横向静磁场对Cu-10%Ag合金定向凝固组织的影响  

Effect of horizontal magnetic field on the microstructure of directionally solidified Cu-10%Ag alloy

作　　者：李贵茂[1] 柳艳[2] 邹兴政[3] 于富琳[1] 李春荣[1] 王恩刚[4] 韩柯 

机构地区：[1]沈阳机床集团银丰铸造有限公司,辽宁沈阳110200 [2]沈阳汽车工业学院机械工程系,辽宁沈阳110015 [3]重庆材料研究院,重庆400707 [4]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110819 [5]佛罗里达州大学国家强磁场实验室,美国塔拉哈西fl32310

出　　处：《功能材料》2013年第15期2197-2201,共5页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA03Z519);国家自然科学基金资助项目(51004038);高等学校学科创新引智计划资助项目(B07015);"高档数控机床与基础制装备"科技重大专项资助项目(2012ZX04010031-2)

摘　　要：在有无横向静磁场条件下进行了Cu-10%Ag(质量分数)合金定向凝固实验,研究了横向磁场对Cu-10%Ag合金的宏观组织和微观组织及硬度的影响。发现无磁场条件下,合金晶粒较长,尺寸粗大,初生Cu枝晶臂直径和间距较粗大,取向较好,共晶组织粗大;1T横向磁场条件下,晶粒细化、增多,枝晶臂直径和间距较小,取向消失,共晶组织细化,硬度提高。通过对比有无横向磁场条件下初生Cu枝晶以及共晶组织变化,讨论了横向磁场对初生Cu枝晶及共晶组织的影响机理。The directional solidification experiment of Cu-10%Ag alloy was carried out under horizontal static magnetic field,the macrostructure,microstructure and hardness of Cu-10%Ag were investigated.Without magnetic field condition,it was found that the grains were coarser and longer,the diameter arms and spacing of Cu dendrites were coarser too,moreover,the orientation of the dendrites was uniform,meanwhile,the size of the eutectic was larger;with 1T horizontal magnetic field,the grains increased quantitatively and became refinement,the diameter and spacing of Cu dendrites became thinner,and the orientation of the dendrites was random,moreover,the size of the eutectic was smaller and the hardness increased too.Though comparing the difference of the proeutectic Cu dendrites and eutectic with and without horizontal magnetic field,the mechanism was discussed in this paper.

关 键 词：横向磁场 Cu-10%Ag合金 定向凝固 

分 类 号：TG146.1[一般工业技术—材料科学与工程]