Stress Oriented Hydrogen Induced Cracking of Linepipe Steel

摘要：

The stress oriented hydrogen induced cracking (SOHIC) is a typical hydrogen embrittlement phenomenon occurring in the linepipe steels exposed to sour environment containing H2S gas. However, even recently, the cracking mechanism of SOHIC has not been clarified because of lacking in the empirical data on the actual failure mode of SOHIC cracking. The factors affecting SOHIC are discussed in terms of metallurgy of high strength linepipe steel and hydrogen electrochemistry. The cracking mechanisms of SOHIC are examined by comparing them with the empirical failure mode of SOHIC which is developed by observation of the actual fracture sites of the hydrogen induced blister cracking (HIBC) and secondary cracks. Finally, the correlation between SOHIC and HIC is discussed.

关键词： Linepipe Steel Stress Oriented Hydrogen Induced Cracking Hydrogen Induced Cracking Metallurgical factor Diffusible hydrogen

作者: Wan Keun Kim Gyu Tae Park Kyoo Young Kim

作者单位: Pohang University of Science and TechnologyGraduate Institute of Ferrous Technology,San 31,Hyoja-Dong,Pohang 790-784,Korea

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 118-123

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）