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Synchrotron radiographic studies of ultrasonic melt processing of metal matrix nano composites

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Mirihanage, Wajira, Xu, Wenwu, Tamayo-Ariztondo, Javier, Eskin, Dmitry, Garcia-Fernandez, Mirian, Srirangam, Prakash and Lee, Peter (2016) Synchrotron radiographic studies of ultrasonic melt processing of metal matrix nano composites. Materials Letters, 164 . pp. 484-487. doi:10.1016/j.matlet.2015.11.022 ISSN 0167-577X.

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Official URL: http://dx.doi.org/10.1016/j.matlet.2015.11.022

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Abstract

Fast synchrotron radiography was used to investigate ultrasonic cavitation bubble formation and their dynamics during liquid metal processing of Al–Cu metal matrix nano composites (MMNC) in comparison with conventional alloys. The experimental observations showed enhanced cavitation potential in MMNC melts, due to the presence of Al2O3 nano particles which were believed to be acting as heterogeneous nuclei for bubble formation. Quantitative image analysis demonstrates that the addition of nano particles increases melt agitation partially, while introducing higher flow velocity variations across the melt. This suggests that the presence of nano particles may substantially alter propensity for ultrasonic treatment effects during solidification processing of MMNCs.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title: Materials Letters
ISSN: 0167-577X
Official Date: 1 February 2016
Dates:
DateEvent
1 February 2016Published
12 November 2015Available
7 November 2015Accepted
18 September 2015Submitted
Volume: 164
Page Range: pp. 484-487
DOI: 10.1016/j.matlet.2015.11.022
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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