Cu－Zn－Al合金中贝氏体的扫描隧道显微镜分析  

Scanning Tunneling Microscope Study on Cu-Zn-Al Bainite

作　　者：杨志刚[1] 冯庆玲[1] 方鸿生[1] 李春明[1] 王家军[1] 黄云庆[1] 

机构地区：[1]清华大学材料系

出　　处：《电子显微学报》1995年第5期341-345,共5页Journal of Chinese Electron Microscopy Society

摘　　要：本文用扫描隧道显微镜（ＳＴＭ）在天气中研究了Ｃｕ－２７．２ｗｔ．％Ｚｎ－４．７ｗｔ．％Ａｌ合金中的贝氏体的精细结构，并与透射电镜（ＴＥＭ）及扫描电镜（ＳＥＭ）下的形态进行了比较，发现Ｃｕ－Ｚｎ－Ａｌ合金中贝氏体是由亚片条或亚单元组成，亚单元由超亚单元构成，进而为贝氏体相变机制的再认识提供了重要的实验基础，并在此基础上提出Ｃｕ－Ｚｎ－Ａｌ合金中贝氏体的形成模型。The fine structure of bainite in Cu-27.2wt.%Zn-4.7wt.%Al alloy has been studied with Scanning Tunnel-ing Microscope(STM)in air.Comparing with the TEM and SEM observation,it has been discovered that thebainite structute in Cu-Zn-Al alloy is composed of subplates.The subplate can be further divided into subunits,and then to ultra-subunits.The results strongly indicate a sympathetic nucleatiom mechanism of bainite reac-tion.

关 键 词：合金 扫描隧道显微镜 贝氏体 铜 锌 铝 

分 类 号：TG146.1[一般工业技术—材料科学与工程] TG115.21[金属学及工艺—金属材料]