Effect of Strain Hardened Inner Surface Layers on Stress Corrosion Cracking of Type 316 Stainless Steel in Simulated PWR Primary Water

2019 ◽  
Vol 50 (5) ◽  
pp. 2462-2485 ◽  
Author(s):  
Toshio Yonezawa ◽  
Masashi Watanabe ◽  
Atsushi Hashimoto ◽  
M. D. Olson ◽  
A. T. DeWald ◽  
...  
2017 ◽  
Vol 69 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Ruolin Zhu ◽  
Jianqiu Wang ◽  
Hongliang Ming ◽  
Zhiming Zhang ◽  
En-Hou Han

Author(s):  
Choongmoo Shim ◽  
Yoichi Takeda ◽  
Tetsuo Shoji

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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