| B101连续油管应力腐蚀开裂行为分析 |
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| 引用本文： | 毕宗岳,张昆,雷阿利,冯拉俊. B101连续油管应力腐蚀开裂行为分析[J]. 焊接学报, 2011, 32(4): 29-32 |
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| 作者姓名： | 毕宗岳 张昆 雷阿利 冯拉俊 |
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| 作者单位： | 1. 西安理工大学材料科学与工程学院,西安,710048;宝鸡石油钢管有限责任公司,陕西宝鸡,721008
2. 西安理工大学材料科学与工程学院,西安,710048 |
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| 基金项目： | 国家863高技术研究发展计划资助项目 |
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| 摘 要： | 研究了连续油管的抗H2S环境应力腐蚀开裂(SSCC)行为.利用扫描电镜(SEM)观察了断口形貌,用能谱仪(EDS)分析了断口元素组成,从环境因素、材料组织、化学成分等方面分析了断裂机理.结果表明,母材对应力腐蚀不敏感,焊缝是应力腐蚀的薄弱区域.焊缝断裂可分为裂纹孕育期、裂纹发展期、裂纹快速增长期、完全破坏期.应力在72...
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| 关 键 词： | 连续油管 硫化氢 应力腐蚀开裂 |
| 收稿时间： | 2010-07-09 |
Analysis of stress corrosion cracking behavior of B101 coiled tubing |
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| BI Zongyue,ZHANG Kun,LEI Ali and FENG Lajun. Analysis of stress corrosion cracking behavior of B101 coiled tubing[J]. Transactions of The China Welding Institution, 2011, 32(4): 29-32 |
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| Authors: | BI Zongyue ZHANG Kun LEI Ali FENG Lajun |
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| Affiliation: | School of Materials Science and Engineering, Xi''an University of Technology, Xi''an 710048, China;Baoji Petroleum Steel Pipe Company Limited, Baoji 721008, China,School of Materials Science and Engineering, Xi''an University of Technology, Xi''an 710048, China,School of Materials Science and Engineering, Xi''an University of Technology, Xi''an 710048, China and School of Materials Science and Engineering, Xi''an University of Technology, Xi''an 710048, China |
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| Abstract: | The behavior of H2S stress corrosion cracking of coiled tubing was investigated,the fracture morphology was observed by scanning electron microscope,and the elemental composition of fracture was analyzed by energy disperse spectroscopy.The fracture mechanism was analyzed from the aspects of environment factor,material structure and chemical constitution.The results show that the base metal is insensitive to stress corrosion,and the weld is the weak region of stress corrosion.The weld fracture can be subdivided into four periods:crack incubation period,crack development period,crack rapid growth period with a smoother fractured surface and eventual failure period.The effect of stress change on sulfide stress corrosion cracking is relatively less in the yield strength of 72%-90%.The weld defect,segregation and inclusion are the main factors that make the coiled tubing have low resistance to hydrogen sulfide corrosion. |
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| Keywords: | coiled tubing H2S stress corrosion cracking |
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