Influence of Load Line Displacement on Stress Corrosion Crack Growth Behavior of AISI 422 Stainless Steel in NaCl Solution

CORROSION ◽  
1988 ◽  
Vol 44 (10) ◽  
pp. 755-760 ◽  
Author(s):  
N. S. Cheruvu
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Crack Growth ◽  
Growth Behavior ◽  
Crack Growth Behavior ◽  
Nacl Solution ◽  
Load Line ◽  
Load Line Displacement ◽  
Stress Corrosion Crack Growth

Stress Corrosion Crack Growth Behavior of Type 310S Stainless Steel in Supercritical Water

CORROSION ◽  
10.5006/2775 ◽  
2018 ◽  
Vol 74 (7) ◽  
pp. 776-787 ◽  
Author(s):  
Kai Chen ◽  
Jiamei Wang ◽  
Donghai Du ◽  
Xianglong Guo ◽  
Lefu Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Crack Growth ◽  
Supercritical Water ◽  
Corrosion Potential ◽  
Growth Behavior ◽  
Crack Growth Behavior ◽  
Crack Growth Rates ◽  
Dissolved O2

Stress corrosion crack (SCC) behavior of Type 310S stainless steel (SS) in supercritical water was evaluated at 400°C to 550°C. Crack growth rates (CGR) were obtained as a function of temperature and corrosion potential. Results show that Type 310S SS exhibits 100% intergranular SCC, and creep plays an important role in the overall growth rate. The SCC CGR increases with temperature between 400°C and 550°C, and is higher at a medium-low corrosion potential (argon deaerated water) than in water with dissolved O2 or dissolved H2. A mechanism for SCC of Type 310S SS in supercritical water is proposed to explain the combined effect of SCC and creep.

Continuity of Environmentally Assisted Fatigue and Stress Corrosion Cracking Based on Short Crack Growth Behavior of 316 Stainless Steel in Simulated PWR Primary Water

2017 ◽  
Author(s):  
Choongmoo Shim ◽  
Yoichi Takeda ◽  
Tetsuo Shoji
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Crack Growth ◽  
Stress Corrosion Cracking ◽  
Water Environment ◽  
Growth Behavior ◽  
Corrosion Cracking ◽  
Short Crack ◽  
Crack Growth Behavior ◽  
Primary Water

Environmental correction factor (Fen) is one of the parameters to evaluate the effect of a pressurized high temperature water environment. It has been reported that Fen for stainless steel saturates at a very low strain rate. However, the relationship between environmentally assisted fatigue (EAF) and stress corrosion cracking (SCC) is still unclear. The aim of this study is to investigate the short crack growth behavior and possible continuity of EAF and SCC at very low strain rates. Short crack initiation and propagation have similar behaviors, which retard the crack growth between 100–200 μm in depth. We find that the striation spacing correlates well with the maximum crack growth rate (CGR) data. Based on the correlation, it is clarified that the local CGR on an intergranular facet was faster than that on a transgranular facet. Furthermore, the overall maximum and average CGR from the EAF data is well interpreted and compared with the SCC data.

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