均匀化退火对纯铝系负极箔坯料显微组织的影响  

Influence of Homogenization Annealing on Microstructure of Pure Aluminum Cathode Foil Stock

作　　者：赵红亮[1] 吴迪[1] 翁康荣[1] 胡冠奇 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450001 [2]登电集团铝加工有限公司,河南登封452477

出　　处：《郑州大学学报（工学版）》2016年第2期42-45,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51174177)

摘　　要：铸轧纯铝系负极箔坯料存在粗大且分布不均匀的第二相,均匀化退火对坯料中第二相尺寸和分布有重要影响.通过均匀化退火实验研究了退火温度和保温时间对纯铝系负极箔冷轧坯料中第二相尺寸和分布的影响.结果表明:在保温时间为10 h时,随着退火温度升高,弯曲带状Fe Al共晶相逐渐溶解球化,条状β(Fe Al Si)相分解为短棒状,当温度升高至550℃时,针状相Fe Al^3开始析出;在退火温度为520℃时,随退火时间的延长,粗大第二相的比例不断减小,而后趋于稳定;冷轧变形率为38.5%的铸轧纯铝系负极箔冷轧坯料经520℃保温10 h退火后可获得较均匀的组织.Coarse and non-uniform secondary phase are located in the cast-rolling cathode foil stock of pure aluminum. The size and distribution of the secondary phase are significantly influenced by homogenization annealing. Effects of temperature and holding time on the secondary phase size and distribution of the cathode foil stock were investigated with the method of homogenization annealing experiments. The result shows： When holding time is 10 h,with the increase of annealing temperature,the strip Fe-Al eutectic phase are gradually dissolved and spheroidal,while the stripy β（ Fe Al Si） phase are converted into small rod-shaped compounds. Till it＇s up to 550 ℃,the needle-like Fe Al_3 phase grow in the matrix; When the temperature is 520 ℃,with the increase of holding time,the proportion of the coarse secondary phase is decreased and reached a steady level at last. Finally,at 520 ℃ /10 h,the microstructure of 38. 5% deformation cathode foil stock is desirable.

关 键 词：铸轧 负极箔 均匀化退火 显微组织 FeAl3相 

分 类 号：U463.1[机械工程—车辆工程]