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高强超声对Al-2Mg合金凝固组织及除气的影响
Effect of High-intensity Ultrasonic on Solidification Structure and Degassing of Al-2Mg Alloy
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- DOI:
- 作者:
- 史宏林 黄松林 贾征 孙永强 苏鑫
SHI Honglin;HUANG Songlin;JIA Zheng;SUN Yongqiang;SU Xin
- 作者单位:
- 沈阳大学机械工程学院
School of Mechanical Engineering,Shenyang University,Shenyang 110044,China
- 关键词:
- 高强超声 Al-2Mg合金 密度 除气率 空化效应
high-intensity ultrasonic Al-2Mg alloy density degassing efficiency cavitation effect
- 摘要:
- 研究了高强超声处理对Al-2Mg凝固组织及除气的影响。结果表明,应用超声处理可达到很好的细化和除气效果,2 000 W超声处理30 s的细化效果最好,铸锭断面等轴晶最多;处理90 s的除气效果最好,铸锭密度和除气率分别为2.624 4 g·cm-3和51.9%。超声的高频振动产生空化效应持续时间越久,除气效果越明显。The effect of high-intensity ultrasonic treatment on solidification structure and degassing of Al-2 Mg alloy was investigated.The results show that ultrasonic treatment could achieve good refining and degassing effect,the best refining effect is achieved at 30 s with ultrasonic treatment at 2 000 W,and the most isometric crystals are found in the ingot section.The best degassing effect is obtained when treated with 90 s,the ingot density and degassing rate are 2.624 4 g·cm-3 and51.9%,respectively.Ultrasonic cavitation effect created by the high frequency vibration of the longer duration,degassing effect is more apparent.