| People | Locations | Statistics |
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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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Schroepfer, Dirk
Royal BAM Group (United Kingdom)
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Processing of crack-free Nickel- and Cobalt-based wear protection coatings and defined surfaces by subsequent milling processescitations
- 2024Local mechanical properties of dissimilar metal TIG welded joints of CoCrFeMnNi high entropy alloy and AISI 304 austenitic steelcitations
- 2023Alloy modification for additive manufactured Ni alloy components, part I: effect on microstructure and hardness of Invar alloycitations
- 2023Influence of Milling Conditions on AlxCoCrFeNiMoy Multi-Principal-Element Alloyscitations
- 2023Influence of Milling Conditions on AlxCoCrFeNiMoy Multi-Principal-Element Alloyscitations
- 2023Microstructure and texture characterisation of friction stir welded CoCrNi and CoCrFeMnNi multi-principle element alloyscitations
- 2023Microstructure characterisation of multi-principal element alloys welds produced by electron beam weldingcitations
- 2022Investigations on influencing the microstructure of additively manufactured Co‑Cr alloys to improve subsequent machining conditionscitations
- 2022Nickel-Iron-Alloy Modification to Enhance Additively Welded Microstructure for Subsequent Millingcitations
- 2022Influence of machining on the surface integrity of high- and medium-entropy alloyscitations
- 2019In-situ Observation of Stress Evolution and Cracking during High Strength Steel Welding
- 2018Residual stress formation in component related stress relief cracking tests of a welded creep-resistant steelcitations
Places of action
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article
Processing of crack-free Nickel- and Cobalt-based wear protection coatings and defined surfaces by subsequent milling processes
Abstract
In the area of plant engineering, steel components are provided with a wear protection coating for efficient use to protect them against corrosive, tribological, thermal and mechanical stresses. The use of innovative ultrasound-assisted milling processes and plasma-welded nickel- and cobalt-based wear protection coatings are being investigated to determine how more favourable machinability can be achieved while retaining the same wear protection potential. The focus is on the NiCrSiFeB alloy, which is intended to replace CoCr alloys in the area of screw machines. The utilization of ultrasonic-assisted milling for the machining of coating materials is a novel approach. The modification of hard facing layers in terms of microstructure and precipitation morphology as well as suitability for machining is investigated and compared with the CoCr alloy. The alloy modifications are generated by a PTA process by systematically adjusting the preheating and interpass temperatures, a crack-free wear-resistant layer can be generated, which is subsequently machined by a milling process. In addition to the crack-free properties, the microstructure, the bonding as well as the mixing between the NiCrSiFeB alloy and a 1.8550 as well as between the CoCr alloy and a 1.4828 are analysed and compared in the joining areas. In addition, heating and cooling rates are determined and a chemical analysis of the weld metals is performed. Furthermore, it was found that the build-up layers of NiCrSiFeB alloy are more difficult to machine using the milling process than the CoCr alloy, as higher milling forces are required.