External Stress Corrosion Cracking Risk Factors of High Grade Pipeline Steel

Abstract:

The influence weights of various sensitive factors, such as steel grade, applied potential, temperature and soil environment, on stress corrosion cracking behavior of high-grade pipeline steel were studied by means of orthogonal test at mixed level and slow strain rate test. The stress corrosion behavior of X80 pipeline steel in near neutral and high pH simulated soil solution under overprotection potential was observed by SEM. The results showed that the applied potential has the greatest weight on stress corrosion index of ISSRT, followed by temperature, steel grade and soil environment. X80 pipeline steel exhibits high stress corrosion sensitivity in near-neutral and high pH simulated soil solutions at applied potential of -1500mV, and its SCC mechanism is hydrogen embrittlement (HE). This study can provide guidance for practical engineering application of pipeline steel.

• Periodical: Materials Science Forum (Volume 993)
• Pages: 1270-1276
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.993.1270
• Online since: May 2020
• Authors: Li Xia Zhu*, Jin Heng Luo, Gang Wu, Li Feng Li, Lei Li, Yi Wu
• Keywords: Applied Potential, Pipeline Steel, Risk Factor, Stress Corrosion Cracking, Weight

References

[1] Feng Yaorong, Huo Chunyong, Ji Lingkang, etc. Progress and prospects of research and applications of high grade pipeline steels & steel pipes in China [J]. Petroleum Science Bulletin, 2016, 1(01): 143-153.

[2] Liu Zhiyong, Li Xiaogang, Du Cuiwei. Key factors affecting corrosion of high rength pipeline steels in soli enviroments[C]. Langfang: Proceeding of CIPC2011, 2011: 24-29.

[3] Liang P, Li X G, Du C W, et al. Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution [J]. Materials and Design, 2009, 30(5): 1712-1717.

DOI: 10.1016/j.matdes.2008.07.012

[4] Z.Y. Liu, X.G. Li, Y.F. Cheng. In-situ characterization of the electrochemistry of grain and grain boundary of an X70 steel in a near-neutral pH solution [J]. Electrochem Commun, 2010, 12 (7): 936-938.

DOI: 10.1016/j.elecom.2010.04.025

[5] Zhang Liang, Li Xiaogang, Du Cuiwei, etc. Progress in study of factors affecting stress corrosion cracking of pipeline ssteels[J]. Corrosion science and protection technology, 2009, 21(1): 62-65.

[6] R.L. Eadie, K.E. Szklarz, R.L. Sutherby. Corrosion fatigue and near-neutral pH stress corrosion cracking of pipeline steel and the effect of hydrogen sulfide [J]. Corrosion, 2005, 61: 2.

DOI: 10.5006/1.3278171

[7] Ming Chun Zhao, K. Yang, Strengthening and improvement of sulfide stress cracking resistance in acicular ferrite pipeline steels by nano-sized carbonitrides[J]. Scr. Mater, 2005, 52 (9): 881-886.

DOI: 10.1016/j.scriptamat.2005.01.009

[8] Zhang Liang, Li Xiaogang, Du Cuiwei, etc. Effect of applied potentials on stress corrosion cracking of X70 pipeline steel in simulated Ku'erle soil solution [J]. Journal of chinese society for corrosion and protection, 2009,29(5): 353-359.

DOI: 10.1016/j.matdes.2008.09.019

[9] Zhao Xinwei, Zhang Guangli, Zhang Liang, etc. Influence of applied potential on stress corrosion cracking behavior of X80 pipeline steel in near-neutral pH soil environment [J]. Oil & Gas Storage and Transportation, 2014, 33(11): 1152-1158.

[10] Liu Zhiyong, Wang Changpeng, Du Cuiwei, etc. Effect of applied potentials on stress corrosion cracking of X80 pipeling steel in simulated YingTan soil solution[J]. Acta metallurgica sinica, 2011, 47(11): 1434-1439.

DOI: 10.3724/sp.j.1037.2012.00374

[11] Wang Dan, Xie Fei, Wu Ming, etc. Effect of cathode potentials on stress corrosion behavior of X80 pipeline steel in simulated alkaline soil solution[J]. Journal of central south University (Science and Technology), 2014,45(9): 2985-2992.

[12] Yuan Hongzhong, Liu Zhiyong, Li Xiaogang, etc. Influence of applied potential on the stress corrosion behavior of X90 pipeline steel and its weld joint in simulated solution of near neutral soil environment[J]. Acta Metallurgica Sinica, 2017, 53(7): 797-807.

DOI: 10.3724/sp.j.1037.2010.00102

[13] Luo Jinheng，Luo Sheji, Li Lifeng, etc. Stress corrosion cracking behavior of X90 pipeline steel and its weld joint at different applied potentials in near-neutral solutions[J]. Natural Gas Industry, 2018, 38(8): 96-102.

DOI: 10.1016/j.ngib.2018.08.002

[14] Jia Yizheng, Li Hui, Hu Nannan, etc. Effect of applied cathode potential on the behavior of near-neutral pH SCC of X100 pipeline steel[J].Journal of SiChuan University (engineering Science Edition), 2013, 45(4): 186-191.

[15] Guo Hao, Li Guangfu, Cai Xun, etc. Stress corrosion cracking behavior of X70 pipeline steel in near-neutral pH solutions at diffenent temperatures[J]. Acta Metallurgica Sinica , 2004, 40(9): 967-971.

[16] Ye Cundong, Kong Dejun, Zhang Lei. Effects of temperature on stress corrosion of X70 pipeline steel in solution with oxygen[J]. Journal of central South University (Science and Technology), 2015, 46(7): 2432-2438.

[17] Zhang Guoliang. Stress Corrosion Cracking of pipeline steels in soil enviroments[D]. ShangHai: Shanghai Institute of Materials, (2007).

[18] Fan Lin, Liu Zhiyong, Du Cuiwei, etc. Relationship between high pH stress corrosion cracking mechanisms and applied potentials [J]. Acta Metallurgica Sinica , 2013, 49(6): 689-698.

DOI: 10.3724/sp.j.1037.2012.00744

[19] Wang Zhiying, Wang Jianqiu, Han Enhou, etc. Effect of mechanical factors on SCC initiation of pipeline steel[J]. Journal of Chinesse society for corrosion and protection, 2008, 28(5): 282-286.

[20] Fu Yang, Wu Ming, Xie Fei, etc. Effect of temperature and applied potential on stress corrosion of X70 pipeline steel in simulated soil solution[J]. Heat treatment of metals, 2015, 40(8): 183-187.

[21] Zhang Liang, Jia Haidong, Yang Yonghe, etc. Stress Corrosion Cracking Influence Factors of High Strength Pipeline Steel in Simulated Near-neutral pH Soil Environment [J]. Welded pipe, 2016, 39(10): 19-23.

[22] Xie Fei. Corrosion behavor of X80 pipeline steel and its welds in soil simulated solution in KURLER [D]. Beijing: China University of Petroleum, (2013).