Effect of pH value on stress corrosion cracking of X70 pipeline steel in acidic soil environment

被引：0
|
作者：
Zhiyong Liu
Cuiwei Du
Xin Zhang
Fuming Wang
Xiaogang Li
机构：
[1] University of Science and Technology Beijing,Corrosion and Protection Center
[2] Ministry of Environmental Protection of China,Nuclear and Radiation Safety Center
[3] University of Science and Technology Beijing,School of Metallurgical and Ecological Engineering
来源：
Acta Metallurgica Sinica (English Letters) | 2013年 / 26卷
关键词：
X70 pipeline steel; Soil environment; pH; Stress corrosion cracking;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of pH value on the stress corrosion cracking (SCC) of API X70 pipeline steel in simulated acidic soil solutions was investigated by using slow strain rate test, electrochemical polarization curves, electrochemical impedance spectroscopy, and scanning electron microscopy. pH plays an important role in the susceptibility and electrochemical mechanism of SCC. The pH higher than 5 has no significant effect on electrochemical processes. By contrast, the pH lower than 5 intensifies cathodic hydrogen evolution reactions, thus increasing the cathodic current and corrosion potential. Under different pH values, the SCC mechanism of X70 pipeline steel varies among anodic dissolution (AD), hydrogen embrittlement (HE), and the combination of AD and HE (AD + HE) with variations of applied potential. At −850 mVSCE, the SCC mechanism is HE if pH is less than 4 or AD + HE if pH value is more positive.
引用
收藏
页码：489 / 496
页数：7
相关论文
共 50 条
  • [1] Effect of pH Value on Stress Corrosion Cracking of X70 Pipeline Steel in Acidic Soil Environment
    Liu, Zhiyong
    Du, Cuiwei
    Zhang, Xin
    Wang, Fuming
    Li, Xiaogang
    [J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2013, 26 (04) : 489 - 496
  • [2] Effect of pH Value on Stress Corrosion Cracking of X70 Pipeline Steel in Acidic Soil Environment
    Zhiyong LIU
    Cuiwei DU
    Xin ZHANG
    Fuming WANG
    Xiaogang LI
    [J]. Acta Metallurgica Sinica(English Letters), 2013, 26 (04) : 489 - 496
  • [3] Effect of deteriorated microstructures on stress corrosion cracking of X70 pipeline steel in acidic soil environment
    Zhiyong Liu
    [J]. International Journal of Minerals,Metallurgy and Materials, 2008, (06) : 707 - 713
  • [4] Effect off deteriorated microstructures on stress corrosion cracking of X70 pipeline steel in acidic soil environment
    Liu, Zhiyong
    Zhai, Guoli
    Li, Xiaogang
    Du, Cuiwei
    [J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, 2008, 15 (06): : 707 - 713
  • [5] Stress corrosion cracking behavior of X70 pipe steel in an acidic soil environment
    Liu, Z. Y.
    Li, X. G.
    Du, C. W.
    Zhai, G. L.
    Cheng, Y. F.
    [J]. CORROSION SCIENCE, 2008, 50 (08) : 2251 - 2257
  • [6] Effect of inclusions on initiation of stress corrosion cracks in X70 pipeline steel in an acidic soil environment
    Liu, Z. Y.
    Li, X. G.
    Du, C. W.
    Lu, L.
    Zhang, Y. R.
    Cheng, Y. F.
    [J]. CORROSION SCIENCE, 2009, 51 (04) : 895 - 900
  • [7] Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions
    Cui, Z. Y.
    Liu, Z. Y.
    Wang, L. W.
    Ma, H. C.
    Du, C. W.
    Li, X. G.
    Wang, X.
    [J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2015, 24 (11) : 4400 - 4408
  • [8] Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions
    Z. Y. Cui
    Z. Y. Liu
    L. W. Wang
    H. C. Ma
    C. W. Du
    X. G. Li
    X. Wang
    [J]. Journal of Materials Engineering and Performance, 2015, 24 : 4400 - 4408
  • [9] Characteristics and mechanism of high pH stress corrosion cracking of pipeline steel X70
    Li, Guangfu
    Zhang, Guoliang
    Zhou, Jianjiang
    Huang, Chunbo
    Yang, Wu
    [J]. PROGRESSES IN FRACTURE AND STRENGTH OF MATERIALS AND STRUCTURES, 1-4, 2007, 353-358 : 219 - 222
  • [10] Stress Corrosion Cracking of X70 Pipeline Steel immersed in Synthetic Soil solution
    Galvan-Martinez, R.
    Carmona, A.
    Baltazar, M.
    Contreras, A.
    Orozco-Cruz, R.
    [J]. AFINIDAD, 2019, 76 (585) : 52 - 62
12345