Stress Corrosion Cracking of X80 Pipeline Steel Under Various Alternating Current Frequencies in High-pH Carbonate/Bicarbonate Solution

CORROSION ◽  
10.5006/1232 ◽  
2014 ◽  
Vol 70 (12) ◽  
pp. 1181-1188 ◽  
Author(s):  
M. Zhu ◽  
C.W. Du ◽  
X.G. Li ◽  
Z.Y. Liu
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Pipeline Steel ◽  
Alternating Current ◽  
Corrosion Cracking ◽  
X80 Pipeline Steel ◽  
High Ph

External Stress Corrosion Cracking Risk Factors of High Grade Pipeline Steel

2020 ◽  
Vol 993 ◽  
pp. 1270-1276
Author(s):  
Li Xia Zhu ◽  
Jin Heng Luo ◽  
Gang Wu ◽  
Li Feng Li ◽  
Lei Li ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Pipeline Steel ◽  
Steel Grade ◽  
Corrosion Cracking ◽  
High Grade ◽  
Soil Environment ◽  
Applied Potential ◽  
X80 Pipeline Steel ◽  
High Ph

The influence weights of various sensitive factors, such as steel grade, applied potential, temperature and soil environment, on stress corrosion cracking behavior of high-grade pipeline steel were studied by means of orthogonal test at mixed level and slow strain rate test. The stress corrosion behavior of X80 pipeline steel in near neutral and high pH simulated soil solution under overprotection potential was observed by SEM. The results showed that the applied potential has the greatest weight on stress corrosion index of ISSRT, followed by temperature, steel grade and soil environment. X80 pipeline steel exhibits high stress corrosion sensitivity in near-neutral and high pH simulated soil solutions at applied potential of -1500mV, and its SCC mechanism is hydrogen embrittlement (HE). This study can provide guidance for practical engineering application of pipeline steel.

scholarly journals Influence of the ultrasonic surface rolling process on stress corrosion cracking susceptibility of high strength pipeline steel in neutral pH environment

RSC Advances ◽  
2017 ◽  
Vol 7 (59) ◽  
pp. 36876-36885 ◽  
Author(s):  
Bingying Wang ◽  
Yu Yin ◽  
Zhiwei Gao ◽  
Zhenbo Hou ◽  
Wenchun Jiang
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Pipeline Steel ◽  
High Strength ◽  
Rolling Process ◽  
Corrosion Cracking ◽  
X80 Pipeline Steel ◽  
Enhancement Technique ◽  
Neutral Ph ◽  
Developed Surface

A developed surface enhancement technique, USRP, was applied on X80 pipeline steel and the stress corrosion cracking susceptibility was studied.

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