| X80管线钢焊缝接头的耐蚀性研究 |
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| 引用本文： | 杨韬,刘征雨,赵健,车东,吴志刚.X80管线钢焊缝接头的耐蚀性研究[J].材料保护,2019,52(1):44-46,77. |
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| 作者姓名： | 杨韬 刘征雨 赵健 车东 吴志刚 |
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| 作者单位： | 辽宁省分析科学研究院,辽宁沈阳,110015;辽宁省分析科学研究院,辽宁沈阳,110015;辽宁省分析科学研究院,辽宁沈阳,110015;辽宁省分析科学研究院,辽宁沈阳,110015;辽宁省分析科学研究院,辽宁沈阳,110015 |
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| 摘 要： | 为研究X80管线钢焊接接头不同部位在碱性土壤溶液中的耐腐蚀性,利用极化曲线、电化学阻抗(EIS)法分别研究了X80管线钢基体(BM)、热影响区(HAZ)和焊缝(WM)的耐蚀性能,并利用XRD分别测量了其晶粒尺寸。结果表明:BM的腐蚀电位最大,腐蚀电流密度最小,即耐腐蚀性最好。与BM相比,HAZ和WM的耐腐蚀性依次降低;晶粒尺寸按BM
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| 关 键 词： | X80管线钢 焊缝接头 焊缝区 钝性元素 晶粒尺寸 扩散 耐蚀性 |
Research of Corrosion Resistance of Welded API X80 Steel |
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| YANG Tao,LIU Zheng-yu,ZHAO Jian,CHE Dong,WU Zhi-gang.Research of Corrosion Resistance of Welded API X80 Steel[J].Journal of Materials Protection,2019,52(1):44-46,77. |
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| Authors: | YANG Tao LIU Zheng-yu ZHAO Jian CHE Dong WU Zhi-gang |
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| Affiliation: | (Liaoning Academy of Analytical Sciences,Shenyang 110015,China) |
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| Abstract: | In order to study the corrosion resistance of different zones of X80 pipeline steel weld joints,the corrosion resistance of based matrix( BM),heat affected zone( HAZ) and weld( WM) of X80 pipeline steel was studied by using polarization curve and electrochemical impedance( EIS) method,and the grain size of different zones was measured by XRD. Results showed that the corrosion resistance of BM was the best with the largest corrosion potential and the smallest corrosion current density. In comparison of BM,the corrosion resistance of HAZ and WM decreased in order. Moreover,the increasing order of grain size was BM
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| Keywords: | X80 pipeline steel weld joint weld zone passivated element grain size diffusion corrosion resistance |
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