Stress corrosion cracking in the heat affected zone of a stainless steel 308L-316L weld joint in primary water

2016 ◽  
Vol 107 ◽  
pp. 172-181 ◽  
Author(s):  
Lijin Dong ◽  
Qunjia Peng ◽  
En-Hou Han ◽  
Wei Ke ◽  
Lei Wang
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Weld Joint ◽  
Heat Affected Zone ◽  
Corrosion Cracking ◽  
Primary Water

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.

Stress Corrosion Cracking of the Fusion Boundary for 304L/82 Dissimilar Metal Weld Joint in Simulated Primary Water

CORROSION ◽  
10.5006/3343 ◽  
2019 ◽  
Vol 76 (2) ◽  
pp. 176-187
Author(s):  
Liang Zhao ◽  
Jiamei Wang ◽  
Haozhan Su ◽  
Donghai Du ◽  
Lefu Zhang ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Heat Affected Zone ◽  
Corrosion Cracking ◽  
Intergranular Cracking ◽  
Fusion Boundary ◽  
Dissimilar Metal ◽  
Primary Water ◽  
Dissimilar Metal Weld ◽  
Metal Weld

The stress corrosion cracking behavior of the fusion boundary for 304L/82 dissimilar metal weld joint was studied in simulated primary water. Analytical electron microscopy was utilized to characterize the cracking features. Results demonstrated that the heat-affected zone in Type 304L has a higher stress corrosion cracking susceptibility and the crack propagated from weld region to Type 304L heat-affected zone in the form of intergranular cracking. The electron back-scattered diffraction and transmission electron microscopy–electron dispersive x-ray spectroscopy results showed that the intergranular cracking in the heat-affected zone of Type 304L was caused by the high residual strain rather than grain boundary Cr-depletion in front of the crack tip. The suppressed crack growth rate in hydrogenated water was attributed to the stable Cr-rich oxide formed at crack tip.

Evaluation of stress corrosion cracking susceptibility of forged 316 stainless steel in simulated primary water

2017 ◽  
Vol 69 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Ruolin Zhu ◽  
Jianqiu Wang ◽  
Hongliang Ming ◽  
Zhiming Zhang ◽  
En-Hou Han
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
316 Stainless Steel ◽  
Primary Water
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