University of Oulu

Rautio, T., Mustakangas, A., Kumpula, J., & Järvenpää, A. (2022). Scanning strategy effect on the edge porosity and fatigue life of 316L PBF-LB parts. Procedia CIRP, 111, 130–133.

Scanning strategy effect on the edge porosity and fatigue life of 316L PBF-LB parts

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Author: Rautio, Timo1; Mustakangas, Aappo1; Kumpula, Jani1;
Organizations: 1Kerttu Saalasti Institute, University of Oulu, Pajatie 5, 85500 Nivala, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Elsevier, 2022
Publish Date: 2022-11-25


In addition to the surface quality and appearance, the near surface scanning strategy has an influence on the porosity beneath the surface of LBPF manufactured 316L parts. Furthermore, this porosity will influence the fatigue life of the part which will be pronounced on a flexural bending type of fatigue. In this work, the effect of scanning strategy to the edge porosity was analyzed by optical microscopy and the effect on the fatigue life was measured with flexural bending tests. The results showed that the edge porosity had a clear impact on the fatigue life and the fatigue limit was improved by 30 % to 250 MPa by a simple parameter change.

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Series: Procedia CIRP
ISSN: 2212-8271
ISSN-E: 2212-8271
ISSN-L: 2212-8271
Volume: 111
Pages: 130 - 133
DOI: 10.1016/j.procir.2022.08.106
Type of Publication: A4 Article in conference proceedings
Field of Science: 216 Materials engineering
Funding: 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.
Copyright information: © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (