本文应用摩擦金属学的基本原理,以扫描电镜为主要工具,以部分电厂汽轮机叶片的断裂事故为研究对象,简要论述了汽轮机动叶根部的微振磨损、微振疲劳的失效过程及其特点,提出了相应的预防措施。 In this paper, the basic principle of friction metallurgy and scanning electron microscopy (SEM) are taken as the main tools. Taking the rupture of steam turbine blade of some power plants as the research object, this paper briefly discusses the fretting wear and the failure process of micro-vibration fatigue and the characteristics of the micro- Put forward the corresponding preventive measures.