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Ultrason Sonochem. 2014 Jul;21(4):1275-8. doi: 10.1016/j.ultsonch.2013.12.024. Epub 2014 Jan 3.

Synchrotron radiation X-ray imaging of cavitation bubbles in Al-Cu alloy melt.

Author information

1
Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai 200240, China.
2
Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: dshu@sjtu.edu.cn.
3
Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, CAS, Shanghai 201204, China.
4
Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai 200240, China; State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.

Abstract

Cavitation bubbles in Al-10 wt.%Cu melt has been investigated by adopting synchrotron radiation X-ray imaging technology. In-situ observation reveals that most of bubbles concentrate within an intense cavitation zone nearby the radiation face. The measured near-maximum bubble radii obey a similar truncated Gaussian distribution as in water but increase by nearly the magnitude of one order due to higher ultrasonic intensity applied in aluminum melt.

KEYWORDS:

Aluminum; Cavitation; Grain refining; Image analysis; Microstructure

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