摘要
以Al-Pb合金为研究对象，研究了超声波处理对合金铸锭溶质分布的影响。利用BSE对试样进行了检测，且测试了试样的硬度以及磨损性能。结果表明：在铸造条件下，采用合适的超声波处理时间能够有效抑制Al-Pb合金的溶质偏析；溶质含量过高时，超声波处理熔体分散溶质效果不好，当处理时间为180s时，A1-1％Pb的分散效果最好；超声波功率对Pb溶质分散性有直接的影响，功率过大或功率过小都达不到令人满意的分散效果。最后，利用超声波的空化效应以及声流效应说明了产生上述现象的原因。
The effect of solute distribution causing by ultrasonic treating using the Al-Pb alloy was studied. The samples were measured by BSE, and the hardness and wearing property of samples was tested. The results indicate that ultrasonic treatment can effectively prevent solute segregation of Al-Pb on the condition of foundry, and the dispersed effect of ultrasonic treatment is not optimum when the contents of solute is excess. It has an optimum dispersed effect for Al-1%Pb when the duration is 180 s. Ultrasonic power has a direct effect on lead solute dispersibility. Oversize power and undersize power can not reach the optimum effect. Finally, the reasons of phenomena above are explained by ultrasonic cavitation and acoustic streaming.
出处
《铸造工程》
2010年第3期22-25,共4页
Foundry Engineering
基金
辽宁省自然科学基金资助项目（20082177）.
关键词
AL-PB合金
溶质分布
BSE
超声波
偏析
空化
声流
Al-Pb alloy
solute distribution
BSE
ultrasonic
segregation
cavitation
acoustic streaming
