Effects of Cold-Work Degree on Stress Corrosion Cracking Behavior of Alloy 600 in Simulated Boiling Water Reactor (BWR) Water Environments

CORROSION ◽  
10.5006/3426 ◽  
2020 ◽  
Vol 76 (10) ◽  
pp. 930-940
Author(s):  
Wen-Feng Lu ◽  
Jiunn-Yuan Huang ◽  
Tai-Cheng Chen ◽  
Kun-Chao Tsai
Keyword(s):  
Grain Boundary ◽  
Stress Corrosion ◽  
Crack Growth ◽  
Stress Corrosion Cracking ◽  
Cold Work ◽  
Growth Behavior ◽  
Corrosion Cracking ◽  
Boiling Water ◽  
Alloy 600 ◽  
Cracking Behavior

The growth behavior of stress corrosion cracking (SCC) of Alloy 600 with different cold-work levels was investigated in simulated boiling water reactors water environments. In addition, a correlation of cold-work levels, grain boundary characteristic, and the SCC growth behavior of Alloy 600 were studied. The results show that grains with high residual strain caused by cold work provide transgranular crack growth paths. The SCC growth rates of the specimens also increase with an increase in the degree of cold work and decrease remarkably after switching to the hydrogen water chemistry environment. Grain boundary character proves to be a factor more important than the localized strain concentration at the grain boundary in terms of its role in the intergranular crack growth rate of the Alloy 600 with a cold-work degree from 20% to 30%.

Effect of cold work on stress corrosion cracking behavior of types 304 and 316 stainless steels

1985 ◽  
Vol 16 (2) ◽  
pp. 285-289 ◽  
Author(s):  
P. Muraleedharan ◽  
H. S. Khatak ◽  
J. B. Gnanamoorthy ◽  
P. Rodriguez
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Cold Work ◽  
Corrosion Cracking ◽  
Cracking Behavior

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.

scholarly journals Effect of serrated grain boundary on stress corrosion cracking of Alloy 600

2018 ◽  
Vol 50 (7) ◽  
pp. 1131-1137 ◽  
Author(s):  
H.P. Kim ◽  
M.J. Choi ◽  
S.W. Kim ◽  
D.J. Kim ◽  
Y.S. Lim ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Alloy 600
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