| X80管线钢埋弧焊焊接接头的组织和腐蚀性能 |
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| 引用本文： | 周贤良,李晖榕,华小珍,叶志国.X80管线钢埋弧焊焊接接头的组织和腐蚀性能[J].焊接学报,2011,32(1):37-40,80. |
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| 作者姓名： | 周贤良 李晖榕 华小珍 叶志国 |
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| 作者单位： | 1. 南昌航空大学教育部无损检测实验室,南昌,330063;南昌航空大学材料科学与工程学院,南昌,330063
2. 南昌航空大学材料科学与工程学院,南昌,330063 |
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| 基金项目： | 国家自然科学基金，江西省自然科学基金 |
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| 摘 要： | 采用H08MnMoA焊丝埋弧焊焊接X80管线钢.利用扫描电镜分析焊接接头微观组织;采用动电位极化和电化学阻抗法研究了X80管线钢其焊接接头在0.5 mol/LNaHCO3+0.02 mol/L NaCl溶液中的腐蚀行为.结果表明,在0.5 mol/L NaHCO3+0.02mol/L NaCl溶液中,由于显微组织上的差...
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| 关 键 词： | X80管线钢 焊接接头 显微组织 耐蚀性 |
| 收稿时间： | 2009/12/29 0:00:00 |
Microstructures and corrosion properties of submerged arc welded joint for X80 pipeline steel |
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| ZHOU Xianliang,LI Huirong,HUA Xiaozhen and YE Zhiguo.Microstructures and corrosion properties of submerged arc welded joint for X80 pipeline steel[J].Transactions of The China Welding Institution,2011,32(1):37-40,80. |
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| Authors: | ZHOU Xianliang LI Huirong HUA Xiaozhen and YE Zhiguo |
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| Affiliation: | Key Laboratory of Nondestructive Testing of the Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;Materials Science and Engineering School, Nanchang Hangkong University, Nanchang 330063, China,Materials Science and Engineering School, Nanchang Hangkong University, Nanchang 330063, China,Key Laboratory of Nondestructive Testing of the Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;Materials Science and Engineering School, Nanchang Hangkong University, Nanchang 330063, China and Key Laboratory of Nondestructive Testing of the Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;Materials Science and Engineering School, Nanchang Hangkong University, Nanchang 330063, China |
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| Abstract: | The X80 pipeline steel was welded using the submerged-arc welding procedure.The microstructure of the welded joint was observed by scanning electron microscope(SEM),the corrosion behavior of the welded joint of X80 pipeline steel was investigated by method of potentiodynamic polarization and electrochemical impedance spectroscopy(EIS).The results show that the welded joint has good pitting corrosion resistance generally.However in solution of 0.5 mol/L NaHCO3+0.02 mol/L NaCl,the base metal of X80 pipeline steel showed the best resistance to pitting corrosion because of the differences in microstructure.Though it can keep the same level as the base metal at first,the pitting corrosion resistance of weld metal will get worse after longtime immersion.The pitting corrosion resistance of heat-affected zone was always the worst and had a large gap with the base metal and weld metal. |
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| Keywords: | X80 pipeline steel welded joint microstructure corrosion resistance |
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