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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Kočí, Jan | Prague |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schimbäck, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Microstructure and Mechanical Properties of Ti-6Al-4V In Situ Alloyed with 3 wt% Cr by Laser Powder Bed Fusion
- 2024Advancements in metal additive manufacturingcitations
- 2022An improved process scan strategy to obtain high-performance fatigue properties for Scalmalloy®citations
- 2022Unique microstructure evolution of a novel Ti-modified Al-Cu alloy processed using laser powder bed fusioncitations
- 2022Alloy design strategy for microstructural-tailored scandium-modified aluminium alloys for additive manufacturingcitations
- 2021Laser powder bed fusion of an engineering intermetallic TiAl alloycitations
- 2019Metallography of Intermetallic Titanium Aluminides – the (Additive) Manufacturing Makes the Differencecitations
- 2019Examinations on Al-Mg-Sc-Alloys after Additive Manufacturingcitations
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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.