Reverse bending fatigue of 316L stainless steel components produced by laser powder bed fusion

Reverse bending fatigue of 316L stainless steel components produced by laser powder bed fusion

Stefano Guarino, Emanuele Mingione, Gennaro Salvatore Ponticelli, Simone Venettacci

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Abstract. The freedom to manufacture metal components with very complex geometries using additive manufacturing techniques, such as laser powder bed fusion (LPBF), has opened new possibilities to produce innovative solutions with a high technological impact. It is therefore pivotal to have a detailed knowledge of the performance characteristics, both in the short and in the long term. Within this framework, this study firstly highlights the monotonic tensile properties of the LPBF samples by changing the laser scanning speed, the layer thickness, and the building orientation. Then, within the same process conditions, the fatigue life is investigated through reverse bending loading tests. The results verify an improved resistance, a reduced rigidity, and a strong anisotropy for the LPBF specimens if compared to the bulk material. The dependence on the orientation, together with the porosity of the LPBF samples, are the primarily responsible for the reduction of the fatigue limit.

Laser Powder Bed Fusion, 316L Stainless Steel, Fatigue Life

Published online 9/5/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Stefano Guarino, Emanuele Mingione, Gennaro Salvatore Ponticelli, Simone Venettacci, Reverse bending fatigue of 316L stainless steel components produced by laser powder bed fusion, Materials Research Proceedings, Vol. 35, pp 173-181, 2023


The article was published as article 21 of the book Italian Manufacturing Association Conference

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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