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Net-Shape Components Produced By Combining Additive Manufacturing And Hot-Isostatic Pressing

  • : Sebastian Riehm1, Anke Kaletsch1, Christoph Broeckmann1, Sandra Wieland2, Frank Petzold2
  • : 1RWTH Aachen University, 2Fraunhofer Institute for Manufacturing Technology and Advanced Materials
  • : PDF Download
  • : 2017


The combination of Additive Manufacturing (AM) and Hot-Isostatic Pressing (HIP) enables the production of complex-shaped components that exhibit full density and excellent mechanical properties. In this study, open thin-walled capsules are manufactured by Selective Laser Melting (SLM). These capsules are filled conventionally with metal powder and hot-isostatically pressed. When only one material is used for both the capsule and the filling, the expensive removing of the capsule after HIP can be omitted. By using two different powders for the capsule walls and the bulk it is possible to produce composite components with a core of high toughness and strength and a wear- or corrosion-resistant surface layer, offering an alternative production route to HIP cladding. Supported by numerical simulation, the capsule can be designed in a netshape geometry after HIP. The successful SLM-building and HIP of monolithic and composite capsules is presented by metallographic and geometrical investigations.


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