.