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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。
In this paper, the scanning tunneling microscope (STM) in the weather studied Cu-27.2wt. % Zn-4.7 wt. % Al alloy. The microstructure of the bainite in the Cu-Zn-Al alloy was compared with that under the transmission electron microscope (TEM) and the scanning electron microscope (SEM) Unit composition and the subunits are composed of super subunits, which provides an important experimental basis for re-understanding the mechanism of bainite transformation. On this basis, the formation model of bainite in Cu-Zn-Al alloy is proposed.