Microstructure and mechanical properties of precision cast TiAl turbocharger wheel

From a technical perspective, many of the unique properties of TiAl-based aluminides making them attractive for high-temperature structural application also assign these alloys a challenge to process into useful products. Cast TiAl alloys due to their relatively low production cost are on the verge...

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Bibliographic Details
Published in:Journal of materials processing technology 2005-08, Vol.167 (1), p.14-21
Main Authors: Jovanović, M.T., Dimčić, B., Bobić, I., Zec, S., Maksimović, V.
Format: Article
Language:English
Subjects:
Microstructure
Precision casting
Processing window
Tensile properties
TiAl
“Self-supporting” ceramic mold
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Summary:From a technical perspective, many of the unique properties of TiAl-based aluminides making them attractive for high-temperature structural application also assign these alloys a challenge to process into useful products. Cast TiAl alloys due to their relatively low production cost are on the verge of a commercial application, especially in vehicle industry. The results concerning technology of precision casting together with microstructural and mechanical tests examinations of a turbocharger TiAl-based wheel prototype have been described. The processing technology of “self-supporting” ceramic shell molds was successfully verified during precision casting of turbocharger wheels. According to all results, a processing window for precision casting was established.
ISSN:0924-0136
DOI:10.1016/j.jmatprotec.2005.03.019