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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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Lehmhus, Dirk
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Automated Porosity Characterization for Aluminum Die Casting Materials Using X-ray Radiography, Synthetic X-ray Data Augmentation by Simulation, and Machine Learningcitations
- 2024Laser Powder Bed Fusion and Heat Treatment of the Martensitic Age‐Hardenable Steel (1.2709)citations
- 2024Effect of Heat Treatment on Electrical Insulation of Strain Sensors for Aluminum Cast Parts
- 2024Feasibility Study on the Generation of Nanoporous Metal Structures by Means of Selective Alloy Depletion in Halogen-Rich Atmospheres
- 2023Integrating Electronic Components, Sensors and Actuators in Cast Metal Components: An Overview of the State of the Art
- 2022High-Temperature Mechanical Properties of Stress-Relieved AlSi10Mg Produced via Laser Powder Bed Fusion Additive Manufacturingcitations
- 2021Syntactic Iron Foams' Properties Tailored by Means of Case Hardening via Carburizing or Carbonitridingcitations
- 2019New core technology for light metal castingcitations
- 2018Aluminum foams - processing, properties, and applicationscitations
- 2017High Strain Rate Tensile and Compressive Testing and Performance of Mesoporous Invar (FeNi36) Matrix Syntactic Foams Produced by Feedstock Extrusioncitations
- 2017Vibration-assisted sputter coating of cenospheres: A new approach for realizing Cu-based metal matrix syntactic foamscitations
- 2015Quasi-static and high strain rates compressive response of iron and Invar matrix syntactic foamscitations
- 2015Futuristic nanomaterials and composites: part II.
- 2015Futuristic nanomaterials and composites: part I.citations
- 2014Mechanical performance of structurally optimized AlSi7 aluminum foams - an experimental study ; Mechanisches Verhalten strukturell optimierter AlSi7-Schäume - eine experimentelle Untersuchungcitations
- 2013Quasi-static and dynamic mechanical performance of glass microsphere- and cenosphere-based 316L syntactic foams
- 2010Mechanical characterization of particulate aluminum foams-strain-rate, density and matrix alloy versus adhesive effectscitations
- 2009AlSi7 metallic foams- Aspects of material modelling for crash analysiscitations
- 2008Aluminum foam–polymer hybrid structures (APM aluminum foam) in compression testingcitations
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article
High-Temperature Mechanical Properties of Stress-Relieved AlSi10Mg Produced via Laser Powder Bed Fusion Additive Manufacturing
Abstract
The present study is dedicated to the evaluation of the mechanical properties of an additively manufactured (AM) aluminum alloy and their dependence on temperature and build orientation. Tensile test samples were produced from a standard AlSi10Mg alloy by means of the Laser Powder Bed Fusion (LPBF) or Laser Beam Melting (LBM) process at polar angles of 0°, 45° and 90°. Prior to testing, samples were stress-relieved on the build platform for 2 h at 350 °C. Tensile tests were performed at four temperature levels (room temperature (RT), 125, 250 and 450 °C). Results are compared to previously published data on AM materials with and without comparable heat treatment. To foster a deeper understanding of the obtained results, fracture surfaces were analyzed, and metallographic sections were prepared for microstructural evaluation and for additional hardness measurements. The study confirms the expected significant reduction of strength at elevated temperatures and specifically above 250 °C: Ultimate tensile strength (UTS) was found to be 280.2 MPa at RT, 162.8 MPa at 250 °C and 34.4 MPa at 450 °C for a polar angle of 0°. In parallel, elongation at failure increased from 6.4% via 15.6% to 26.5%. The influence of building orientation is clearly dominated by the temperature effect, with UTS values at RT for polar angles of 0° (vertical), 45° and 90° (horizontal) reaching 280.2, 272.0 and 265.9 MPa, respectively, which corresponds to a 5.1% deviation. The comparatively low room temperature strength of roughly 280 MPa is associated with stress relieving and agrees well with data from the literature. However, the complete breakdown of the cellular microstructure reported in other studies for treatments at similar or slightly lower temperatures is not fully confirmed by the metallographic investigations. The data provide a basis for the prediction of AM component response under the thermal and mechanical loads associated with high-pressure die casting (HPDC) and thus facilitate optimizing HPDC-based compound casting ...