摘要
对发生开裂的天然气管道进行了系统的分析与测试,如宏观分析、成分分析、金相组织分析、硬度测试、氢含量测试、扫描电镜观察等。结果表明,管道开裂的机理为氢致开裂,管道局部的划伤是管道发生开裂的主要原因。
A series of tests were carried out on the natural gas pipeline, such as macroscopic analysis, chemical composition analysis, metallographic analysis, hardness tests, hydrogen content and scanning e lectron microscope analysis. Based on the test results, the failure reasons are discussed. The failure mecha-nism is hydrogen induced crack, and the scratch on the pipeline is the major factor.
出处
《压力容器》
2013年第11期47-51,共5页
Pressure Vessel Technology
关键词
氢致开裂
失效分析
天然气管道
hydrogen induced cracking
failure analysis
natural gas pipeline
