Multi-Material Processing in Additive Manufacturing

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Ott, M.
Zach, M.F.

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University of Texas at Austin


One of the most important advantages of additive layer manufacturing (ALM) is the ability to produce parts with high geometric complexity in a very economical manner. However, only little effort has been taken in order to enhance aspects of material flexibility of ALM. A modified manufacturing process was developed and different stages concerning the dimensions of multi-material complexity are defined. The technological base being selective laser melting, two varying metallic materials were fused within each layer. Therefore, a new recoating mechanism for non-cohesive powders has been developed. To increase lifetime of tools with abrasive wear environment, hot work steel and tungsten carbide/cobalt have been combined. A tooling insert has been chosen as an example of application.


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