Microstructure of Cu-6%Ag Alloys Solidified with Different EMS and Their Drawn Properties

摘要：

　　The effects of different electromagnetic stirring currents on the microstructures of Cu-6%Ag alloys by applying electromagnetic stirring during solidification process are investigated experimentally.The results show that with increasing stirring current,the macro-microstructural grains of the Cu-Ag alloys are refined gradually and evenly distributed.The observation on the microstructure indicates that the primary Cu dendrites become shorter and thicker,and the secondary dendrites are underdeveloped with small-sized equiaxed dendrites with increasing current.Cu-6%Ag alloys solidified with electromagnetic stirring are drawn to the composite wires with different drawing ratios.The results show that their microstructures are refined along the drawing direction when the stirring current increases from 100A to 200A.As the current increases to 350A,the microstructure is not changed obviously.Correspondingly,the tensile strength of Cu-6%Ag alloys increases and the conductivity reduces with increasing drawing rate.Cu-6%Ag alloys could get the better strength with stirring current of 200A,which is consistent with the microstructural results.

关键词： Cu-Ag alloy electromagnetic stirring microstructure strength conductivity

作者: SHANG Xue ZUO Xiao-wei ZHAO Cong-cong WANG En-gang ZHANG Lin HE Ji-cheng

作者单位: Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang,110004,China

会议类型: 国际会议

会议名称: The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2012-10-22（万方平台首次上网日期，不代表论文的发表时间）