Abstract
The design flexibility offered by the newest additive manufacturing technologies is attracting the attention of the automotive industry for the realization of safety-relevant components. However, the realization of complex geometries is characterized by the use of support structures which sustain surfaces with downskin angles lower than 45°. The subsequent removal of these punctual joints leaves the surface irregular and with a large amount of defects. In this work, the effect of surface imperfections on the cyclic stress–strain behavior of additively manufactured metals is evaluated. Small-scale specimens are manufactured by selective laser melting of AlSi10Mg powder. The specimens are manufactured using different build orientations, part of them are left as-built while the surface of other specimens has been polished. Incremental step tests are carried out in order to evaluate the cyclic stress–strain behavior of this material.
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Ackowledgements
The research and development project “VariKa” that forms the basis for this report is funded within the scope of the “PAiCE Digitale Technologien für die Wirtschaft” technology programme run by the Federal Ministry for Economic Affairs and Energy and is managed by the DLR project management agency “Gesellschaft, Innovation, Technologie-Informationstechnologien/Elektromobilität” at the German Aerospace Center in Cologne. The author is responsible for the content of this publication.
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© 2019 The Minerals, Metals & Materials Society
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Scurria, M., Möller, B., Wagener, R., Melz, T. (2019). Effect of the Surface Finish on the Cyclic Behavior of Additively Manufactured AlSi10Mg. In: TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05861-6_35
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DOI: https://doi.org/10.1007/978-3-030-05861-6_35
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