Robust γ-TiAl Dual Microstructure Concept by Advanced Electron Beam Powder Bed Fusion Technology

Reith M, Franke M, Körner C (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Crystals MDPI

Book Volume: 13

Article Number: 1348

Journal Issue: 9

DOI: 10.3390/cryst13091348

Abstract

The dual microstructure concept for gamma titanium aluminides (γ-TiAl) processed via electron beam–powder bed fusion (PBF-EB) provides a huge potential for more efficient jet turbine engines. While the concept is feasible and the mechanical properties are promising, there are still some challenges. For an industrial application, the heat treatment window has to match the conditions in industrial furnaces. This study shows how the required heat treatment window can be achieved via advanced PBF-EB technology. Through using an electron beam with 150 kV acceleration voltage, the difference in aluminum between the designed aluminum-rich and aluminum-lean regions of the part is increased. Moreover, the aluminum content within each of these regions, respectively, is more homogenous compared to the 60 kV acceleration voltage. This combination provides a heat treatment window of 25 °C, enabling the industrial application of the dual microstructure concept for γ-TiAl.

Authors with CRIS profile

Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM)

Involved external institutions

Neue Materialien Fürth GmbH DE Germany (DE)

How to cite

APA:

Reith, M., Franke, M., & Körner, C. (2023). Robust γ-TiAl Dual Microstructure Concept by Advanced Electron Beam Powder Bed Fusion Technology. Crystals, 13(9). https://doi.org/10.3390/cryst13091348

MLA:

Reith, Marcel, Martin Franke, and Carolin Körner. "Robust γ-TiAl Dual Microstructure Concept by Advanced Electron Beam Powder Bed Fusion Technology." Crystals 13.9 (2023).

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