T. Rautio, M. Jaskari, M. Hietala and A. Järvenpää, "Comparison of Polishing Methods: The Effect on The Surface Roughness and Fatigue Performance of PBF-LB manufactured 316L Stainless Steel," 2022 7th National Scientific Conference on Applying New Technology in Green Buildings (ATiGB), Da Nang, Vietnam, 2022, pp. 51-55, doi: 10.1109/ATiGB56486.2022.9984097
Comparison of polishing methods : the effect on the surface roughness and fatigue performance of PBF-LB manufactured 316L stainless steel
|Author:||Rautio, Timo1; Jaskari, Matias1; Hietala, Mikko1;|
1Future Manufacturing Technologies, University of Oulu, Nivala, Finland
|Online Access:||PDF Full Text (PDF, 0.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023041436677
|Publish Date:|| 2023-04-14
Stainless steel 316L is currently one of the most prominent materials on the AM industry including the laser powder bed fusion (PBF-LB) manufacturing. The surface roughness of the PBF-LB manufactured material is typically over 10 μm in terms of Ra and this can have a detrimental role in the fatigue resistance of the parts. However, several techniques and machines are now available to reduce the surface roughness, but no comprehensive data is available on the limits or the effectiveness of those. In this paper, the performance of four commonly available techniques is analyzed utilizing equal PBF-LB manufactured 316L samples. The results show the effect on the surface roughness and also the surface profiles and topographies are analyzed. Up to 80% reduction in the surface roughness R a could be reached. Moreover, the effect of each polishing method on the fatigue performance in bending fatigue testing was analyzed. The results showed that the fatigue limit of the 316L can be tripled even when mirror finish is not reached.
|Pages:||51 - 55|
2022 7th National Scientific Conference on Applying New Technology in Green Buildings (ATiGB)
National Scientific Conference on Applying New Technology in Green Buildings
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
216 Materials engineering
The authors would like to acknowledge the financial support received from the Council of Oulu Region and the European Union (European Regional Development Fund) for the M3D project.
© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.