Journal ArticleDOI
Mechanisms of High-pH and Near-Neutral-pH SCC of Underground Pipelines
John A. Beavers,Brent A. Harle +1 more
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In this article, the authors provide an overview of mechanisms for high-pH and near-neutral pH stress corrosion cracking of underground pipelines, and provide historical information on both forms of cracking.Abstract:
This paper provides an overview of mechanisms for high-pH and near-neutral-pH stress corrosion cracking of underground pipelines. Characteristics and historical information on both forms of cracking are discussed. This information is then used to support proposed mechanisms for crack initiation and growth.Copyright © 1996 by ASMEread more
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A new understanding of intergranular stress corrosion cracking resistance of pipeline steel through grain boundary character and crystallographic texture studies
Muhammad Arafin,Jerzy A. Szpunar +1 more
TL;DR: In this paper, the role of grain boundary character and crystallographic texture on the intergranular stress corrosion cracking (IGSCC) of API X-65 pipeline steel has been studied using scanning electron microscope (SEM) based electron backscattered diffraction (EBSD) and X-ray texture measurements.
Journal ArticleDOI
Mechanistic aspect of near-neutral pH stress corrosion cracking of pipelines under cathodic polarization
TL;DR: In this article, the authors investigated mechanistically stress corrosion cracking (SCC) of an X70 pipeline steel that is under cathodic protection (CP) in a near-neutral pH solution and found that there is a critical potential range, i.e., −730 and −920 mVSCE, where the steel is in a non-equilibrium electrochemical state, and anodic dissolution (AD) reaction may occur when the steel was polarized cathodically.
Journal ArticleDOI
Effect of bainitic microstructure on the susceptibility of pipeline steels to hydrogen induced cracking
Muhammad Arafin,Jerzy A. Szpunar +1 more
TL;DR: In this article, the authors investigated the HIC susceptibility of API X80 and API X100 pipeline steels in high pH carbonate-bicarbonate environment using slow strain rate testing (SSRT).
Journal ArticleDOI
Local additional potential model for effect of strain rate on SCC of pipeline steel in an acidic soil solution
TL;DR: In this article, a local additional potential model (LAPM) was developed to illustrate the critical role of strain rate in SCC of X70 pipeline steel in an acidic soil solution was investigated by slow strain rate test, surface characterization, potentiodynamic polarization curve measurement and electrochemical hydrogen permeation technique.
Journal ArticleDOI
Effect of plastic deformation on the electrochemical and stress corrosion cracking behavior of X70 steel in near-neutral pH environment
TL;DR: In this article, the effect of plastic deformation on the electrochemical and stress corrosion cracking (SCC) behavior of X70 steel in near-neutral pH environment was investigated, and the deformation-induced increase in electrochemical activity, dislocation density and heterogeneity, and surface roughness accelerated the corrosion, especially the cathodic reactions.
References
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Journal ArticleDOI
Transgranular Stress Corrosion Cracking of High-Pressure Pipelines in Contact with Solutions of Near Neutral pH
TL;DR: Although intergranular stress corrosion cracking (IGSCC) of high-pressure gas pipelines has been known for more than 20 years, a transgranular form (TGSCC) was detected more recently as discussed by the authors.
Journal ArticleDOI
Stress Corrosion Cracking of Carbon Steel in Carbonate Solutions
TL;DR: In this paper, the characteristics of nitrate and hydroxide solutions, known to promote stress corrosion cracking (SCC) in carbon steels, and from the form of potentiodynamic polariz...