GH4169隔板汽封弹簧片断裂分析  

Fracture Analysis on Seal Spring Leaf of Alloy GH4169

作　　者：王梅英[1] 李海霞[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《理化检验（物理分册）》2015年第7期512-513,516,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：通过化学成分分析、硬度测试、金相检验、断口分析、腐蚀产物及受力情况分析等,对某电厂机组的隔板汽封GH4169弹簧片发生断裂的原因进行了研究。结果表明:弹簧片断裂的性质为应力腐蚀开裂,主要原因为弹簧片运行环境中有大量的腐蚀性介质。The fracture reason of GH4169 spring researched by means of chemical composition analysis, leaf for steam seal on a turbine of power plant was hardness testing, metallographic examination, and the analysis on fracture, corrosion products and stress statue. The results showed that the fracture of spring leaf was due to stress corrosion which was caused by masses of corrosive medium in operating environment.

关 键 词：GH4169高温合金 弹簧片 应力腐蚀 腐蚀介质 

分 类 号：TK263.2[动力工程及工程热物理—动力机械及工程]