| 施振功率与温度对工业纯铝凝固组织的影响 |
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| 引用本文： | 蒋日鹏,李晓谦,张立华,胡仕成,刘荣光.施振功率与温度对工业纯铝凝固组织的影响[J].北京科技大学学报,2008,30(11). |
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| 作者姓名： | 蒋日鹏 李晓谦 张立华 胡仕成 刘荣光 |
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| 作者单位： | 中南大学机电工程学院,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)
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| 摘 要： | 在工业纯铝的凝固过程中引入超声场,探讨了超声细化晶粒的机理,并具体研究了超声功率、导入声波的熔体温度区间对铸锭凝固组织的影响规律. 实验结果表明:铝熔体经超声处理后,凝固组织均得到显著细化,这主要取决于超声的空化效应和声流效应;超声功率增大时,组织细化程度提高,功率达到170W时细化效果最好,继续增大功率则细化作用减弱;施振温度区间对凝固组织的影响也有相似的规律,在合理的温度导入声波,晶粒能细化到最佳程度.
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| 关 键 词： | 工业纯铝 熔体温度 凝固组织 空化效应 声流效应 晶粒尺寸 超声功率 |
Effects of ultrasonic power and temperature subjected to vibration on the solidification structure of industrial pure aluminum |
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| JIANG Ripeng,LI Xiaoqian,ZHANG Lihua,HU Shicheng,LIU Rongguang.Effects of ultrasonic power and temperature subjected to vibration on the solidification structure of industrial pure aluminum[J].Journal of University of Science and Technology Beijing,2008,30(11). |
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| Authors: | JIANG Ripeng LI Xiaoqian ZHANG Lihua HU Shicheng LIU Rongguang |
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| Institution: | JIANG Ripeng,LI Xiaoqian,ZHANG Lihua,HU Shicheng,LIU Rongguang College of Mechanical , Electrical Engineering,Central South University,Changsha 410083,China |
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| Abstract: | Ultrasonic field was introduced into the solidification process of industrial pure aluminum.The mechanism of grain refinement by ultrasonic was discussed.The effects of ultrasonic power and melt temperature range subjected to ultrasonic vibration on the solidification structure of casting ingots were studied.The experiment results showed that the solidification structures of aluminum melt were all refined remarkably by ultrasonic treatment due to ultrasonic cavitation effect and acoustic stream effect.The s... |
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| Keywords: | industrial pure aluminum melt temperature solidification structure cavitation effect acoustic streaming effect grain size ultrasonic power |
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