稀土钇对紫杂铜熔体的净化作用及其对铜带材组织性能的影响  

Purgative Effect of Rare Earth on Molten Metal of Recycled Copper and Study on Structure and Properties of Rolled Copper Strip

作　　者：柳瑞清[1] 许洪赢[1] 黄国杰[2] 郭振兴[1] 

机构地区：[1]江西理工大学材料与化学工程学院,江西赣州341000 [2]北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京100088

出　　处：《热加工工艺》2007年第21期31-34,共4页Hot Working Technology

基　　金：国家863计划资助项目(2006AA03Z522);国家自然基金资助项目(50704006);江西省自然科学基金资助项目(550033)

摘　　要：在紫杂铜的熔炼过程中添加少量的稀土(0.02%、0.04%、0.06%),研究了稀土对熔体的净化作用及对铸态组织的晶粒细化作用,并对该紫杂铜的热加工及冷加工性能以及带材的组织性能进行了研究。结果表明:稀土具有净化熔体,细化铸态合金晶粒的效果,能改善紫杂铜带材的力学性能;少量稀土还可提高紫杂铜的电导率的效果。添加0.04%稀土的紫杂铜,冷轧后经过退火的带材具有良好的性能,其抗拉强度为213.8 MPa;电导率为98.5%IACS,伸长率为23%。The effec（ of rare earth on purifying molten metal and refining grain was studied by adding a little amount of rare earth （0.02%, 0.04%, 0.06%） into molten recycled copper, and the effect of rare earth on structure and properties, especially electric conductivity, of hot-rolled plate and cold-rolled strip of recycled copper were also studied, The results show that the molten metal can be decontaminated and the grains in the structure as-cast are refined by adding rare earth. The tensile strength, elongation and electric conductivity of 0.35mm strip, which is added 0.04% rare earth, are 213.8MPa, 23% and 98.5IACS%, respectively.

关 键 词：稀土 紫杂铜 熔炼 电导率 抗拉强度 

分 类 号：TG243.2[金属学及工艺—铸造]