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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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Santa-Aho, Suvi Tuulikki
Tampere University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Magnetic domain wall dynamics studied by in-situ lorentz microscopy with aid of custom-made Hall-effect sensor holdercitations
- 2024Synergistic effects of heat treatments and severe shot peening on residual stresses and microstructure in 316L stainless steel produced by laser powder bed fusioncitations
- 2024Magnetic behavior of steel studied by in-situ Lorentz microscopy, magnetic force microscopy and micromagnetic simulations
- 2023Magnetic Domain Structure of Ferromagnetic Steels Studied by Lorentz Microscopy and Magnetic Force Microscopy
- 2023Multi-instrumental approach to domain walls and their movement in ferromagnetic steels – Origin of Barkhausen noise studied by microscopy techniquescitations
- 2022Novel utilization of microscopy and modelling to better understand Barkhausen noise signal
- 2022Comparative study of additively manufactured and reference 316 L stainless steel samples – Effect of severe shot peening on microstructure and residual stressescitations
- 2022Surface and subsurface modification of selective laser melting built 316L stainless steel by means of severe shot peening
- 2021Additive manufactured 316l stainless-steel samplescitations
- 2021Mimicking Barkhausen noise measurement by in-situ transmission electron microscopy - effect of microstructural steel features on Barkhausen noisecitations
- 2021Motion of Domain Walls in Ferromagnetic Steel Studied by TEM – Effect of Microstructural Features
- 2020Statistical evaluation of the Barkhausen Noise Testing (BNT) for ground samples
- 2020Cracking and Failure Characteristics of Flame Cut Thick Steel Platescitations
- 2019Role of Steel Plate Thickness on the Residual Stress Formation and Cracking Behavior During Flame Cuttingcitations
- 2019Case Depth Prediction of Nitrided Samples with Barkhausen Noise Measurementcitations
- 2018Surface layer characterization of shot peened gear specimenscitations
- 2018Effect of microstructural characteristics of thick steel plates on residual stress formation and cracking during flame cuttingcitations
- 2017Characterization of Flame Cut Heavy Steelcitations
- 2016Barkhausen noise response of three different welded duplex stainless steelscitations
- 2016The Characterization of Flame Cut Heavy Steel – The Residual Profiling of Heat Affected Surface Layercitations
- 2015Modelling of Material Properties Using Frequency Domain Information from Barkhausen Noise Signalcitations
- 2012Barkhausen Noise Method for Hardened Steel Surface Characterization - The Effect of Heat Treatments, Thermal Damages and Stresses
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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.