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Factors Influencing Mechanical Properties of Additive Manufactured Thin-Walled Parts
Örebro University, School of Science and Technology.ORCID iD: 0000-0002-8144-8821
Örebro University, School of Science and Technology.ORCID iD: 0000-0003-1408-2249
Uddeholms AB, Hagfors, Sweden.
2017 (English)Conference paper, Published paper (Refereed)
Abstract [en]

By using the Additive Manufacturing (AM) method it is possible to manufacture components with thin-walled sections and complex geometry. However, it is not clear when the surface becomes the strength limiting factor on thin-walled sections in the components or if the thickness of the components is reduced. Also, the microstructure of AM produced specimens may be heterogeneous and it is not clear how the build direction influence the strength of thin section components. In the present study, the influence of component thickness, surface roughness and build direction on the strength of AM produced components were investigated. Test specimens were manufactured using EOS M290 3D-printer and EN 1.2709 maraging steel powder. To investigate when the part thickness, surface and built orientation becomes the strength limiting factors tensile testing using thin samples built in both  horizontal and vertical build orientation with thicknesses ranging from 0.2 mm to 4 mm was performed. Results on strength limiting factors are discussed.

Place, publisher, year, edition, pages
2017.
Keywords [en]
additive manufacturing, material strength, thin-walled AM structures, steel
National Category
Mechanical Engineering Materials Engineering
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-61212OAI: oai:DiVA.org:oru-61212DiVA, id: diva2:1146416
Conference
Euro PM2017 Congress & Exhibition, Milan, Italy, October 1-5, 2017
Available from: 2017-10-02 Created: 2017-10-02 Last updated: 2017-10-03Bibliographically approved

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Karlsson, PatrikPejryd, Lars

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  • en-US
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  • nn-NO
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  • text
  • asciidoc
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