1210铝合金导电排蠕变特性及其寿命评估  

Creep Properties and Life Assessment of 1210 Aluminum Alloy Conducting Bars

作　　者：王源 王署斌 马行驰 纪冬梅 Wang Shubin;Ma Xingchi;Wang Yuan

机构地区：[1]上海电力大学能源与机械工程学院,200090 [2]威腾电气集团股份有限公司

出　　处：《工程机械》2024年第8期117-122,I0016,共7页Construction Machinery and Equipment

基　　金：威腾电气集团股份有限公司科技计划资助项目(H2023-033)。

摘　　要：1210铝合金是一种6系改良合金,一般用作高强度的棒材、高强度母线以及导电体等。为了探究1210铝合金的蠕变性能,通过拉伸蠕变试验法研究110℃下1210铝合金的蠕变性能,探究键合铜层对蠕变寿命的影响,并获得该温度下母线槽导电排的本构方程和蠕变寿命预测模型。结果表明:在110℃的工作环境下,初始应力低于90MPa时,蠕变应变速率处于一个较低的水平;通过键合铜层处理,可以大幅延长导电排的蠕变寿命;通过SEM分析断裂机制,试样塑性断裂;并获得了该温度下的应力应变曲线及拟合曲线。由分析结果可知,1210铝合金可以满足导电排使用寿命20年的需求。1210 aluminum alloy is a 6-series improved alloy,generally used as highstrength bars,high-strength busbars and conductors.To explore the creep properties of 1210 aluminum alloy,the creep properties of 1210 aluminum alloy at 110℃are studied by tensile creep test method,the effect of bonded copper layer on creep life is explored,and the constitutive equation and creep life prediction model of busbar conducting bar at this temperature are obtained.The results show that,in the working environment of 110℃,the creep strain rate is at a low level when the initial stress is lower than 90 MPa.Through bonding copper layer treatment,the creep life of the conducting bar can be greatly extended.SEM analysis of the fracture mechanism determines ductile fracture of the specimen.The stress-strain curve and fitting curve at this temperature are obtained.It can be seen from the analysis results that 1210 aluminum alloy can meet the demand for a service life of 20 years for conducting bars.

关 键 词：1210铝合金 蠕变 导电排 断口 

分 类 号：TG146.21[一般工业技术—材料科学与工程]