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Phenomena in multi-material fabrication using laser metal deposition
Author(s): Frank Brueckner; Johannes C. Schab; Franz Marquardt; Michael Müller; Mirko Riede; André Seidel; Elena López; Christoph Leyens
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Paper Abstract

Additive Manufacturing (AM) processes as Laser Metal Deposition (LMD) addresses various benefits such as the build-up of complex shaped parts, the possibility of functional integration, reduced lead times or the use of difficult machinable materials compared to conventional manufacturing possibilities. Beside mentioned advantages, the use of more than one material in a component strongly increases the field of applications. Similar to structures in nature, multi-material arrangements can be realized by (I) sharp intersections from one material to the other (e. g. in the case of a thin corrosion protection), (II) graded structures enabling smoother material transitions (e. g. dissimilar materials joined together without defects), (III) composite structures with enclosed particles in a matrix material as well as by (IV) in-situ alloying of different material compositions. Due to varying material properties (e.g. thermo-physical, mechanical, optical), the combination of materials often requires a detailed investigation of occurring process phenomena and well-chosen modifications of the process regimes. Within this paper, (a) the right material feeding as well as powder interaction between various materials in Laser Metal Deposition, (b) the suitable selection of laser wavelengths for different materials, (c) process window adjustments by means of additional sensor equipment, (d) limitations of material combinations as well as (e) results and material characterization of multi-material parts are discussed. Phenomena are discussed by means of exemplary industrial applications, e.g. from the jet engine or medical business.

Paper Details

Date Published: 4 March 2019
PDF: 11 pages
Proc. SPIE 10909, Laser 3D Manufacturing VI, 109090H (4 March 2019); doi: 10.1117/12.2513570
Show Author Affiliations
Frank Brueckner, Fraunhofer Institute for Material and Beam Technology (Germany)
Lulea Univ. of Technology (Sweden)
Johannes C. Schab, Fraunhofer Institute for Material and Beam Technology (Germany)
Franz Marquardt, Fraunhofer Institute for Material and Beam Technology (Germany)
Michael Müller, Fraunhofer Institute for Material and Beam Technology (Germany)
Technische Univ. Dresden (Germany)
Mirko Riede, Fraunhofer Institute for Material and Beam Technology (Germany)
André Seidel, Fraunhofer IWS Dresden (Germany)
Elena López, Fraunhofer Institute for Material and Beam Technology (Germany)
Christoph Leyens, Fraunhofer Institute for Material and Beam Technology (Germany)
Technische Univ. Dresden (Germany)


Published in SPIE Proceedings Vol. 10909:
Laser 3D Manufacturing VI
Bo Gu; Henry Helvajian; Hongqiang Chen, Editor(s)

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