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Oxide dispersion strengthening of γ-TiAl by laser additive manufacturing

 
: Rittinghaus, S.-K.; Wilms, M.B.

:

Journal of alloys and compounds 804 (2019), pp.457-460
ISSN: 0925-8388
English
Journal Article
Fraunhofer ILT ()

Abstract
γ-TiAl alloys, as a more and more frequently considered high-temperature material, face the challenge to meet increasingly high demands in property improvement. In the present work, the feasibility of laser additive manufacturing (LAM) of a short-milled powder compound consisting of gas atomized γ-TiAl powder and nano-scaled Y2O3 powder material materials via DED (direct energy deposition) process is demonstrated. Microstructure and hardness of the consolidated sample are presented. As a result, the suitability of the produced powder blend to achieve fully dense and crack free samples with homogenously dispersed Y2O3-particles with LAM is demonstrated.

: http://publica.fraunhofer.de/documents/N-558219.html