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Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
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Kotadia, Hiren and Das, A. (2015) Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation. Journal of Alloys and Compounds, 620 . pp. 1-4. doi:10.1016/j.jallcom.2014.09.089 ISSN 0925-8388.
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Official URL: http://dx.doi.org/10.1016/j.jallcom.2014.09.089
Abstract
In this study, the effect of ultrasonic irradiation is investigated on the solidification microstructure of hypo- and hyper-eutectic Al–Si alloys. Significant grain refinement accompanying dendrite to equiaxed transition was observed for the primary solid in both the alloys. Analysis of cooling curves suggest that enhanced heterogeneous nucleation under ultrasonication is responsible for the refinement of the microstructure. In the region of the ultrasonic energy transfer, strong fluid flow effect resulted in predominant spheroidisation of the eutectic-Si plates.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Journal of Alloys and Compounds | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 0925-8388 | ||||||||
Official Date: | 25 January 2015 | ||||||||
Dates: |
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Volume: | 620 | ||||||||
Page Range: | pp. 1-4 | ||||||||
DOI: | 10.1016/j.jallcom.2014.09.089 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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