电磁搅拌频率对Cu-0.3Sn合金组织及Sn偏析的影响  

Effects of Electromagnetic Stirring Frequency on Microstructure and Segregation of Cu-0.3Sn Alloy

作　　者：段鑫荣 张士宏 陈岩[4] 王松伟 宋鸿武 陈帅峰[3] Duan Xinrong;Zhang Shihong;Chen Yan;Wang Songwei;Song Hongwu;Chen Shuaifeng(School of Rare Earths,University of Science and Technology of China;Ganjiang Innovation Academy,Chinese Academy of Sciences;Shichangxu Advanced Materials Innovation Center,Institute of Metal Research,Chinese Academy of Sciences;Jiangxi Copper Technology Research Institute Co.,Ltd.)

机构地区：[1]中国科学技术大学稀土学院,江西赣州341000 [2]中国科学院赣江创新研究院 [3]中国科学院金属研究所师昌绪先进材料创新中心 [4]江西铜业技术研究院有限公司

出　　处：《特种铸造及有色合金》2023年第4期479-483,共5页Special Casting & Nonferrous Alloys

基　　金：中国科学院重点部署资助项目(ZDRW-CN-2021-3);中国科学院科技服务网络计划区域重点资助项目(KFJ-STS-QYZD-145);中国博士后科学基金资助项目(2019M662276);江西省重大科技研发专项资助项目(20203ABC28W004)。

摘　　要：为了优化Cu-Sn合金丝线坯,改善Cu-Sn合金组织及成分不均匀的问题,以Cu-0.3Sn合金为研究对象,研究了电磁搅拌频率对下引连铸Cu-0.3Sn合金杆坯组织及性能的影响。通过扫描电镜(SEM)、能谱仪(EDS)、光学显微镜(OM)和电导率分析仪等研究了不同电磁搅拌频率下Cu-0.3Sn合金的显微组织、偏析和电导率。结果表明,随着电磁搅拌频率的增加,合金的平均晶粒尺寸和枝晶间距呈现先减小后增大的趋势,合金的晶界偏析得到改善,电导率有所提升。In order to optimize the Cu-Sn alloy wire blanks and modify the microstructure and composition inhomogeneity of Cu-Sn alloys,the effects of different electromagnetic stirring frequencies on the microstructure and properties of the downward continuous casting alloy rod blanks were investigated.The microstructure,segregation and electric conductivity of Cu-0.3Sn alloy with different electromagnetic stirring frequencies were investigated by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),optical microscopy(OM)and conductivity analyzer.The results indicate that with the increase of electromagnetic stirring frequency,the average grain size and dendrite spacing of the alloy is firstly decreased and then increased,where the grain boundary segregation of the alloy is modified,and conductivity is enhanced slightly.

关 键 词：电磁搅拌 Cu-Sn合金 电导率 下引连铸 微观偏析 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG27[金属学及工艺—金属材料] TG249.7[金属学及工艺—金属学]