Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions

Z. Y. Cui; Z. Y. Liu; L. W. Wang; H. C. Ma; C. W. Du; X. G. Li; X. Wang

doi:10.1007/s11665-015-1697-5

Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions

Z. Y. Cui
, Z. Y. Liu^*
, L. W. Wang
, H. C. Ma
, C. W. Du
, X. G. Li
, X. Wang

^*Corresponding author for this work

University of Science and Technology Beijing
Ocean University of China
China National Petroleum Corporation

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

In this work, effects of pH value on the electrochemical and stress corrosion cracking (SCC) behavior of X70 pipeline steel in the dilute bicarbonate solutions were investigated using electrochemical measurements, slow strain rate tensile tests and surface analysis techniques. Decrease of the solution pH from 6.8 to 6.0 promotes the anodic dissolution and cathodic reduction simultaneously. Further decrease of the pH value mainly accelerates the cathodic reduction of X70 pipeline steel. As a result, when the solution pH decreases form 6.8 to 5.5, SCC susceptibility decreases because of the enhancement of the anodic dissolution. When the solution pH decreases from 5.5 to 4.0, SCC susceptibility increases gradually because of the acceleration of cathodic reactions.

Original language	English
Pages (from-to)	4400-4408
Number of pages	9
Journal	Journal of Materials Engineering and Performance
Volume	24
Issue number	11
DOIs	https://doi.org/10.1007/s11665-015-1697-5
State	Published - 1 Nov 2015
Externally published	Yes

Keywords

X70 pipeline steel
electrochemical
pH
stress corrosion cracking

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10.1007/s11665-015-1697-5

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title = "Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions",

abstract = "In this work, effects of pH value on the electrochemical and stress corrosion cracking (SCC) behavior of X70 pipeline steel in the dilute bicarbonate solutions were investigated using electrochemical measurements, slow strain rate tensile tests and surface analysis techniques. Decrease of the solution pH from 6.8 to 6.0 promotes the anodic dissolution and cathodic reduction simultaneously. Further decrease of the pH value mainly accelerates the cathodic reduction of X70 pipeline steel. As a result, when the solution pH decreases form 6.8 to 5.5, SCC susceptibility decreases because of the enhancement of the anodic dissolution. When the solution pH decreases from 5.5 to 4.0, SCC susceptibility increases gradually because of the acceleration of cathodic reactions.",

keywords = "X70 pipeline steel, electrochemical, pH, stress corrosion cracking",

author = "Cui, \{Z. Y.\} and Liu, \{Z. Y.\} and Wang, \{L. W.\} and Ma, \{H. C.\} and Du, \{C. W.\} and Li, \{X. G.\} and X. Wang",

note = "Publisher Copyright: {\textcopyright} 2015, ASM International.",

year = "2015",

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day = "1",

doi = "10.1007/s11665-015-1697-5",

language = "英语",

volume = "24",

pages = "4400--4408",

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}

TY - JOUR

T1 - Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions

AU - Cui, Z. Y.

AU - Liu, Z. Y.

AU - Wang, L. W.

AU - Ma, H. C.

AU - Du, C. W.

AU - Li, X. G.

AU - Wang, X.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - In this work, effects of pH value on the electrochemical and stress corrosion cracking (SCC) behavior of X70 pipeline steel in the dilute bicarbonate solutions were investigated using electrochemical measurements, slow strain rate tensile tests and surface analysis techniques. Decrease of the solution pH from 6.8 to 6.0 promotes the anodic dissolution and cathodic reduction simultaneously. Further decrease of the pH value mainly accelerates the cathodic reduction of X70 pipeline steel. As a result, when the solution pH decreases form 6.8 to 5.5, SCC susceptibility decreases because of the enhancement of the anodic dissolution. When the solution pH decreases from 5.5 to 4.0, SCC susceptibility increases gradually because of the acceleration of cathodic reactions.

AB - In this work, effects of pH value on the electrochemical and stress corrosion cracking (SCC) behavior of X70 pipeline steel in the dilute bicarbonate solutions were investigated using electrochemical measurements, slow strain rate tensile tests and surface analysis techniques. Decrease of the solution pH from 6.8 to 6.0 promotes the anodic dissolution and cathodic reduction simultaneously. Further decrease of the pH value mainly accelerates the cathodic reduction of X70 pipeline steel. As a result, when the solution pH decreases form 6.8 to 5.5, SCC susceptibility decreases because of the enhancement of the anodic dissolution. When the solution pH decreases from 5.5 to 4.0, SCC susceptibility increases gradually because of the acceleration of cathodic reactions.

KW - X70 pipeline steel

KW - electrochemical

KW - pH

KW - stress corrosion cracking

UR - https://www.scopus.com/pages/publications/84946496025

U2 - 10.1007/s11665-015-1697-5

DO - 10.1007/s11665-015-1697-5

M3 - 文章

AN - SCOPUS:84946496025

SN - 1059-9495

VL - 24

SP - 4400

EP - 4408

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 11

ER -

Effect of pH Value on the Electrochemical and Stress Corrosion Cracking Behavior of X70 Pipeline Steel in the Dilute Bicarbonate Solutions

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Keywords

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