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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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Riedlsperger, Florian
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Thermal cycling effects on the local microstructure and mechanical properties in wire-based directed energy deposition of nickel-based superalloycitations
- 2023Influence of process and heat input on the microstructure and mechanical properties in wire arc additive manufacturing of hot work tool steelscitations
- 2023Prediction of TTR Diagrams via Physically Based Creep Simulations of Martensitic 9-12% Cr-Steels
- 2023Materials Characterization / Microstructural insights into creep of Ni-based alloy 617 at 700 °C provided by electron microscopy and modellingcitations
- 2022Microstructurally Based Modeling of Creep Deformation and Damage in Martensitic Steelscitations
- 2022Tailoring the alloy composition for wire arc additive manufacturing utilizing metal-cored wires in the cold metal transfer processcitations
- 2021Thermodynamic modelling and microstructural study of Z-phase formation in a Ta-alloyed martensitic steel
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article
Tailoring the alloy composition for wire arc additive manufacturing utilizing metal-cored wires in the cold metal transfer process
Abstract
<p>In the present study, the application and tailoring of the alloy composition of chromium martensitic hot-work steels using metal cored wires (MCW) for wire arc additive manufacturing (WAAM) in a modified short-circuit metal transfer process is demonstrated. The nickel content was varied and the alloys were fabricated as tubular-cored wires with various powder fillings. By recording the material transfer at high speed during processing, evidence was gathered indicating the suitability of the fabricated cored wires for WAAM. Optimized process parameters were identified by taking a Design of Experiment (DoE) approach and additive manufacturing (AM) structures were fabricated from the chromium martensitic hot-work tool steel alloys. The microstructure and mechanical properties of the parts were subsequently characterized. The phase fraction of the polygonally shaped delta ferrite could be reduced and microstructural refinement could be achieved by adding nickel to the investigated hot-work tool steel. In addition to molybdenum-enriched precipitates that covered the grain boundaries, randomly scattered non-metallic inclusions and oxides were observed. Modifying the microstructure by adding nickel also affects the mechanical properties of the product: an increase in hardness, impact toughness and yield strength as the nickel content increased in the AM structures fabricated by WAAM was observed.</p>