Influence of Tin on Properties and Corrosion Behavior of Q125 Grade Tube Used in Deep Well

Abstract:

The influence of Sn on mechanical properties and CO2 corrosion resistance of oil tube was investigated by TEM, EBSD and electrochemical measurement. The results show that the addition of 0.05%Sn can improve the corrosion-resistance of tested steel, but decrease the elongation and impact energy. Sn affected the activity of tested steels, moved corrosion potential to negative potential and decreased corrosion current density. Consequently, the polarization resistance of electrode reaction increased and corrosion reaction was slowed down due to the effect of Sn. In addition, Sn increased the proportion of low boundary, which improved the corrosion resistance of steel, and accordingly decreased the proportion of large angle grain boundary, which contaminated the elongation and impact energy of steel. However, Sn had little influence on the microstructure, precipitates of steel. And thus the strength of steel did not change obviously.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 538-544
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.538
• Online since: June 2012
• Authors: Jun Sheng Zhang, Hui Bin Wu, Li Dong Wang, Sheng Liu, Yue Ting Liu, Di Tang
• Keywords: Average Corrosion Rate, CO₂ Corrosion, Low-Angle of Grain Boundary

References

[1] S. Nesic: Corrosion Science, Vol. 49 (2007), p.4308

[2] Guoxian Zhao, Xianghong Lu, Jianmin Xiang and Han Yong: Journal of Iron and Steel Research International, Vol.16 (4) (2009), p.8

[3] Jianbo Sun, Wei Liu, Wei Chang, Zhonghua Zhang, Zhongtao Li, Tian Yu, Minxu Lu: Acta Metallurgica Sinica, Vol.45(1)( 2009),p.84(in Chinese)

[4] Z.-X.Yuan, J.Jia, A.-M.Guo, D.-D Shen and S.-H Song: Scripta Materialia, Vol.48 (2003), p.203

[5] Jia Juan. Wuhan: Wuhan University of Science and Technology, College of Material and Metallurgy, 2003.

[6] J.Qiu, X.Ju, Y.Xin, S.Liu, Y.L. Wang, H.B.Wu, D.Tang: Journal of Nuclear Materials, 2010, Vol.407 (2010), p.189

[7] S.Morito, H.Yoshida, T.Maki and X. Huang: Materials Science and Engineering A, Vol.428-440(2006), p.237

[8] Hiromoto Kitahara, Rintaro Ueji, Nobuhiro Tsuji and Yoritoshi Minamino: Acta Materialia, Vol.54 (2006), p.1279

DOI: 10.1016/j.actamat.2005.11.001

[9] Chunfang Wang, Maoqiu Wang, Jie Shi, Weijun Hui, Han Dong: Iron and Steel, Vol.42(11)(2007), p.57(in Chinese)

[10] Jianchun Cao, Qilong Yong, Qingyou Liu, Xinjun Sun: Transactions of Materials and Heat Treatment, Vol. 27(5) (2006), p.51 (in Chinese)