Effects of ultrasonic treatment on dissolved oxygen and nitrogen in liquid low-carbon steel

The effects of ultrasonic treatment on [O] (the concentration of dissolved O) and [N] (the concentration of dissolved N) in low-carbon liquid steel have been studied. The results show that with ultrasonic treatment, [O] decreases, while [N] increases. Higher treatment temperature, higher ultrasonic...

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Bibliographic Details
Published in:Philosophical magazine letters 2012-02, Vol.92 (2), p.103-110
Main Authors: Kong, Wei, Cang, Da-qiang, Song, Jia-hui
Format: Article
Language:English
Subjects:
Acoustic streaming
Applied sciences
Carbon steel
cavitation
Desorption
Dissolution
Exact sciences and technology
Heat treatment
interfacial thermodynamics
Inverse
liquid metals
Liquids
Low carbon steels
metallurgy
Metals. Metallurgy
Nitrogen
Other heat treatments
Oxygen
Production techniques
steel
Steels
Temperature
Ultrasonic imaging
Ultrasonic treatment
Ultrasound
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Summary:The effects of ultrasonic treatment on [O] (the concentration of dissolved O) and [N] (the concentration of dissolved N) in low-carbon liquid steel have been studied. The results show that with ultrasonic treatment, [O] decreases, while [N] increases. Higher treatment temperature, higher ultrasonic power, and longer treatment time enhance these effects. The enrichment of FeO and O on the liquid steel surface produces an inverse relationship between [O] and [N]. The removal of [O] is caused by a negative pressure generated by ultrasound. Acoustic streaming generated by ultrasound contributes to more effective oxygen desorption.
ISSN:0950-0839
1362-3036
DOI:10.1080/09500839.2011.637974