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KONG Dejun, WANG Jinchun, YE Cundong. Mechanism of salt spray corrosion of X70 high grade pipeline steel welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(5): 51-54.
Citation: KONG Dejun, WANG Jinchun, YE Cundong. Mechanism of salt spray corrosion of X70 high grade pipeline steel welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(5): 51-54.
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Mechanism of salt spray corrosion of X70 high grade pipeline steel welded joints

  • 1.

    College of Mechanical Engineering, Changzhou University, Changzhou 213164, China;Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China

  • 2.

    College of Mechanical Engineering, Changzhou University, Changzhou 213164, China

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  • Received Date: November 17, 2013
    Graphical Abstract
    • Abstract
  • A neutral salt spray test was carried out for the welded joint of X70 high grade pipeline steel. The morphology and the change of chemical composition of the X70 pipeline steel welded joint before and after salt spray corrosion were observed by SEM and EDS, respectively. The phase before and after salt spray corrosion were also analyzed with X-ray Diffraction (XRD). The ingredient, and corrosion mechanism of the corrosion film on the surface of X70 pipeline steel welded joint were studied. The results show that pitting corrosion and exfoliation corrosion are the main failure modes of the salt spray corrosion. The passivation layer formed on the sample surface is destroyed by the active Cl- ions that contacts with Fe, which is the main cause of corrosive pitting. The tensile stress which is formed during the welding process becomes the source of stress. The stress corrosion cracking leads to the formation of exfoliation corrosion together with the effect of intergranular corrosion. The sample surface was covered by a certain thickness corrosion film, which prevented the sample to contact the corrosive medium and restrains the corrosion proceeding.
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    • References (11)
  • Zhang L, Li X G, Du C W. Effect of environmental factors on electrochemical behavior of X70 pipeline steel in simulated soil solution[J]. Journal of Iron and Steel Research, International, 2009, 16(6): 52-57.
    Jia Z J, Li X G, Dong C F, et al. Analysis of corrosion of hot-rolled X70 steel plate during storage[J]. Engineering Failure Analysis, 2009, 16(7): 2345-2347.
    Bordbar S, Alizadeh M, Hashemi S H. Effects of microstructure alteration on corrosion behavior of welded joint in API X70 pipeline steel[J]. Materials and Design, 2013, 45: 597-604.
    Zhang L, Li X G, Du C W, et al. Effect of applied potentials on stress corrosion cracking of X70 pipeline steel in alkali solution[J]. Materials and Design, 2009, 30: 2259-2263.
    刘智勇, 董超芳, 贾志军, 等. X70钢在模拟潮湿存储环境中的点蚀行为[J]. 金属学报, 2011, 47(8): 1009-1016. Liu Zhiyong, Dong Chaofang, Jia Zhijun, et al. Pitting corrosion of X70 pipeline steel in the simulated wet storage environment[J]. Acta Metallurgica Sinica, 2011, 47(8): 1009-1016.
    孔德军, 吴永忠, 龙 丹. 激光冲击对X70焊接接头慢拉伸电化学腐蚀的影响[J]. 材料科学与工艺, 2012, 20(1): 139-143. Kong Dejun, Wu Yongzhong, Long Dan. Effects of laser shock processing on electrochemical corrosion properties of X70 pipeline steel welded joints by slow strain rate testing[J]. Materials Science and Technology, 2012, 20(1): 139-143.
    Fu A Q, Tang X, Cheng Y F. Characterization of corrosion of X70 pipeline steel in thin electrolyte layer under disbonded coating by scanning Kelvin probe[J]. Corrosion Science, 2009, 51: 186-190.
    孔德军, 吴永忠, 龙 丹. 激光冲击对X70 管线钢焊接接头H2S应力腐蚀断口的影响[J]. 焊接学报, 2011, 32(10): 13-16. Kong Dejun, Wu Yongzhong, Long Dan. Effects of laser shock processing on H2S stress corrosion fractures of X70 pipeline steel welded joints[J]. Transactions of the China Welding Institution, 2011, 32(10): 13-16.
    Yu Q B, Sun Y. Research on pitting corrosion of X70 pipeline steel[J]. Material and Heat Treatment, 2010, 39(2): 1-3.
    苟国庆, 黄 楠, 陈 辉, 等. 高速列车A7N01S-T5铝合金焊接接头盐雾腐蚀行为分析[J]. 焊接学报, 2011, 32(10): 17-20. Gou Guoqing, Huang Nan, Chen Hui, et al. Analysis on corrosion behavior of welded joint of A7N01ST5 aluminum alloy for high-speed train[J]. Transactions of the China Welding Institution, 2011, 32(10): 17-20.
    冯佃臣, 宋义全, 李 涛, 等. X70管线钢在内蒙古土壤中的腐蚀研究[J]. 腐蚀科学与防护技术, 2011, 23(1): 78-80. Feng Dianchen, Song Yiquan, Li Tao, et al. Corrosion behavior of X70 pipeline steel buried in soils at Inner Mongolia[J]. Corrosion Science and Protection Technology, 2011, 23(1): 78-80.
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