Reference : Strength Properties of 316L and 17-4 PH Stainless Steel Produced with Additive Manufa...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Physics and Materials Science
http://hdl.handle.net/10993/54163
Strength Properties of 316L and 17-4 PH Stainless Steel Produced with Additive Manufacturing
English
Kedziora, Slawomir mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)]
Decker, Thierry mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)]
Museyibov, Elvin mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)]
Morbach, Julian [> >]
Hohmann, Steven [> >]
Huwer, Adrian [> >]
Wahl, Michael [> >]
2022
Materials
15
18
6278
Yes
International
1996-1944
[en] additive manufacturing ; Charpy impact energy ; fatigue properties ; tensile strength ; BASF ; Ultrafuse ; Markforged
[en] The number of additive manufacturing methods and materials is growing rapidly, leaving gaps in the knowledge of specific material properties. A relatively recent addition is the metal-filled filament to be printed similarly to the fused filament fabrication (FFF) technology used for plastic materials, but with additional debinding and sintering steps. While tensile, bending, and shear properties of metals manufactured this way have been studied thoroughly, their fatigue properties remain unexplored. Thus, the paper aims to determine the tensile, fatigue, and impact strengths of Markforged 17-4 PH and BASF Ultrafuse 316L stainless steel to answer whether the metal FFF can be used for structural parts safely with the current state of technology. They are compared to two 316L variants manufactured via selective laser melting (SLM) and literature results. For extrusion-based additive manufacturing methods, a significant decrease in tensile and fatigue strength is observed compared to specimens manufactured via SLM. Defects created during the extrusion and by the pathing scheme, causing a rough surface and internal voids to act as local stress risers, handle the strength decrease. The findings cast doubt on whether the metal FFF technique can be safely used for structural components; therefore, further developments are needed to reduce internal material defects.
(Interreg V A Greater Region Program), German Ministry of Economic Affairs, Transport, Agriculture and Viniculture Rhineland-Palatinate.
http://hdl.handle.net/10993/54163
https://www.mdpi.com/1996-1944/15/18/6278

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