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  4. Intrinsic heat treatment within additive manufacturing of gamma titanium aluminide space hardware
 
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2019
Journal Article
Title

Intrinsic heat treatment within additive manufacturing of gamma titanium aluminide space hardware

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 (g-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.
Author(s)
Seidel, André  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Saha, Shuvra
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Maiwald, Tim
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Moritz, Juliane  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Polenz, Stefan
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Marquardt, Axel  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Kaspar, Joerg  orcid-logo
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Finaske, Thomas
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Lopez, Elena  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Brückner, Frank  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Leyens, Christoph  orcid-logo
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Journal
JOM. The journal of the Minerals, Metals & Materials Society  
DOI
10.1007/s11837-019-03382-2
Language
English
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
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