Stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in an acidic soil solution

Chao Liu; Zongshu Li; Bo Zhao; Zhiyong Liu; Cuiwei Du; Xiaogang Li

doi:10.1016/j.jmrt.2021.06.092

Stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in an acidic soil solution

Chao Liu
, Zongshu Li
, Bo Zhao
, Zhiyong Liu^*
, Cuiwei Du
, Xiaogang Li^*

^*Corresponding author for this work

University of Science and Technology Beijing
China Special Equipment Inspection and Research Institute

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

20 Scopus citations

Abstract

The stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in a simulated acidic soil solution was investigated by a disbonded coating simulation device. According to the ex situ slow strain rate tension (SSRT) tests and potentiodynamic polarization measurement results, the environmentally assisted cracking (EAC) process was controlled by both anodic dissolution (AD) and hydrogen embrittlement (HE), and the range of critical potential values for different EAC mechanisms were also confirmed. Due to the accumulation of H⁺ and Cl⁻ at the bottom of the crevice under the disbonded coating, the X80 steel exhibited the highest EAC susceptibility. A low strain rate provides sufficient action time and allows the adequate diffusion of hydrogen atoms on the steel surface, thereby resulting in an increase in the EAC susceptibility of X80 steel.

Original language	English
Pages (from-to)	533-547
Number of pages	15
Journal	Journal of Materials Research and Technology
Volume	14
DOIs	https://doi.org/10.1016/j.jmrt.2021.06.092
State	Published - 1 Sep 2021
Externally published	Yes

Keywords

Acid solutions
Low-alloy steel
Stress corrosion
Stress corrosion susceptibility

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10.1016/j.jmrt.2021.06.092

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title = "Stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in an acidic soil solution",

abstract = "The stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in a simulated acidic soil solution was investigated by a disbonded coating simulation device. According to the ex situ slow strain rate tension (SSRT) tests and potentiodynamic polarization measurement results, the environmentally assisted cracking (EAC) process was controlled by both anodic dissolution (AD) and hydrogen embrittlement (HE), and the range of critical potential values for different EAC mechanisms were also confirmed. Due to the accumulation of H+ and Cl− at the bottom of the crevice under the disbonded coating, the X80 steel exhibited the highest EAC susceptibility. A low strain rate provides sufficient action time and allows the adequate diffusion of hydrogen atoms on the steel surface, thereby resulting in an increase in the EAC susceptibility of X80 steel.",

keywords = "Acid solutions, Low-alloy steel, Stress corrosion, Stress corrosion susceptibility",

author = "Chao Liu and Zongshu Li and Bo Zhao and Zhiyong Liu and Cuiwei Du and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2021",

month = sep,

day = "1",

doi = "10.1016/j.jmrt.2021.06.092",

language = "英语",

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TY - JOUR

T1 - Stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in an acidic soil solution

AU - Liu, Chao

AU - Li, Zongshu

AU - Zhao, Bo

AU - Liu, Zhiyong

AU - Du, Cuiwei

AU - Li, Xiaogang

PY - 2021/9/1

Y1 - 2021/9/1

N2 - The stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in a simulated acidic soil solution was investigated by a disbonded coating simulation device. According to the ex situ slow strain rate tension (SSRT) tests and potentiodynamic polarization measurement results, the environmentally assisted cracking (EAC) process was controlled by both anodic dissolution (AD) and hydrogen embrittlement (HE), and the range of critical potential values for different EAC mechanisms were also confirmed. Due to the accumulation of H+ and Cl− at the bottom of the crevice under the disbonded coating, the X80 steel exhibited the highest EAC susceptibility. A low strain rate provides sufficient action time and allows the adequate diffusion of hydrogen atoms on the steel surface, thereby resulting in an increase in the EAC susceptibility of X80 steel.

AB - The stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in a simulated acidic soil solution was investigated by a disbonded coating simulation device. According to the ex situ slow strain rate tension (SSRT) tests and potentiodynamic polarization measurement results, the environmentally assisted cracking (EAC) process was controlled by both anodic dissolution (AD) and hydrogen embrittlement (HE), and the range of critical potential values for different EAC mechanisms were also confirmed. Due to the accumulation of H+ and Cl− at the bottom of the crevice under the disbonded coating, the X80 steel exhibited the highest EAC susceptibility. A low strain rate provides sufficient action time and allows the adequate diffusion of hydrogen atoms on the steel surface, thereby resulting in an increase in the EAC susceptibility of X80 steel.

KW - Acid solutions

KW - Low-alloy steel

KW - Stress corrosion

KW - Stress corrosion susceptibility

UR - https://www.scopus.com/pages/publications/85109478585

U2 - 10.1016/j.jmrt.2021.06.092

DO - 10.1016/j.jmrt.2021.06.092

M3 - 文章

AN - SCOPUS:85109478585

SN - 2238-7854

VL - 14

SP - 533

EP - 547

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Stress corrosion mechanism and susceptibility of X80 steel under a disbonded coating in an acidic soil solution

Abstract

Keywords

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