铝镍钴合金温度特性研究  

Study on Temperature Characteristics of AlNiCo Alloy

作　　者：宋凯强 姚雨廷 刘筱薇[2] 杨睿 郭晓杰 孙建春[2] SONG Kaiqiang;YAO Yuting;LIU Xiaowei;YANG Rui;GUO Xiaojie;SUN Jianchun(Southwest Institute of Technology and Engineering,Chongqing 400039;School of Metallurgy and Material Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]西南技术工程研究所,重庆400039 [2]重庆科技学院冶金与材料工程学院,重庆401331

出　　处：《热加工工艺》2023年第6期36-39,共4页Hot Working Technology

基　　金：西南技术工程研究所合作基金项目(HDHDW5902020302);重庆科技学院硕士研究生创新计划项目(YKJCX2120711)。

摘　　要：铝镍钴合金因具有优良的温度特性而在航空航天等领域具有广泛应用,但其磁性能在不同温度中的具体变化规律和趋势目前还无系统研究。参照GJB150A—2009对其开展了系列温度贮存试验,研究了主要磁性能指标随时间的变化规律,并对80、180℃贮存180 d后样品磁通量数据的拟合建模。结果表明,不同贮存温度对LNGT72永磁合金磁性能的影响存在差异,80℃贮存条件对其影响最小,最大磁能积受温度影响最大。在80、120、180℃贮存180 d后,试样磁通量的不逆损失率分别为-0.0285、-0.04045和-0.03429;最大磁能积不可逆损失率分别为-15.22%、-23.29%和-24.78%。80、120、180℃贮存后,磁通量性能退化模型可以用指数模型和线性模型进行较好地表达,指数模型的确定系数优于线性模型。80、120、180℃指数模型校正的确定系数R2分别为0.98714、0.99063和0.99021。AlNiCo alloy is widely used in aerospace and other fields because of its excellent temperature characteristics,but the specific change trend of its magnetic properties at different temperatures is not systematically studied.A series of temperature storage tests were carried out with reference to the national military standard GJB150A—2009,the variation law of main magnetic property indexes with time was systematically studied,and the fitting model of magnetic flux data of samples stored at 80℃and 180℃for 180 d was established.The results show that different storage temperatures have different effects on the magnetic properties of LNGT72 permanent magnet alloy.The storage condition of 80℃has the least effect on it,and the maximum magnetic energy product is the most affected by temperature.After 180 days of storage at 80℃,120℃and 180℃,the irreversible loss rates of magnetic flux is-0.0285,-0.04045 and-0.03429,respectively.The maximum irreversible loss rate of magnetic energy product of the sample is-15.22%,-23.29%and-24.78%,respectively.The magnetic flux performance degradation model can be better expressed by exponential model and linear model.The determination coefficient of exponential model is better than that of linear model.The determination coefficient R2corrected by 80℃,120℃and 180℃exponential model is 0.98714,0.99063 and 0.99021,respectively.

关 键 词：铝镍钴 温度 磁性变化 模型 

分 类 号：TG115.27[金属学及工艺—物理冶金]