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

Wajira Mirihanage; Wenwu Xu; Javier Tamayo-Ariztondo; Dmitry Eskin; Mirian Garcia-Fernandez; Prakash Srirangam; Peter Lee

doi:10.1016/j.matlet.2015.11.022

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

Wajira Mirihanage, Wenwu Xu, Javier Tamayo-Ariztondo, Dmitry Eskin, Mirian Garcia-Fernandez, Prakash Srirangam, Peter Lee

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	484-487
Number of pages	4
Journal	Materials Letters
Volume	164
DOIs	https://doi.org/10.1016/j.matlet.2015.11.022
Publication status	Published - 1 Feb 2016

Keywords

Aluminium
Metal matrix nano composites
Synchrotron radiography
Ultrasonic cavitation

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10.1016/j.matlet.2015.11.022

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title = "Synchrotron radiographic studies of ultrasonic melt processing of metal matrix nano composites",

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.",

keywords = "Aluminium, Metal matrix nano composites, Synchrotron radiography, Ultrasonic cavitation",

author = "Wajira Mirihanage and Wenwu Xu and Javier Tamayo-Ariztondo and Dmitry Eskin and Mirian Garcia-Fernandez and Prakash Srirangam and Peter Lee",

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journal = "Materials Letters",

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T1 - Synchrotron radiographic studies of ultrasonic melt processing of metal matrix nano composites

AU - Mirihanage, Wajira

AU - Xu, Wenwu

AU - Tamayo-Ariztondo, Javier

AU - Eskin, Dmitry

AU - Garcia-Fernandez, Mirian

AU - Srirangam, Prakash

AU - Lee, Peter

PY - 2016/2/1

Y1 - 2016/2/1

N2 - 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.

AB - 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.

KW - Aluminium

KW - Metal matrix nano composites

KW - Synchrotron radiography

KW - Ultrasonic cavitation

UR - http://www.scopus.com/inward/record.url?scp=84957008468&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2015.11.022

DO - 10.1016/j.matlet.2015.11.022

M3 - Article

AN - SCOPUS:84957008468

SN - 0167-577X

VL - 164

SP - 484

EP - 487

JO - Materials Letters

JF - Materials Letters

ER -

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

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Structural Evolution across multiple time and length scales

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

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Structural Evolution across multiple time and length scales

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