Corrosion Behavior of Low-C Medium-Mn Steel for Offshore Platform Exposed to Seawater Environment

被引：0
|
作者：
Gao X.-H. [1 ]
Zhang D.-Z. [1 ]
Su G.-Q. [1 ]
Du L.-X. [1 ]
机构：
[1] State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang
来源：
Gao, Xiu-Hua (gaoxiuhua@126.com) | 1600年 / Northeast University卷 / 38期
关键词：
Corrosion behavior; Corrosion rate; Drying-wetting cycles; Low-C medium-Mn steel; Micro-morphology;
D O I：
10.12068/j.issn.1005-3026.2017.09.005
中图分类号：
学科分类号：
摘要：
The corrosion behavior of low-C medium-Mn steel in a simulated marine environment was investigated by drying-wetting cycles test. Scanning electron microscope (SEM) was used to characterize corrosion morphology. Electron probe micro-analyzer (EPMA) was utilized to observe the cross-section morphology and analyzed the distribution of Mn. X-ray diffraction (XRD) was employed to study the phase analysis of corrosion rust. The results showed that corrosion rate rises quickly at the beginning then decreases subsequently and finally tends to be stable. Corrosion products are gradually transformed into a dense and thick corrosion rust from the loose and porous morphology with the extension of the corrosion time. The main corrosion product in the high chloride ion environment is γ-FeOOH. In the meanwhile, there are many manganese oxides and iron-manganese oxides in the corrosion rust which were not found in other steels. Those corrosion phases can promote electrochemical reaction and accelerate the corrosion process. © 2017, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1234 / 1238
页数：4
相关论文
共 11 条
  • [1] Liu Z.-Y., Tang S., Chen J., Et al., Latest progress on development and production of steels for offshore platform and their development tendency, Angang Technology, 1, pp. 1-7, (2015)
  • [2] Hao W.-K., Liu Z.-Y., Wang X.-Z., Et al., Current situation and prospect of studies on strength and corrosion resistance of high strength steel for ocean platform, Equipment Environmental Engineering, 11, 2, pp. 50-76, (2014)
  • [3] Chang Y., Wang C.Y., Zhao K.M., Et al., An introduction to medium-Mn steel: metallurgy, mechanical properties and warm stamping process, Materials & Design, 94, pp. 424-432, (2016)
  • [4] Hu J., Du L.X., Liu H., Et al., Structure-mechanical property relationship in a low-C medium-Mn ultra high strength heavy plate steel with austenite-martensite submicro-laminate structure, Materials Science & Engineering A, 647, pp. 144-151, (2015)
  • [5] Liu R., Qin S., Lu A.-H., Et al., The tunnel structure of manganese oxides and hydroxides and environmental significance, Journal of Mineralogy and Petrology, 23, 2, pp. 28-33, (2003)
  • [6] Ma Y., Li Y., Wang F., The effect of β-FeOOH on the corrosion behavior of low carbon steel exposed in tropic marine environment, Materials Chemistry and Physics, 112, 3, pp. 844-852, (2008)
  • [7] Kamimura T., Hara S., Miyuki H., Et al., Composition and protective ability of rust layer formed on weathering steel exposed to various environments, Corrosion Science, 48, 9, pp. 2799-2812, (2006)
  • [8] De La Fuente D., Diaz I., Simancas J., Et al., Long-term atmospheric corrosion of mild steel, Corrosion Science, 53, 2, pp. 604-617, (2011)
  • [9] Qian Y., Ma C., Niu D., Et al., Influence of alloyed chromium on the atmospheric corrosion resistance of weathering steels, Corrosion Science, 74, 4, pp. 424-429, (2013)
  • [10] Zhou Y., Chen J., Liu Z., Corrosion behavior of rusted 550MPa grade offshore platform steel, Journal of Iron and Steel Research, International, 20, 3, pp. 66-73, (2013)
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