La,Fe(或Co)/Ti对Cu-Cr-Zr合金时效特性的影响  

Effect of La,Fe( or Co)/Ti on Aging Characteristic of Copper Alloys

作　　者：黄福祥[1] 马莒生[1] 耿志挺[1] 宁洪龙[1] 铃木洋夫[1] 郭淑梅 余学涛 王涛 李红 李鑫成 

机构地区：[1]清华大学,北京100084 [2]洛阳铜加工集团,河南洛阳471039

出　　处：《稀有金属材料与工程》2004年第3期267-270,共4页Rare Metal Materials and Engineering

摘　　要：研制了新型集成电路引线框架Cu-Cr-Zr系列合金,通过电导率、硬度、抗拉强度测试以及透射电镜观察,考察了微量合金元素La,Fe/Ti,Co/Ti元素以及时效工艺对合金性能的影响。结果表明:稀土元素La可以改善A合金(Cu-Cr-Zr-Zn)的硬度及导电率;加入Fe/Ti,Co/Ti元素,大大提高了合金的强度和硬度,并使其时效的强度及硬度峰值延后。在970℃固溶处理、70%冷变形及不同温度时效2 h后,A合金(Cu-Cr-Zr-Zn)及B合金(Cu-Cr-Zr-Zn-La)在450℃时达到硬度和强度峰值,分别为HV 1 770 MPa和525 MPa及HV 1 840 MPa和554 MPa,电导率分别为78%和80%IACS;在970℃固溶处理,60%冷变形,500℃时效2 h,50%冷变形及不同温度2次时效2 h后,C合金(Cu-Cr-Zr-Zn-Fe-Ti-La)及D合金(Cu-Cr-Zr-Zn-Co-Ti-La)在450℃时达到硬度和强度峰值,分别为HV 2 120 MPa,683 MPa及HV 2 040 MPa和651 MPa,电导率分别为65%和70%IACS。The effect of La, Fe(or Co)/Ti on the aging characteristics of Cu-Cr-Zr-Zn alloys were investigated. The results showed that the peak hardness and strength of Cu-Cr-Zr-Zn alloy and Cu-Cr-Zr-Zn-La alloy occurs at about 450degreesC for 2h after solution treated and followed by 70% reduction which is HV 1 770 MPa, 525 MPa and HV 1 840 MPa, 554 MPa, respectively. The peak hardness and strength of Cu-Cr-Zr-Fe-Ti-Zn-La alloy and Cu-Cr-Zr-Co-Ti-Zn-La alloy occurs at about 450degreesC for 2h after solution treated and followed by 70% reduction and aged at 500degreesC for 2 h and cold worked by, which is HV 2 120 MPa, 683 MPa, and HV 2 040 MPa, 651 MPa, respectively.

关 键 词：CU-CR-ZR合金 时效特性 微量合金元素 LA FE TI CO TI 电导率 硬度 抗拉强度 

分 类 号：TG132[一般工业技术—材料科学与工程]