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Advanced manufacturing approach via the combination of selective laser melting and laser metal deposition
Fraunhofer Institute for Material and Beam Technology, Dresden, Germany.Department of Materials Technology, Technische Universität Dresden, Dresden, Germany.
Fraunhofer Institute for Material and Beam Technology, Dresden, Germany.
ESA/ESTEC, European Space Research and Technology Centre, Noordwijk, The Netherlands.
Fraunhofer Institute for Material and Beam Technology, Dresden, Germany.
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2019 (English)In: Journal of laser applications, ISSN 1042-346X, E-ISSN 1938-1387, Vol. 31, no 2, article id 022317Article in journal (Refereed) Published
Abstract [en]

Additive manufacturing processes are frequently discussed in a competitive manner instead of being considered synergetically. This is particularly unfavorable since advanced machining processes in combination with additive manufacturing can be brought to the point that the results could not be achieved with the individual constituent processes in isolation [K. Gupta, R. F. Laubscher, and N. K. Jain, Hybrid Machining Processes—Perspectives on Machining and Finishing (Springer, New York, 2016), p. 68]. On that basis, boundary conditions from selective laser melting (SLM) and laser metal deposition (LMD) are considered in mutual contemplation [A. Seidel et al., in Proceedings of 36th International Congress on Applications of Laser & Electro-Optics, Atlanta, GA, 22–26 October 2017(Fraunhofer IWS, Dresden, 2017), pp. 6–8]. The present approach interlinks the enormous geometrical freedom of powder-bed processing with the scalability of the LMD process. To demonstrate the potential of this approach, two different strategies are pursued. Firstly, a hollow structure demonstrator is manufactured layer wise via LMD with powder and subsequently joined with geometrically complex elements produced via SLM. Afterward, possibilities for a microstructural tailoring within the joining zone via the modification of process parameters are theoretically and practically discussed. Therefore, hybrid sample materials have been manufactured and interface areas are subjected to microstructural analysis and hardness tests. The feasibility of the introduced approach has been demonstrated by both fields of observation. The process combination illustrates a comprehensive way of transferring the high geometric freedom of powder-bed processing to the LMD process. The adjustment of process parameters between both techniques seems to be one promising way for an alignment on a microstructural and mechanical scale.

Place, publisher, year, edition, pages
Laser Institute of America , 2019. Vol. 31, no 2, article id 022317
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-74917DOI: 10.2351/1.5096123Scopus ID: 2-s2.0-85065202471OAI: oai:DiVA.org:ltu-74917DiVA, id: diva2:1329463
Conference
Proceedings of the International Congress of Applications of Lasers & Electro-Optics (ICALEO 2018)
Note

Konferensartikel i tidskrift

Available from: 2019-06-24 Created: 2019-06-24 Last updated: 2019-06-24Bibliographically approved

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Brückner, Frank

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