冷轧变形对引线框架用Cu-Ni-Si合金硬度与导电性能的影响  

Effects of Cold Rolling Deformation on Hardness and Conductivity of Cu-Ni-Si Alloy for Lead Frame

作　　者：刘鸿智 童景琳[2] LIU Hongzhi;TONG Jinglin(Hebi Institute of Engineering and Technology,Henan Polytechnic University,Hebi 458030,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南理工大学鹤壁工程技术学院,河南鹤壁458030 [2]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《热加工工艺》2024年第10期130-132,136,共4页Hot Working Technology

基　　金：河南省科技攻关项目(182102310706);河南省高等学校重点科研项目(22A460020)。

摘　　要：对固溶态Cu-4.0Ni-0.5Si合金进行了不同变形量冷轧试验,采用维氏硬度计、涡流电导仪、SEM等研究了冷轧变形量对冷轧态、时效态Cu-Ni-Si合金的硬度、导电性及组织的影响。结果表明:经过冷轧变形后,Cu-4.0Ni-0.5Si合金的硬度得到明显提高,导电率有所下降。对不同变形量冷轧的合金进行450℃的时效处理,冷轧变形量越大,Cu-4.0Ni-0.5Si合金时效过程中合金元素析出越完全,合金的导电率越高,合金硬度达到峰值的时效时间就越短。80%冷轧+450℃×6 h时效的Cu-4.0Ni-0.5Si合金的导电率最高,为62.5%IACS。Cold rolling experiments with different deformations were carried out for solid solution state Cu-4.0Ni-0.5Si alloy.The effects of cold rolling deformations on the hardness,electrical conductivity and microstructure of cold rolled and aged Cu-Ni-Si alloy were studied by means of Vickers hardness tester,eddy current conductance tester and SEM.The results show that the hardness of Cu-4.0Ni-0.5Si alloy increases obviously and the conductivity decreases after cold rolling.The aging treatment at 450℃for cold rolled alloys with different deformation amounts is carried out,the larger the deformation amount of cold rolled alloy,the more complete the precipitation of alloying elements during the aging process of Cu-4.0Ni-0.5Si alloy,the higher the conductivity of the alloy,and the shorter the aging time for alloy hardness to reach the peak.The conductivity of Cu-4.0Ni-0.5Si alloy with 80%cold rolling+450℃×6 h aging is the highest,which is 62.5%IACS.

关 键 词：Cu-4.0Ni-0.5Si合金 冷轧 硬度 导电性 

分 类 号：TG335.12[金属学及工艺—金属压力加工] TG1461.11[一般工业技术—材料科学与工程]