Hybrid Additive Manufacturing of Gamma Titanium Aluminide Space Hardware Show others and affiliations
2018 (English) In: Contributed Papers from Materials Science and Technology 2018 (MS&T18), Association for Iron and Steel Technology (AISTECH) , 2018, p. 13-21Conference paper, Published paper (Refereed)
Abstract [en]
A major part of laser additive manufacturing focuses on the fabrication of metallic parts for applications in the space and aerospace sector. Especially the processing of the very brittle titanium aluminides can be particularly challenging [1-2].
In the present paper a gamma titanium aluminide (γ-TiAl) nozzle, manufactured via Electron Beam Melting (EBM), is extended and adapted via hybrid Laser Metal Deposition (LMD). The presented approach considers critical impacts like processing temperatures, temperature gradients and solidification conditions with particular regard to crucial material properties like the phenomena of lamellar interface cracking [3-6]. Furthermore, the potential of microstructural tailoring is going to be addressed by the process-specific manipulation of the composition and/or microstructure.
In addition to this, selected destructive and non-destructive testing is performed in order to prove the material properties. Finally, post manufacturing and surface modification are briefly addressed.
Place, publisher, year, edition, pages Association for Iron and Steel Technology (AISTECH) , 2018. p. 13-21
Keywords [en]
Crack Prevention, Electron Beam Melting, Energy Source Coupling, Gamma Titanium Aluminides, Hybrid Additive Manufacturing, Laser Additive Manufacturing
National Category
Manufacturing, Surface and Joining Technology
Research subject Manufacturing Systems Engineering
Identifiers URN: urn:nbn:se:ltu:diva-72915 DOI: 10.7449/2018/MST_2018_13_21 Scopus ID: 2-s2.0-85060197494 OAI: oai:DiVA.org:ltu-72915 DiVA, id: diva2:1289153
Conference Materials Science and Technology 2018 (MS&T18), Columbus, United States, October 14-18, 2018
Note ISBN för värdpublikation: 978-087339768-1
2019-02-152019-02-152021-06-02 Bibliographically approved