Formation and Stability of Near Convoluted Structure Obtained in the Ti-46Al-8Ta Alloy Via Air Quenching and Ageing

Microstructure evolution after air quenching and variable ageing treatment has been investigated in small‐sized ingot bars of the Ti–46Al–8Ta alloy. It was found that air quenching and subsequent ageing at 1200–1260 °C led to the formation of a homogeneous refined near convoluted microstructure. To...

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Bibliographic Details
Published in:Advanced engineering materials 2010-02, Vol.12 (1-2), p.30-34
Main Authors: Imayev, Valery, Gaisin, Ramil, Wunderlich, Rainer, Valiev, Ruslan, Fecht, Hans-Jörg
Format: Article
Language:English
Subjects:
intermetallics
titanium alloys
titanium alumindes
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Summary:Microstructure evolution after air quenching and variable ageing treatment has been investigated in small‐sized ingot bars of the Ti–46Al–8Ta alloy. It was found that air quenching and subsequent ageing at 1200–1260 °C led to the formation of a homogeneous refined near convoluted microstructure. To increase the stability of the near convoluted structure, very slow cooling after high‐temperature ageing and final long‐term ageing at around 900 °C can be recommended. Microstructure evolution after air quenching and variable ageing treatment has been investigated in small‐sized ingot bars of the Ti‐46Al‐8Ta alloy. It was found that air quenching and subsequent ageing at 1200…1260 °C led to formation of a homogeneous refined near convoluted microstructure. To increase the stability of the near convoluted structure, very slow cooling after high‐temperature ageing and final long‐term ageing at around 900 °C can be recommended.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.200900220