Dr. Christian Leinenbach Profile

Dr. Christian Leinenbach

Head Designer at Empa

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Proceedings Article | 14 March 2018 Presentation

Optimizing alloys for laser additive manufacturing (Conference Presentation)

Christian Leinenbach

Proceedings Volume 10523, 105230J (2018) https://doi.org/10.1117/12.2295335

KEYWORDS: Additive manufacturing, Laser manufacturing, Composites, Materials processing, Aluminum, Copper

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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.

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