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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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Järvenpää, Antti
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Synergistic effects of heat treatments and severe shot peening on residual stresses and microstructure in 316L stainless steel produced by laser powder bed fusioncitations
- 2024Comparative fatigue performance of as-built vs etched Ti64 in TPMS-gyroid and stochastic structures fabricated via PBF-LB for biomedical applicationscitations
- 2023Microstructure and Fatigue Life of Surface Modified PBF-LB Manufactured Maraging Steel
- 2023Effect of Severe Shot Peening on Mechanical Properties and Fatigue Resistance of Wire Arc Additive Manufactured AISI 316Lcitations
- 2023The Effect of Laser Heat Treatment and Severe Shot Peening on Laser Powder Bed Fusion Manufactured AISI 316L Stainless Steel
- 2023Effect of High-Temperature Tempering on Microstructure and Mechanical Strength of Laser-Welded Joints between Medium-Mn Stainless Steel and High-Strength Carbon Steel
- 2023Fatigue Life and Impact Toughness of PBF-LB Manufactured Ti6Al4V and the Effect of Heat Treatment
- 2023Surface Roughness Improvement of PBF-LB Manufactured 316L with Dry Electropolishingcitations
- 2023High Temperature Heat Treatment and Severe Shot Peening of PBF-LB Manufactured 316L Stainless Steelcitations
- 2023Enhancement and underlying fatigue mechanisms of laser powder bed fusion additive-manufactured 316L stainless steelcitations
- 2022Comparative study of additively manufactured and reference 316 L stainless steel samples – Effect of severe shot peening on microstructure and residual stressescitations
- 2022The effect of severe shot peening on fatigue life of laser powder bed fusion manufactured 316L stainless steelcitations
- 2022Surface and subsurface modification of selective laser melting built 316L stainless steel by means of severe shot peening
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document
Surface and subsurface modification of selective laser melting built 316L stainless steel by means of severe shot peening
Abstract
Metal additive manufacturing is a cutting-edge manufacturing technology which enables production of complex shaped geometries in layer-by-layer method. In addition to intricate shapes, it facilitates minimum material wastage, consolidated assemblies as well as topology optimization [1], [2]. However, the as-printed parts especially produced by laser powder bed fusion (LPBF) have poor surface finish when compared to the conventional manufacturing methods such as hot or cold rolling [3]. Therefore, in the present work the as-printed LBBF 316L stainless steel components were subjected to severe shot peening (SSP) in an attempt to improve the surface and subsurface properties.<br/>The as-printed LPBF 316L parts were shot peened with 2 and 42 number of passes. The effect of SSP on the surface roughness as well as grain refinement was studied with the help of scanning electron microscopy, optical profilometry and electron backscatter diffraction (EBSD). In addition to the microscopic investigations, the samples were analysed for residual stresses as well as microhardness in near surface areas. Subjecting the sample to SSP smoothened the surface by evening out un-melted powder particles (refer Fig.1). It resulted in significant improvement in the surface roughness value (Rz = 29 µm) when compared to the as printed condition (Rz = 71 µm). Furthermore, SSP resulted in grain refinement depth of ̴ 40 µm which was evident from the EBSD results. Moreover, beneficial large compressive residual stresses were also induced in near surface areas. The SSP caused work hardening and thereby significantly increased the hardness values in near surface areas. These advantageous improvements make SSP a reliable method for surface and subsurface modifications in LPBF built 316L stainless steel components.<br/><br/>References:<br/>[1] J. Gausemeier, N. Echterhoff, and M. Wall, “Thinking ahead the Future of Additive Manufacturing – Innovation Roadmapping of Required Advancements,” Univ. Paderborn Direct Manufacuring Res. Cent., p. 110, 2013, [Online]. Available: http://www.hni.uni-paderborn.de/en/pe.<br/>[2] M. Attaran, “The rise of 3-D printing: The advantages of additive manufacturing over traditional manufacturing,” Bus. Horiz., vol. 60, no. 5, pp. 677–688, 2017, doi: 10.1016/j.bushor.2017.05.011.<br/>[3] S. Santa-Aho et al., “Additive manufactured 316l stainless-steel samples: Microstructure, residual stress and corrosion characteristics after post-processing,” Metals (Basel)., vol. 11, no. 2, pp. 1–16, 2021, doi: 10.3390/met11020182.