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Characterisation Of EBM-built Shelled Samples Of Ti6Al4V Compacted By HIP

  • : Karin Frisk1, Lars-Erik Rännar2, Andrey Koptyug2, Niklas Petterson1, Daniel Persson1, Alexander Leicht3, Maheswaran Vattur Sundaram3, Eduard Hryha
  • : 1Swerea KIMAB AB, 2Mid Sweden University, 3Chalmers University of Technology
  • : PDF Download
  • : 2016

Abstract

Compaction of additively manufactured Ti6Al4V components by Hot Isostatic Pressing (HIP) is often applied to eliminate porosity, producing fully dense material. In the present work shelled samples produced by Electron Beam Melting with the Arcam process (EBM) were compacted by HIP to produce fully dense samples. Cylindrical samples were studied. The walls of the cylinders were built with EBM, and the powder from the process was left uncompacted inside the cylinders. Samples with different wall thicknesses were produced. The samples were thereafter subjected to a HIP compaction. The critical wall thicknesses needed for compaction were evaluated, and the microstructures characterized. The results show that fully dense samples, with very fine microstructures, are possible.

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