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Effect of Ultrasonic Treatment on Solidification Characteristic andAnalysis the Ultrasonic Attenuation Mechanism
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[1]HU Shicheng,YANG Yunmeng,HU Yongqing,et al.Effect of Ultrasonic Treatment on Solidification Characteristic andAnalysis the Ultrasonic Attenuation Mechanism[J].Journal of Zhengzhou University (Engineering Science),2009,30(04):93-97.
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 30 Number of periods: 2009年04期 Page number: 93-97 Column: Public date: 1900-01-01
Title:
Effect of Ultrasonic Treatment on Solidification Characteristic andAnalysis the Ultrasonic Attenuation Mechanism
Author(s):
HU Shicheng; YANG Yunmeng; HU Yongqing; etc
Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing，Ministry of Education；Central South Uni—versity，Changsha 410083，China
Keywords:
power ultrasonic; temperature curve; solidification structure; cavitation; acoustic stream
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DOI:
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Abstract:
Ultrasonic treatment on pure aluminum solidification process was studied．The cooling temperaturecurves and cavitation and acoustic stream refined by ultrasonic was discussed．Experimental results showedthat solidification structures of casting ingot treated by ultrasonic are refined significantly．The solidificationprocess time becomes shorter and temperature gradient field smaller，Average grain size was 90～500“m，With the increasing of ultrasonic power，more refined structure call be obtained．However，when the ultrasonicpower reaches a certain value and different positions of the the casting ingot，the effect of refining grains doesnot increase significantly．Cavitation effect can effectively function and solidification structure can be refinedbetter aided by agitating effect of acoustic stream．
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Last Update: 1900-01-01
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