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Volume 25 Issue 3
Mar.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(3): 315-324
Hui-bin Wu, Tao Wu, Gang Niu, Tao Li, Rui-yan Sun, and Yang Gu, Effect of the frequency of high-angle grain boundaries on the corrosion performance of 5wt%Cr steel in a CO2 aqueous environment, Int. J. Miner. Metall. Mater., 25(2018), No. 3, pp. 315-324. https://doi.org/10.1007/s12613-018-1575-x
Cite this article as:
Hui-bin Wu, Tao Wu, Gang Niu, Tao Li, Rui-yan Sun, and Yang Gu, Effect of the frequency of high-angle grain boundaries on the corrosion performance of 5wt%Cr steel in a CO2 aqueous environment, Int. J. Miner. Metall. Mater., 25(2018), No. 3, pp. 315-324. https://doi.org/10.1007/s12613-018-1575-x
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研究论文

Effect of the frequency of high-angle grain boundaries on the corrosion performance of 5wt%Cr steel in a CO2 aqueous environment

  • Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China;

  • National Engineering Research Center of Advanced Rolling, University of Science and Technology Beijing, Beijing 100083, China;

  • Survey and Design Institute of Jilin Oilfield Company, Jilin 138000, China

  • 通讯作者:

    Tao Wu    E-mail: wutao940195398@163.com

  • The corrosion behavior of 5wt%Cr steel tempered at different temperatures was investigated by immersion testing and electrochemical testing in a CO2 aqueous environment. When the tempering temperature exceeded 500℃, the corrosion rate increased. The corrosion layers consisted of Cr-rich compounds, which affected the corrosion behaviors of the steels immersed in the corrosive solution. The results of electrochemical experiments demonstrated that 5wt%Cr steels with different microstructures exhibited pre-passivation characteristics that decreased their corrosion rate. Analysis by electron back-scattered diffraction showed that the frequency of high-angle grain boundaries (HAGBs) and the corrosion rate were well-correlated in specimens tempered at different temperatures. The corrosion rate increased with increasing HAGB frequency.
    • Research Article

    Effect of the frequency of high-angle grain boundaries on the corrosion performance of 5wt%Cr steel in a CO2 aqueous environment

    + Author Affiliations
      Abstract
    • The corrosion behavior of 5wt%Cr steel tempered at different temperatures was investigated by immersion testing and electrochemical testing in a CO2 aqueous environment. When the tempering temperature exceeded 500℃, the corrosion rate increased. The corrosion layers consisted of Cr-rich compounds, which affected the corrosion behaviors of the steels immersed in the corrosive solution. The results of electrochemical experiments demonstrated that 5wt%Cr steels with different microstructures exhibited pre-passivation characteristics that decreased their corrosion rate. Analysis by electron back-scattered diffraction showed that the frequency of high-angle grain boundaries (HAGBs) and the corrosion rate were well-correlated in specimens tempered at different temperatures. The corrosion rate increased with increasing HAGB frequency.
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