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Afkhami, S., Javaheri, V., Lipiäinen, K., Amraei, M., Dabiri, E., & Björk, T. (2022). Fatigue performance of stainless tool steel CX processed by laser powder bed fusion. Materials Science and Engineering: A, 841, 143031. https://doi.org/10.1016/j.msea.2022.143031

Fatigue performance of stainless tool steel CX processed by laser powder bed fusion

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Author: Afkhami, Shahriar1; Javaheri, Vahid2; Lipiäinen, Kalle1;
Organizations: 1Laboratory of Steel Structures, LUT University, Lappeenranta, 53850, Finland
2Materials and Mechanical Engineering, University of Oulu, 90014, Finland
3Laboratory of Laser Materials Processing and Additive Manufacturing, LUT University, Lappeenranta, 53850, Finland
4Department of Mechanical and Materials Engineering, University of Turku, Turku, 20520, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 5.2 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2022100461126
Language: English
Published: Elsevier, 2022
Publish Date: 2022-10-04
Description:

Abstract

This study investigates the fatigue performance of additively manufactured steel CX under uniaxial high cycle loading. The results show that surface quality was the most influential parameter that changed the fatigue behavior of the material, compared to combinations of building orientation and heat treatment as other fabrication parameters. Consequently, improving the surface quality from Ra = 3 μm–1 μm increased the fatigue limit from 170 MPa to 250 MPa. However, heat treatment did not significantly influence the fatigue performance of the material, although it increased the hardness of the material from 320 HV to 460 HV.

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Series: Materials science & engineering. A, Structural materials: properties, microstructure and processing
ISSN: 0921-5093
ISSN-E: 1873-4936
ISSN-L: 0921-5093
Volume: 841
Article number: 143031
DOI: 10.1016/j.msea.2022.143031
OADOI: https://oadoi.org/10.1016/j.msea.2022.143031
Type of Publication: A1 Journal article – refereed
Field of Science: 214 Mechanical engineering
216 Materials engineering
Subjects:
Additive manufacturing
CX
Fatigue
Fractography
Laser powder bed fusion
Article
Funding: This study was conducted at LUT University as a part of the project “Verkostoitumisella voimaa 3D-tulostukseen (VERKOTA, project code: A76589)” funded by the European Regional Development Fund (ERDF).
Copyright information: © 2022 The Authors. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
  https://creativecommons.org/licenses/by/4.0/