Transgranular Stress Corrosion Cracking of X-80 and X-52 Pipeline Steels in Dilute Aqueous Solution with Near-Neutral pH

CORROSION ◽  
1999 ◽  
Vol 55 (3) ◽  
pp. 312-318 ◽  
Author(s):  
B. Gu ◽  
W. Z. Yu ◽  
J. L. Luo ◽  
X. Mao
Keyword(s):  
Aqueous Solution ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Pipeline Steels ◽  
Neutral Ph ◽  
Dilute Aqueous Solution

Hydrogen Facilitated Anodic Dissolution Type Stress Corrosion Cracking of Pipeline Steels in Coating Disbondment Chemistry

1998 ◽  
Author(s):  
Scott X. Mao ◽  
J. L. Luo ◽  
B. Gu ◽  
W. Yu
Keyword(s):  
Stress Corrosion ◽  
Anodic Dissolution ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Strain Rates ◽  
Pipeline Steels ◽  
Dilute Aqueous Solution ◽  
Sims Analysis ◽  
Cracking Process ◽  
Secondary Ion

The stress corrosion cracking (SCC) of pipeline steels in coating disbondment chemistry (near neutral pH solution) was studied by using slow strain rate tests (SSRT), polarization techniques, SEM and SIMS (secondary ion mass spectroscope). It was found that SCC susceptibility increased as the applied electrochemical potential and strain rates decreased. Hydrogen (H) precharging or addition of CO2 facilitated the process of SCC, suggesting that dissolution and hydrogen ingress are involved in the cracking process. SIMS analysis showed that hydrogen could diffuse into steels around the crack tip during the SCC process, which would facilitate the dissolution rate of the steel and increase SCC susceptibility. A mechanism was proposed which shows that hydrogen enhances anodic dissolution type of SCC in dilute aqueous solution. A thermodynamic analysis of the SCC process was carried out, and was found to be consistent with the experimental results.

Hydrogen in stress corrosion cracking of X-70 pipeline steels in near-neutral pH solutions

2006 ◽  
Vol 41 (6) ◽  
pp. 1797-1803 ◽  
Author(s):  
Bingyan Fang ◽  
En-Hou Han ◽  
Jianqiu Wang ◽  
Ziyong Zhu ◽  
We Ke
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Pipeline Steels ◽  
Neutral Ph

Stress corrosion cracking of X-70 pipeline steels by eletropulsing treatment in near-neutral pH solution

2005 ◽  
Vol 40 (24) ◽  
pp. 6545-6552 ◽  
Author(s):  
Bingyan Fang ◽  
Jianqiu Wang ◽  
Suhong Xiao ◽  
En-Hou Han ◽  
Ziyong Zhu ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Pipeline Steels ◽  
Neutral Ph

Precyclic-Loading-Induced Stress Corrosion Cracking of Pipeline Steels in a Near-Neutral-pH Soil Environment

CORROSION ◽  
2002 ◽  
Vol 58 (6) ◽  
pp. 526-534 ◽  
Author(s):  
S-H. Wang ◽  
W. Chen ◽  
F. King ◽  
T. R. Jack ◽  
R. R. Fessler
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Soil Environment ◽  
Pipeline Steels ◽  
Neutral Ph ◽  
Induced Stress
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