Assessment of the sulfide stress corrosion cracking characteristics in the multi-pass weld of the A106 Gr B steel pipe

2009 ◽  
Vol 23 (5) ◽  
pp. 1244-1248 ◽  
Author(s):  
Gyuyoung Lee ◽  
Kwang Jin Park ◽  
Dong Ho Bae
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Steel Pipe ◽  
Sulfide Stress ◽  
Cracking Characteristics ◽  
Sulfide Stress Corrosion Cracking

THE SULFIDE STRESS CORROSION CRACKING CHARACTERISTICS OF THE PIPE WELD IN THE PETROCHEMICAL PLANT

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2447-2452 ◽  
Author(s):  
GYU YOUNG LEE ◽  
DONG HO BAE
Keyword(s):  
Corrosion Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Oil Field ◽  
Welding Residual Stress ◽  
Steel Pipe ◽  
Petrochemical Plant ◽  
Sulfide Stress ◽  
Sulfide Stress Corrosion Cracking

Sulfide stress corrosion cracking (SSCC) in crude oil field environment including hydrogen sulfide ( H 2 S ) has been recognized as a materials failure mechanism. Welding residual stress generation and metallurgical change by fusion welding process increase the cracking driving force and reduce the resistance of brittle fracture as well as environmental fracture. On the base of this understanding, firstly, we analyzed welding residual stresses of welded ASTM A 106 Gr B steel pipe using in the petrochemical plant. And next, SSCC tests were conducted to assess SSCC resistance of the weld with smooth specimens. From the result, influence of temperature on corrosion rate was sensitive in order of HAZ, base metal and weld metal. Therefore, the most sensitive region in the weld is HAZ, and its corrosion rate increases with the temperature of corrosion environment increase. And failure positions of the most cases among failed specimens were at HAZ of the weld. Low limit (σ SSCC ) of A 106 Gr B steel pipe was assessed as 0.6 σ y (7271.6N)

scholarly journals Causes of Structural Heterogeneity in High-Strength OCTG Tubes and Minimizing Their Impact on Sulfide Stress Corrosion Cracking Resistance

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1843
Author(s):  
Artem Davydov ◽  
Andrey Zhitenev ◽  
Alexey Alhimenko ◽  
Natalya Devyaterikova ◽  
Konstantin Laev
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Strength ◽  
Structural Heterogeneity ◽  
Corrosion Cracking ◽  
Corrosion Properties ◽  
Sulfide Stress ◽  
Mechanical And Corrosion Properties ◽  
Quenching And Tempering ◽  
Sulfide Stress Corrosion Cracking

High-strength oil country tubular goods (OCTG) like C110, according to standard API 5CT (yield strength at least 758 MPa), are subject to requirements in terms of mechanical and corrosion properties. In this work, we studied the microstructure of seamless casing tubes made of class C110 high-strength steel with a 194.5 mm diameter and 19.7 mm wall thickness, and its influence on sulfide stress corrosion cracking (SSC). Casing tubes were obtained from continuous billets by screw piercing with preliminary quenching and tempering. It was shown that cracking during the tests always begins from the inner surface of the tube. Rough segregation bands were found on the inner tube surface, which occupies about a third of the thickness of the wall. To increase the resistance of 0.3C-Cr-Mn-Mo + 0.15(V + Nb + Ti) steel to SSC, primary recommendations for adjusting the chemical composition, production technology and heat treatment were developed.

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