回复、再结晶中间退火对纯铝导体性能的影响  

Effect of Recovery and Recrystallization Interannealing on Properties of Pure Aluminum Conductor

作　　者：郭新鹏[1] 胡琳[1] 刘东雨[1] 

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

出　　处：《热处理技术与装备》2016年第1期77-80,共4页Heat Treatment Technology and Equipment

基　　金：国家电网公司总部科技项目(5204HB140002)

摘　　要：提高架空输电线路用硬铝线的电导率,开发节能导线为国家电网公司所倡导。通过对硬铝线进行不同温度下的中间退火,研究了回复、再结晶对硬铝线性能的影响。实验结果表明对硬铝线进行180℃回复处理,可在保持硬铝线强度的前提下使其电导率提高0.5%IACS,对硬铝线进行300℃再结晶中间退火可使硬铝线的电导率提高1.5%IACS,但使硬铝线的强度降至140 MPa。再结晶退火过程中过饱和固溶Fe的脱溶析出是导致硬铝线导电率提高的主要原因。Improving the conductivity of aluminum wire used in overhead transmission lines and developing energy-saving conductor are advocated by state grid corporation of China. The effect of recovery and recrystallization on the properties of hard drawn aluminum wire is studied by intermediate annealing of the hard drawn aluminum wire at different temperature. The experimental results show that the hard drawn aluminum wire is improved its electrical conductivity by 0. 5% IACS on the premise of keep the strength by recovery intermediate annealing at 180 ℃,and the recrystallization was carried out on the hard drawn aluminum wire after intermediate annealing at 300 ℃ can increase the conductivity of hard drawn aluminum wire1. 5 % IACS,but its strength reduces to 140 MPa. Exsolution precipitation of supersaturated solid solution of Fe at recrystallization annealing process is the main causes of hard drawn aluminum wire to improve the conductivity.

关 键 词：中间退火 回复 再结晶 硬铝线 

分 类 号：TG166.3[金属学及工艺—热处理] TG146.21[金属学及工艺—金属学]