Effect of pH value on the crack growth behavior of X70 pipeline steel in the dilute bicarbonate solutions

Zhongyu Cui; Zhiyong Liu; Liwei Wang; Cuiwei Du; Xiaogang Li

doi:10.2320/matertrans.M2015096

Effect of pH value on the crack growth behavior of X70 pipeline steel in the dilute bicarbonate solutions

Zhongyu Cui
, Zhiyong Liu^*
, Liwei Wang
, Cuiwei Du
, Xiaogang Li

^*此作品的通讯作者

可靠性与系统工程学院

University of Science and Technology Beijing
China National Petroleum Corporation

科研成果: 期刊稿件 › 文章 › 同行评审

9 引用（Scopus）

摘要

In this work, the crack growth behavior of X70 pipeline steel in the near-neutral pH and acidic solutions was investigated using in-situ crack length measurement, microscopic observation and polarization curves. The results showed that the decrease of the solution pH promoted the anodic and cathodic reactions simultaneously and accelerate the corrosion rate of X70 steel. This resulted in the blunt crack tip of X70 steel in the acidic environment. The crack growth rate of X70 steel in the acidic solution was lower than that in the near-neutral pH environment, which was attributed to the higher corrosion rate and the weaker couple effect around the crack tip.

源语言	英语
页（从-至）	777-780
页数	4
期刊	Materials Transactions
卷	56
期	6
DOI	https://doi.org/10.2320/matertrans.M2015096
出版状态	已出版 - 2015

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title = "Effect of pH value on the crack growth behavior of X70 pipeline steel in the dilute bicarbonate solutions",

abstract = "In this work, the crack growth behavior of X70 pipeline steel in the near-neutral pH and acidic solutions was investigated using in-situ crack length measurement, microscopic observation and polarization curves. The results showed that the decrease of the solution pH promoted the anodic and cathodic reactions simultaneously and accelerate the corrosion rate of X70 steel. This resulted in the blunt crack tip of X70 steel in the acidic environment. The crack growth rate of X70 steel in the acidic solution was lower than that in the near-neutral pH environment, which was attributed to the higher corrosion rate and the weaker couple effect around the crack tip.",

keywords = "Crack growth rate, Crack tip, PH, X70 pipeline steel",

author = "Zhongyu Cui and Zhiyong Liu and Liwei Wang and Cuiwei Du and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2015 The Japan Institute of Metals and Materials.",

year = "2015",

doi = "10.2320/matertrans.M2015096",

language = "英语",

volume = "56",

pages = "777--780",

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TY - JOUR

T1 - Effect of pH value on the crack growth behavior of X70 pipeline steel in the dilute bicarbonate solutions

AU - Cui, Zhongyu

AU - Liu, Zhiyong

AU - Wang, Liwei

AU - Du, Cuiwei

AU - Li, Xiaogang

PY - 2015

Y1 - 2015

N2 - In this work, the crack growth behavior of X70 pipeline steel in the near-neutral pH and acidic solutions was investigated using in-situ crack length measurement, microscopic observation and polarization curves. The results showed that the decrease of the solution pH promoted the anodic and cathodic reactions simultaneously and accelerate the corrosion rate of X70 steel. This resulted in the blunt crack tip of X70 steel in the acidic environment. The crack growth rate of X70 steel in the acidic solution was lower than that in the near-neutral pH environment, which was attributed to the higher corrosion rate and the weaker couple effect around the crack tip.

AB - In this work, the crack growth behavior of X70 pipeline steel in the near-neutral pH and acidic solutions was investigated using in-situ crack length measurement, microscopic observation and polarization curves. The results showed that the decrease of the solution pH promoted the anodic and cathodic reactions simultaneously and accelerate the corrosion rate of X70 steel. This resulted in the blunt crack tip of X70 steel in the acidic environment. The crack growth rate of X70 steel in the acidic solution was lower than that in the near-neutral pH environment, which was attributed to the higher corrosion rate and the weaker couple effect around the crack tip.

KW - Crack growth rate

KW - Crack tip

KW - PH

KW - X70 pipeline steel

UR - https://www.scopus.com/pages/publications/84929933670

U2 - 10.2320/matertrans.M2015096

DO - 10.2320/matertrans.M2015096

M3 - 文章

AN - SCOPUS:84929933670

SN - 1345-9678

VL - 56

SP - 777

EP - 780

JO - Materials Transactions

JF - Materials Transactions

IS - 6

ER -

Effect of pH value on the crack growth behavior of X70 pipeline steel in the dilute bicarbonate solutions

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