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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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Shen, Junjun
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Microstructure refinement by a novel friction-based processing on Mg-Zn-Ca alloy
- 2024Fatigue crack initiation and propagation in plain and notched PBF-LB/M, WAAM, and wrought 316L stainless steel specimenscitations
- 2023Process characteristics of constrained friction processing of AM50 magnesium alloy
- 2023Microstructural development of as-cast AM50 during Constrained Friction Processing: grain refinement and influence of process parameterscitations
- 2023Strengthening mechanisms and strain hardening behavior of 316L stainless steel manufactured by laser-based powder bed fusioncitations
- 2022Tool wear mechanisms and effects on refill friction stir spot welding of AA2198-T8 sheetscitations
- 2022Comparing the fatigue performance of Ti-4Al-0.005B titanium alloy T-joints, welded via different friction stir welding sequencescitations
- 2021Improved mechanical properties of cast Mg alloy welds via texture weakening by differential rotation refill friction stir spot weldingcitations
- 2021Improved mechanical properties of cast Mg alloy welds via texture weakening by differential rotation refill friction stir spot welding
- 2021Revealing joining mechanism in refill friction stir spot welding of AZ31 magnesium alloy to galvanized DP600 steelcitations
- 2021Revealing joining mechanism in refill friction stir spot welding of AZ31 magnesium alloy to galvanized DP600 steel
- 2019Fundamental study on additive manufacturing of aluminum alloys by friction surfacing layer depositioncitations
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document
Fatigue crack initiation and propagation in plain and notched PBF-LB/M, WAAM, and wrought 316L stainless steel specimens
Abstract
Additively manufactured (AM) components—either made by laser-powder bed fusion or wire and arc additive manufacturing—typically contain process-related defects on and near surfaces that can be removed by machining. Various studies have shown that post-treatment, such as machining significantly improves the fatigue strength of AM parts. To this day, however, hardly any studies have investigated the fatigue strength of post-treated additively manufactured components with notches. In this study, fatigue tests were performed on plain and notched specimens to determine and compare the crack initiation and crack propagation behavior due to different manufacturing-related effects. Tests were performed on specimens produced by the two aforementioned AM processes and compared to specimens taken from wrought sheets. The fatigue strength of AM materials is influenced by microstructure, defects, residual stress, and notches. PBF-LB/M specimens exhibit the highest fatigue strength in plain, notch-free conditions, attributed to differences in microstructure and static strength affecting fatigue crack initiation. Notched specimens show larger differences among materials, with PBF-LB/M having shorter fatigue crack propagation life related to line-type defect clusters, while the plain PBF-LB/M specimens are less affected as their fatigue strength is primarily determined by fatigue crack initiation.