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Overcoming limitations by process tailoring in laser metal deposition

Presentation held at 9. Internationales Lasersymposium und Internationalen Fügetechnischen Symposium "Tailored Joining" 2016, Dresden, 22.-24.2.2016
: Brückner, Frank; Riede, Mirko; Seidel, André; Willner, Robin; Nowotny, Steffen; Straubel, Ariane; Leyens, Christoph; Beyer, Eckhard

2016, 22 pp.
Internationales Lasersymposium <9, 2016, Dresden>
Internationales Fügetechnisches Symposium "Tailored Joining" <2016, Dresden>
Fraunhofer IWS ()
Anfrage beim Institut / Available on request from the institute

In the meantime, laser-based deposition of metallic material in form of powder or wire became a well industrially established method for the direct coating of large surface areas, the repair of worn parts as well as an additive manufacturing technique to build up complete components. Depending on the chosen system setup, precise structures with weld bead widths below 100 μm are feasible. In contrast, large deposition rates (> 10 kg/h) with weld bead widths larger than 20 mm can be reached by modified system components and high-power laser equipment. Fostered by high industrial demands, materials yielding an increased temperature performance, e. g. in the field of jet engines or stationary gas turbines, are considered for 3D parts but often difficult to handle in small process windows by liquid phase processing. Suitable process tailoring can help to overcome current limitations to manufacture components which fulfill the high performance needs in the aerospace and energy branches [2]. This includes not only modifications of the laser process itself, but also the consideration of hybrid processing and additional sensor equipment. Within this paper, a possible route for the manufacturing of high performance components is shown by means of suited processing steps and the consideration of hybrid approaches.