In the recent years, Laser Additive Manufacturing (LAM) has become a rather well-established manufacturing process to produce metallic parts. However, the very special consolidation conditions during AM with multiple heating and cooling at high rates may lead to complex out-of-equilibrium microstructures, pronounced element segregation and crack formation in the bulk alloy. However, there have been only a limited number of reliably processable alloys used in LAM so far, and the processing parameters are usually obtained in a trial-and-error approach. In order to exploit the advantages of LAM, novel alloys and composites adapted to the special processing conditions during LAM need to be developed. This requires a deep understanding of the materials consolidation process during LAM, which is currently still lacking.
This talk will give an overview of the challenges and opportunities in LAM from a materials scientist’s perspective. Results of the LAM related research at Empa with a special emphasize on the optimization of Ti, Al and Cu based alloys will be presented.
Christian Leinenbach, "Optimizing alloys for laser additive manufacturing (Conference Presentation)," Proc. SPIE 10523, Laser 3D Manufacturing V, 105230J (Presented at SPIE LASE: January 30, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2295335.5751466786001.
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