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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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Gutmann, Florian
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Acoustic Nondestructive Characterization of Metal Pantographs for Material and Defect Identificationcitations
- 2024Simulation-based approach to estimate influencing factors on acoustic resonance spectra of additively manufactured mechanical metamaterials
- 2023Miniaturization of non-assembly metallic pin-joints by LPBF-based additive manufacturing as perfect pivots for pantographic metamaterialscitations
- 2023Manufacturing size effect on the structural and mechanical properties of additively manufactured Ti-6Al-4V microbeamscitations
- 2022Design and Manufacturing of a Metal-Based Mechanical Metamaterial with Tunable Damping Propertiescitations
- 20222D numerical simulation of auxetic metamaterials based on force and deformation consistencycitations
- 2021Strain rate sensitivity of the additive manufacturing material Scalmalloy®citations
- 2021Strain Rate Sensitivity of the Additive Manufacturing Material Scalmalloy®citations
- 2021Strain rate sensitivity of the aluminium-magnesium-scandium alloy - Scalmalloy®
- 2021Strain rate sensitivity of the additive manufacturing material Scalmalloy [Registered Trade Mark]citations
- 2020Properties of a superelastic NiTi shape memory alloy using laser powder bed fusion and adaptive scanning strategiescitations
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article
Strain rate sensitivity of the aluminium-magnesium-scandium alloy - Scalmalloy®
Abstract
This work investigates the strain rate sensitivity of the aluminiummagnesium-scandium alloy Scalmalloy, which is used extensively for additive manufacturing of lightweight structures. This high strength aluminium alloy combines very good weldability, machinability and mechanical strength: it can be heat-treated to reach nominal ultimate tensile strengths in excess of 500 MPa. We report tensile tests at strain rates ranging from 10−3 /s to 103 /s at room temperature. It is well known that Al-Mg alloys exhibit a negative strain rate dependency in combination with serrated flow caused by the Portevin-Le Chatelier effect, which describes the interaction of Mg solutes with dislocation propagations. In contrast, in Al-Sc alloys, the flow stress increases with increasing strain rate and displays positive strain rate dependency. Additionally, the presence of Sc in the form of Al3-Sc provides a fine-grained microstructure which allows higher tensile and fatigue strength. This research shows how these combined effects interact in the case of Scalmalloy, which contains both Mg and Sc. Tests are performed at quasi-static, intermediate and high strain rates with a servohydraulic testing machine and a Split-Hopkinson tension bar. Local specimen strain was performed using 2D Digital Image Correlation.