Research of G105 Chloride Ion Stress Corrosion Cracking


Article Preview

At present, there are also very few regarding drill pipe's SCC research in chloride ion ambient medium, so it is specially important to definite the stress corrosion sensitivity of drill pipe to the influence under different chloride ion density and to provide the appraisal basis for the influence of the chloride ion density to drill pipe's corrosion. Applied the G105 drill pipe material to do Slow Stress Rate Testing (SSRT) and the electrochemical experiment under the different chloride ion environment, analyzed the variation of corrosion current and corrosion potential and observed the fracture. The results show that all of the tensile specimens' fracture morphologies are brittle fracture; and the stress corrosion cracking sensitivity of the material increases gradually with the addition of chloride ion concentration; the corrosion rate also tends to increase, but when the chloride concentration is 6000, the corrosion rate is up to a extreme value; the effect of chloride concentration to the cathode is much more than that to the anode, but the G105 pipe corrosion in different chloride solution is controlled differently. The stress can improve the stress corrosion cracking sensitivity of material in corrosion solution. The anti-corrosion principle of chloride ion corrosion is: to reduce adsorption of chlorine ion on the surface.



Advanced Materials Research (Volumes 152-153)

Edited by:

Zhengyi Jiang, Jingtao Han and Xianghua Liu




B. S. Huang et al., "Research of G105 Chloride Ion Stress Corrosion Cracking", Advanced Materials Research, Vols. 152-153, pp. 659-665, 2011

Online since:

October 2010




[1] Helin Li. Petroleum Drill String Failure Analysis and Prevention [M]. Beijing: Petroleum Industry Press, 1999(In Chinese).

[2] Jingyi Zuo. Stress Corrosion Cracking[M]. Xi'an: Xi'an Jiao tong University Press, 1985(In Chinese).

[3] Lijie Qiao, Yanbin Wang, Wuyang Zhu. The Stress Corrosion Mechanism[M]. Beijing: Science Press, 1993(In Chinese).

[4] Zhou Yang. The Effects of Hydrogen Sulfide to Stress Corrosion Cracking and Hydrogen Permeation Behavior of Oil Pipeline[J]. Qingdao: Graduate School of Chinese Academy of Sciences (Institute of Marine Research), 2004(In Chinese).

[5] Zhen Li, Guodong Liu . The Research on Sulfide Stress Corrosion Damage of 16MnR steel [J]. Petroleum Machinery, 2006, 34 (9) : 1-3(In Chinese).

[6] Baoming Wei. Metal Corrosion Theory and Applications[M]. Beijing: Chemical Industry Press, 1984(In Chinese).

[7] Jimei Xiao, ChuNan Cao. Materials Corrosion Principles[M]. Beijing: Chemical Industry Press, 2002(In Chinese).

[8] Cole IS, ANDENNA C, translated by Ma Ying-li, proofreaded by Deng Zeng-jie. The Research and Evaluation on the Micro-model of Hydrogen-induced Stress Corrosion Cracking Mechanism of X65 pipeline steel [J]. OCTG, 1996, 4 (1) : 48-55.

[9] Daoxin Liu. The Corrosion and Protection of Materials[M]. Xi'an: Northwest Industry University Press, (2005).

[10] Guocheng Lü, Chunchun XU, Yimin Lü, et al. The Enrichment of Chloride Anion in the Occluded Cell and Its Effect on Stress Corrosion Crack of 304 Stainless Steel in Low Chloride Concentration Solution. Chinese Journal of Chemical Engineering, 2008, 16(4)646-649.