形变热处理对复杂黄铜组织和防腐性能的影响  

Effect of Deformation Heat Treatment on Microstructure and Corrosion Resistance of Complex Brass

作　　者：罗文[1] 张庆辉 张宜东 侯鑫鑫 鲍俊杰 LUO Wen;ZHANG Qing-hui;ZHANG Yi-dong;HOU Xin-xin;BAO Jun-jie(School of New Energy and Materials,Southwest Petroleum University,Chengdu,Sichuan,610500,P.R.China)

机构地区：[1]西南石油大学新能源与材料学院,四川成都610500

出　　处：《南方金属》2023年第3期12-16,共5页Southern Metals

基　　金：2021年四川省大学生创新创业项目(S202110615093)。

摘　　要：为了研究复杂黄铜形变热处理-组织结构-电化学性质之间关系,文章利用金相显微镜、X射线衍射仪、扫描电子显微镜以及电化学测试,观察并研究了复杂黄铜形变热处理前后的组织结构以及电化学性质变化。结果表明:形变量的改变会使复杂黄铜的α晶粒变得更紧密,经过热处理之后,复杂黄铜组织变得更加均匀,并且在晶界处产生的金属间化合物(Cu_(3)Sn)变得更多更大;腐蚀电压和腐蚀电流分别在形变量为7.5%,退火温度为600℃时腐蚀电位最低、在形变量3%,退火温度为550℃时腐蚀电流最大。The changes of microstructure and electrochemical properties of complex brass before and after thermomechanical treatment were observed and studied by means of metallographic microscope,X-ray diffractometer,scanning electron microscope and electrochemical test in order to study the relationship between thermomechanical treatment,microstructure and electrochemical properties of complex brass.The results show that the change of shape variable will make theαgrains of the complex brass become more compact.After heat treatment,the complex brass structure becomes more uniform and the intermetallic compound(Cu_(3)Sn)produced at the grain boundary becomes more and larger.The corrosion potential is the lowest when the corrosion voltage and corrosion current are at 7.5% of the deformation respectively and at 600℃ of the annealing temperature,and the corrosion current is the highest at 3%and at 550℃.

关 键 词：复杂黄铜 形变热处理 组织结构 电化学性质 

分 类 号：TG166.2[金属学及工艺—热处理]