Volume 6, Issue 4, August 2017, Page: 45-51
Effect of Localized Coating Damage on Stress Corrosion Cracking Resistance of API 5L Grade B Steel
Pejman Malekinejad, Department of Materials Science and Engineering, Kerman Graduate University of Technology, Kerman, Iran
Received: Jul. 28, 2017;       Accepted: Aug. 10, 2017;       Published: Aug. 28, 2017
DOI: 10.11648/j.am.20170604.13      View  2479      Downloads  144
In this research slow strain rate testing (SSRT), scanning electron microscopy (SEM), hardness measurement, metallography and optical microscopy were used to investigate the effect of localized coating damage on stress corrosion cracking (SCC) resistance of API 5L Grade B steel. According to the results, by increasing the damaged coating surface area, resistance to SCC increased. This phenomenon had 2 reasons. Firstly, by reduction of damaged surface area of coating, the ratio of anode surface to cathode surface reduced and consequently the corrosion reduced. Other reason was reduction in toughness by reducing the area of damaged surface of coating which resulted in failure at lower stresses.
To cite this article
Pejman Malekinejad, Effect of Localized Coating Damage on Stress Corrosion Cracking Resistance of API 5L Grade B Steel, Advances in Materials. Vol. 6, No. 4, 2017, pp. 45-51. doi: 10.11648/j.am.20170604.13
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
M. Alizadeh, S. Bordbar, The influence of microstructure on the protective properties of the corrosion product layer generated on the welded API X70 steel in chloride solution, Corrosion Science, 70 (2013) 170-179.
Ziqing Zhai, Mychailo B. Toloczko, Matthew J. Olszta, Stephen M. Bruemmer, Stress corrosion crack initiation of alloy 600 in PWR primary water, Corrosion Science, 123 (2017) 76-87.
E. Sadeghi Meresht, T. Shahrabi Farahani, J. Neshati, Failure analysis of stress corrosion cracking occurred in a gas transmission steel pipeline, Engineering Failure Analysis, 18 (2011) 963-970.
Z. Y. Liu, Q. Li, Z. Y. Cui, W. Wu, Z. Li, C. W. Du, X. G. Li, Field experiment of stress corrosion cracking behavior of high strength pipeline steels in typical soil environments, 148 (2017) 131-139.
A. Contreras, S. L. Hernández, R. Orozco-Cruz, R. Galvan-Martínez, Mechanical and environmental effects on stress corrosion cracking of low carbon pipeline steel in a soil solution, Materials & Design, 35 (2012) 281-289.
Z. A. Majid, R. Mohsin, Multiple failures of API 5L X42 natural gas pipeline, Engineering Failure Analysis, 31 (2013) 421-429.
J. G. Erlings, J. G. De Groot, J. Nauta, The effect of slow plastic and elastic straining on sulphide stress cracking and hydrogen embrittlement of 3.5% Ni steel and API 5L X60 pipeline steel, Corrosion Science, 27 (1983) 1153-1167.
A. W. Peabody, Control of Pipeline Corrosion, NACE International, United States of America, 2001.
Fabienne Delaunois, Alexis Tshimombo, Victor Stanciu, Veronnique Vitray, Monitoring of chloride stress corrosion cracking of austenitic stainless steel: identification of the phases of the corrosion process and use of a modified accelerated test, Corrosion Science, 110 (2016) 273-283.
ASTM E08 standard, Standard test methods for tension testing of metallic materials, ASTM International, 2006.
ASTM G 129, Standard practice for slow strain rate testing to evaluate the susceptibility of metallic materials to environmentally assisted cracking, ASTM International, 2006.
API 5 L Standard, Specification for line pipe, American Petroleum Institute 2004.
ASTM E 407 Standard, Standard practice for microetching metals and alloys, ASTM International, 2006.
S. Di Liberto, G. Gabetta, Stress corrosion cracking by anodic dissolution and hydrogen permeation in pipeline steels, Materials Science, 33 (1997) 411-420.
M. C. Li, Y. F. Chenga, Mechanistic investigation of hydrogen-enhanced anodic dissolution of X-70 pipe steel and its implication on near-neutral pH SCC of pipelines, Electrochemica Acta, 52 (2007) 8111-8117.
F. F. Eliyan, E. S. Mahdi, A. Alfantazi, Electrochemical evaluation of corrosion behavior of API 5L-X100 pipeline steel in aerated bicarbonate solution, Corrosion Science, 58 (2012) 181-191.
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