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Refinement of TiB2 in Al-Ti-B grain refiner alloys by ultrasound and the effect on Al grain size

Shu, Da; Sun, Bao De; Mi, Jia Wei; Grant, Patrick S.

Authors

Da Shu

Bao De Sun

Patrick S. Grant



Abstract

High-intensity ultrasound was applied during the preparation of an Al-5Ti-1B master alloy when reacting fluoride salts with molten Al. The reaction rate was significantly increased with TiB2 particles of much reduced mean diameter and narrow width spread produced in ~4 minutes. The improved grain refining performance of the TiB2 in a commercial purity Al was studied and modelled using free growth model. The increased number and reduced size of TiB2 particles provided an enhanced grain refining capability.

Journal Article Type Article
Publication Date Aug 2, 2010
Journal Materials Science Forum
Print ISSN 0255-5476
Publisher Trans Tech Publications
Peer Reviewed Peer Reviewed
Volume 654-656
Pages 958-961
APA6 Citation Shu, D., Sun, B. D., Mi, J. W., & Grant, P. S. (2010). Refinement of TiB2 in Al-Ti-B grain refiner alloys by ultrasound and the effect on Al grain size. Materials Science Forum, 654-656, 958-961. doi:10.4028/www.scientific.net/msf.654-656.958
DOI https://doi.org/10.4028/www.scientific.net/msf.654-656.958
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