Intrinsic Heat Treatment Within Additive Manufacturing of Gamma Titanium Aluminide Space Hardware

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • André Seidel - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Shuvra Saha - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Tim Maiwald - , Chair of Materials Technology, Fraunhofer Institute for Material and Beam Technology, TUD Dresden University of Technology (Author)
  • Juliane Moritz - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Stefan Polenz - , Chair of Materials Technology, Fraunhofer Institute for Material and Beam Technology (Author)
  • Axel Marquardt - , Chair of Materials Technology, Fraunhofer Institute for Material and Beam Technology, TUD Dresden University of Technology (Author)
  • Joerg Kaspar - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Thomas Finaske - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Elena Lopez - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Frank Brueckner - , Fraunhofer Institute for Material and Beam Technology, Luleå University of Technology (Author)
  • Christoph Leyens - , Chair of Materials Technology, Fraunhofer Institute for Material and Beam Technology, TUD Dresden University of Technology (Author)

Abstract

A major part of laser additive manufacturing focuses on the fabrication of metallic parts for applications in the space and aerospace sectors. Especially, the processing of the very brittle titanium aluminides can be particularly challenging because of their distinct tendency to lamellar interface cracking. In the present paper, a gamma titanium aluminide (γ-TiAl) nozzle, manufactured via electron beam melting, is extended and adapted via hybrid laser metal deposition. The presented example considers a new field of application for this class of materials and approaches the process-specific manipulation of the composition and/or microstructure via the adjustment of processing temperatures, temperature gradients and solidification conditions. Furthermore, intrinsic heat treatment is investigated for electron beam melting and laser metal deposition with powder, and the resulting influence is releated to conventional processing.

Details

Original languageEnglish
Pages (from-to)1513-1519
Number of pages7
JournalJOM
Volume71
Issue number4
Publication statusPublished - 15 Apr 2019
Peer-reviewedYes

External IDs

ORCID /0000-0001-8126-8532/work/173053207

Keywords