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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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Seidel, André
Fraunhofer Institute for Machine Tools and Forming Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2021Integral Approach for Hybrid Manufacturing of Large Structural Titanium Space Components
- 2020Comprehensive study on the formation of grain boundary serrations in additively manufactured Haynes 230 alloycitations
- 2020Hybrid manufacturing of titanium Ti-6Al-4V combining laser metal deposition and cryogenic millingcitations
- 2020Investigation on the formation of grain boundary serrations in additively manufactured superalloy Haynes 230citations
- 2020Novel approach for suppressing of hot cracking via magneto-fluid dynamic modification of the laser-induced marangoni convectioncitations
- 2019Microstructural, mechanical, and thermo-physical characterization of hypereutectic AlSi40 fabricated by selective laser meltingcitations
- 2019Surface modification of additively manufactured gamma titanium aluminide hardwarecitations
- 2019Wavelength dependent laser material processing of ceramic materialscitations
- 2019Advanced manufacturing approach via the combination of selective laser melting and laser metal depositioncitations
- 2019Material characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturingcitations
- 2019Phenomena in multi-material fabrication using laser metal depositioncitations
- 2018Evaluation of 3D-printed parts by means of high-performance computer tomographycitations
- 2018Hybrid additive manufacturing of gamma titanium aluminide space hardwarecitations
- 2018Additive manufacturing of powdery Ni-based superalloys Mar-M-247 and CM 247 LC in hybrid laser metal depositioncitations
- 2018Added value by hybrid additive manufacturing and advanced manufacturing approachescitations
- 2018Enhanced manufacturing possibilities using multi-materials in laser metal depositioncitations
- 2017Evaluation of 3D-printed parts by means of high-performance computer tomography
- 2017Process characteristics in high-precision laser metal deposition using wire and powdercitations
- 2017Added value by hybrid additive manufacturing and advanced manufacturing approaches
- 2017Enhanced manufacturing possibilities using multi-materials in laser metal deposition
- 2016Process characteristics in high-precision laser metal deposition using wire and powder
- 2016Laser-based manufacturing of components using materials with high cracking susceptibilitycitations
- 2015Laser-based manufacturing of components using materials with high cracking susceptibility
- 2015Additive manufacturing with high-performance materials and light-weight structures by laser metal deposition and laser infiltration
- 2009Materialverhalten von AR-Glas- und Carbonfilamentgarnen unter Dauerlast- sowie unter Hochtemperatureinwirkung
Places of action
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document
Material characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturing
Abstract
Recently, additive manufacturing (AM) by laser metal deposition (LMD) has become a key technology for fabricating highly complex parts without any support structures. Compared to the well-known powder bed fusion process, LMD enhances manufacturing possibilities to overcome AM-specific challenges such as process inherent porosity, minor build rates, and limited part size. Moreover, the advantages aforementioned combined with conventional machining enable novel manufacturing approaches in various fields of applications. Within this contribution, the additive manufacturing of filigree flexure pivots using 316L-Si by means of LMD with powder is presented. Frictionless flexure pivot bearings are used in space mechanisms that require high reliability, accuracy, and technical cleanliness. As a contribution to part qualification, the manufacturing process, powder material, and fabricated specimens were investigated in a comprehensive manner. Due to its major impact on the process, the chemical powder composition was characterized in detail by energy dispersive X-ray spectroscopy (EDX) and inductively coupled plasma optical emission spectrometry (ICP-OES). Moreover, a profound characterization of the powder morphology and flowability was carried out using scanning electron microscopy (SEM) and novel rheological investigation techniques. Furthermore, quantitative image analysis, mechanical testing, laser scanning microscopy, and 3D shape measurement of manufactured specimens were conducted. As a result, the gained knowledge was applied for the AM-specific redesign of the flexure pivot. Finally, a qualified flexure pivot has been manufactured in a hybrid manner to subsequently ensure its long-term durability in a lifetime test bench.