6xxx系铝合金导体材料的时效行为  

Aging behaviors of 6xxx series aluminum alloy for conductor materials

作　　者：刘东雨[1,2] 高倩[1] 李宝让[1] 刘静静[1] 侯世香[1] 韩钰[1,3] 陈新 马光 

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]国家火力发电工程技术研究中心,北京102206 [3]国网智能电网研究院电工新材料及微电子研究所,北京100192

出　　处：《材料热处理学报》2013年第S1期7-11,共5页Transactions of Materials and Heat Treatment

摘　　要：综述了6xxx系铝合金导体材料的时效行为。微量元素Cu促进时效进程,减轻停放效应,提高峰值强度,Zr减缓时效进程,改善合金的耐热性,适量稀土对合金的性能产生好的影响。6xxx系铝合金导体材料的使用状态为β!相起主要强化作用的过时效状态。要开发出高电导率中强度铝合金导体材料,必须深入研究低Mg+Si含量的Al-Mg-Si-RE铝合金时效行为。The aging behaviors of 6xxx series aluminum alloy with high electric conductivity were reviewed.The typical trace elements,such as Cu,can accelerate aging process of Al-Mg-Si series alloy,reduce the storage effect and increase the strength peak value obviously while the element Zr can slow the aging rate and in a further step improve the alloy's thermal resistance.Moreover,an appropriate addition amount of rare earth is of benefit to optimize the alloy properties.The performance state of 6xxx series conductive aluminum alloy is a past aging state,in which β′ phase is dominated.In order to fabricate medium strength aluminum alloy materials with high electric conductivity,further investigation on aging behavior of Al-Mg-Si-RE with lower amount of Mg and Si become necessary.

关 键 词：铝合金 导体材料 时效 合金元素 

分 类 号：TG156.92[金属学及工艺—热处理]