摘要
本研究对Al-20%Si合金进行超声熔体处理,研究超声功率大小和超声处理时间对熔体中初生硅和共晶硅的影响规律,以及显微硬度的变化。研究发现:在720℃进行超声波处理,随着超声功率的增大,初生硅的尺寸均是先减小后增大,同时合金的显微硬度随着初生硅晶粒尺寸的减小而增大。在1150W超声处理40s时,初生硅的尺寸最小为12.8955μm,合金维氏显微硬度达到最大为91.5HV。
Effects of supersonic power and melt treat times on the microstructure and microhardness of Al-20Si alloys were investigated through supersonic melt treatment.It was found that primary silicon size was decreased with the increase of supersonic powers at 720℃.Meanwhile,the microhardness was increased with the decrease of primary silicon size.The minimμm size of primary silicon was 12.8955μm and the maxim microhardness of Al-20Si alloy was 91.5Hv when the supersonic power was 1150 W and the melt treat times were 40 seconds.
作者
秦新锋
王建东
郭巧琴
李全林
QIN Xin-feng;WANG Jian-dong;GUO Qiao-qin;LI Quan-Lin(Representative Office in State-owned 616 Factory,PLA,Datong Shanxihui 237011,China;Xi’an Military Representative Office,PLA,Xi’an Shaanxi 710032,China;School of Materials&Chemical Engineering,Xi’an Technological University,Xi’an Shaanxi 710032,China;Sate-owned 616 Factory,Datong Shanxi 035000,China)
出处
《科技视界》
2017年第35期11-12,46,共3页
Science & Technology Vision
基金
西安市科技计划2017年项目
课题编号2017075CG/RC038-XADY002
关键词
铝硅合金
超声熔体处理
显微结构
显微硬度
Al-Si Alloy
Supersonic Melt Treatment
Microstructure
Microhardness
