Novel hybrid manufacturing process of CM247LC and multi-material blisks

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Abstract

The study on CM247LC used the traditional approach for Near-netshape HIPping (NNSHIP) with sacrificial low carbon steel tooling, which were built by Selective Laser Melting (SLM), to produce a shaped CM247LC blisk. The assessment of the microstructure focused on both the exterior components in order to determine the depth of Fe-diffusion layer and on the interior microstructure. Samples were extracted from the Hot Isostatic Pressed (HIPped) components for tensile testing at both room and elevated temperatures. The components were scanned to assess the geometrical shrinkages due to HIPping. An oversized blisk was also produced based on the measurements as a demonstrator component. In addition, a further study was carried out on a novel idea that used a solid IN718 disk in the centre of the blisk to create a multi-material component.

Details

Original languageEnglish
Article number492
Number of pages16
JournalMicromachines
Volume11
Issue number5
Publication statusPublished - 12 May 2020

Keywords

  • selective laser melting, hot isostatis pressing, hybrid manufacturing, CM247LC, nickel superalloys, multi-material, blisks