| Study on H2S stress corrosion test of welded joint for X65pipeline steel and numerical analysis |
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| 作者姓名： | 金晓军 霍立兴 张玉凤 白秉仁 李晓巍 曹军 |
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| 作者单位： | [2]TianjinUniversity,Tianjin,300072 [3]ChinaOffshoreOilEngineeringLtd.,Tianjin,300452 |
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| 摘 要： | The susceptibility of welded joint for the X65 pipeline steel to H2S stress corrosion cracking (SCC) is investigated.SCC tests on the steel are carded out in the environment based on NACE TM-O1-77 solution with saturated gaseous H2S. The threshold stress intensity factor and crack propagation velocity are calculated according to wedge-opening loading (WOL)specimens. The three-dimensional elastic-plastic finite element analysis of WOL specimens is pesformed by using the FEM programming package ANSYS. Stress field and concentration of hydrogen distribution property ahead of the crack tip are obtained. This paper surveyed the microstructure of welded joint and studied on the mechanical properties of X65 pipeline steel.It provides experimental basis for studying stress corrosion. The results of numerical analysis are consistent with conclusions of stress corrosion test.
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| 关 键 词： | X65管线钢 焊接接头 硫化氢 应力腐蚀 数值分析 有限元 |
Study on H2S stress corrosion test of welded joint for X65 pipeline steel and numerical analysis |
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| Jin Xiaojun,Huo Lixing,Zhang Yufeng,Bai Bingren,Li Xiaowei and Cao JunJ Tianjin University,Tianjin,. China Offshore Oil Engineering Ltd.,Tianjin,..Study on H2S stress corrosion test of welded joint for X65pipeline steel and numerical analysis[J].China Welding,2004,13(1):21-26. |
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| Authors: | Jin Xiaojun Huo Lixing Zhang Yufeng Bai Bingren Li Xiaowei and Cao JunJ Tianjin University Tianjin China Offshore Oil Engineering Ltd Tianjin |
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| Affiliation: | 1. Tianjin University,Tianjin,300072
2. China Offshore Oil Engineering Ltd.,Tianjin ,300452 |
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| Abstract: | The susceptibility of welded joint for the X65 pipeline steel to H_2S stress corrosion cracking (SCC) is investigated. SCC tests on the steel are carried out in the environment based on NACE TM-01-77 solution with saturated gaseous H_2S. The threshold stress intensity factor and crack propagation velocity are calculated according to wedge-opening loading (WOL) specimens. The three-dimensional elastic-plastic finite element analysis of WOL specimens is performed by using the FEM programming package ANSYS. Stress field and concentration of hydrogen distribution property ahead of the crack tip are obtained. This paper surveyed the microstructure of welded joint and studied on the mechanical properties of X65 pipeline steel. It provides experimental basis for studying stress corrosion. The results of numerical analysis are consistent with conclusions of stress corrosion test. |
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| Keywords: | stress corrosion finite element microstructure critical stress corrosion factor |
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