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首页> 外文期刊>ISIJ international >Improvement of Corrosion Resistance of Simulated Weld Heat Affected Zone in High Strength Pipeline Steel Using Electropulsing
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Improvement of Corrosion Resistance of Simulated Weld Heat Affected Zone in High Strength Pipeline Steel Using Electropulsing

机译：用电动扫描改善高强度管线钢中模拟焊接热影响区的耐腐蚀性

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摘要

Subjected to quenching processing, the samples of weld heat affected zone containing microstructures of martensite in high strength pipeline steel were simulated and prepared. Effects of electropulsing treatment on the corrosion resistance of simulated samples were studied through electrochemical detections and immersion corrosion experiments. It was found that the corrosion resistance of pipeline steel decreased sharply due to the high lattice strains/dislocation densities and residual tensile stress developed after martensite transformation by water quenching. Interestingly, treated by electropulsing the corrosion resistance of simulated weld heat affected zone samples was dramatically improved, and even exceeded that of the base metal when the current density achieved 5.2 kA/mm~2. After electropulsing treatment, the dislocation density and residual stress of the investigated samples were reduced largely, and the rust layer generated after corrosion was more compact, so that its corrosion resistance was improved.
机译：进行淬火加工，模拟并制备含有高强度管线钢中马氏体微观结构的焊接热影响区的样品。通过电化学检测和浸没腐蚀实验研究了篡禁止对模拟样品耐腐蚀性的影响。结果发现，由于水猝灭后马氏体转化后发育的高晶格菌株/位错密度和残留拉伸应力，管道钢的耐腐蚀性急剧下降。有趣的是，通过篡改模拟焊接热影响区域样品的耐腐蚀性对抗耐腐蚀性，甚至超过当电流密度达到的5.2ka / mm〜2时甚至超过基础金属的。在拍摄处理后，腐蚀后产生的脱位密度和所研究的样品的残留应力减少，腐蚀后产生的锈层更紧凑，从而改善了其耐腐蚀性。

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  • 来源
    《ISIJ international》 |2020年第9期|2015-2023|共9页
  • 作者

    Shengli DING; Siqi XIANG; Xin BA; Xinfang ZHANG1; Yabo FU;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    Key Lab of Printing & Packaging Materials and Technology Beijing Institute of Graphic Communication Beijing 102600 P.R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    pipeline steel; welding; corrosion resistance; electropulsing; heat affected zone;

    机译：管道钢;焊接;耐腐蚀性能;电禁止;热影响区域;

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