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Thickness dependency of mechanical properties for thin-walled titanium parts manufactured by Electron Beam Melting (EBM)(R)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. SP Tech Res Inst Sweden, Box 857, SE-50115 Boras, Sweden;Uppsala Univ, Dept Engn Sci, Div Appl Mat Sci, Angstrom Lab, Box 534, SE-75121 Uppsala, Sweden.
North Carolina State Univ, Ctr Addit Mfg & Logist, 400 Daniels Hall,111 Lampe Dr, Raleigh, NC 27695 USA.
North Carolina State Univ, Ctr Addit Mfg & Logist, 400 Daniels Hall,111 Lampe Dr, Raleigh, NC 27695 USA.
North Carolina State Univ, Ctr Addit Mfg & Logist, 400 Daniels Hall,111 Lampe Dr, Raleigh, NC 27695 USA.
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2016 (English)In: ADDITIVE MANUFACTURING, ISSN 2214-8604, Vol. 12, p. 45-50Article in journal (Refereed) Published
Abstract [en]

Metal powder bed additive manufacturing technologies, such as the Electron Beam Melting process, facilitate a high degree of geometric flexibility and have been demonstrated as useful production techniques for metallic parts. However, the EBM process is typically associated with lower resolutions and higher surface roughness compared to similar laser-based powder bed metal processes. In part, this difference is related to the larger powder size distribution and thicker layers normally used. As part of an effort to improve the resolution and surface roughness of EBM fabricated components, this study investigates the feasibility of fabricating components with a smaller powder size fraction and layer thickness (similar to laser based processes). The surface morphology, microstructure and tensile properties of the produced samples were evaluated. The findings indicate that microstructure is dependent on wall-thickness and that, for thin walled structures, tensile properties can become dominated by variations in surface roughness. (C) 2016 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2016. Vol. 12, p. 45-50
Keywords [en]
Additive manufacturing, Electron beam melting, Titanium, Mechanical properties
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:uu:diva-400363DOI: 10.1016/j.addma.2016.06.009ISI: 000435752000006OAI: oai:DiVA.org:uu-400363DiVA, id: diva2:1381349
Funder
Swedish Foundation for Strategic Research , V10.17Vinnova, 2012-03939Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2019-12-20Bibliographically approved

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Engqvist, Håkan

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