超声处理对Al-5Si合金除气效率的影响  

Effect of Ultrasonic Treatment on Degassing Efficiency of Al-5Si Alloy

作　　者：杜安娜 刘岩 贾征[1] 徐海鹏 陈杼鑫 DU An-na;LIU Yan;JIA Zheng;XU Hai-peng;CHEN Zhu-xin(College of Mechanical Engineering,Shenyang University,Shenyang 110044,Liaoning,China)

机构地区：[1]沈阳大学机械工程学院,辽宁沈阳110044

出　　处：《铸造》2020年第10期1072-1076,共5页Foundry

基　　金：辽宁省高等学校创新人才支持计划(LR2019042);辽宁省自然科学基金项目(2019-ZD-0545、2019-ZD-0561);2019年沈阳大学大学生创新创业训练计划项目(2019110350102);国家自然科学基金资助项目(51901037);辽宁省博士启动基金项目(2019-BS-083)

摘　　要：考察了超声处理对Al-5Si合金除气效率的影响,对超声除气的机理进行了分析。研究发现,恰当的超声处理时间对合金有良好的除气效果;当超声处理时间为60〜120s时,铸锭的除气效果比较理想,密度和除气率最大值分别达到2.6613 g/cm^3和69.0%;同时,超声处理可使共晶Si颗粒变得分散和均匀;采用C2Cl6除气剂-超声联合处理可在短时间内达到良好除气效果,具有很高的除气效率。The effect of high-strength ultrasonic treatment on degassing efficiency of Al-5Si alloy was investigated in this work and the mechanism of ultrasonic degassing was analyzed. The study found that the proper ultrasonic treatment time has a good degassing effect on the alloy. When the ultrasonic duration is 60-120 s, the degassing effect of the ingot is relatively ideal, and the maximum density and degassing rate can reach 2.661 3 g·cm-3 and 69.0%, respectively. At the same time, ultrasonic treatment can make the eutectic Si phase particles dispersed and uniform. Combination of C2Cl6 degasser with ultrasonic treatment is most efficient for degassing in a short time and has a high degassing efficiency.

关 键 词：超声处理 Al-5Si合金 密度 除气率 C2Cl6除气剂-超声联合处理 

分 类 号：TG146.2[一般工业技术—材料科学与工程]