TY - GEN
T1 - Continuity of environmentally assisted fatigue and stress corrosion cracking based on short crack growth behavior of 316 stainless steel in simulated pwr primary water
AU - Shim, Choongmoo
AU - Takeda, Yoichi
AU - Shoji, Tetsuo
N1 - Funding Information:
We thank D. Ahrenholz and E. Williams for reviewing the manuscript in draft and S. Cadrin for suggesting the need to incorporate uncertainty in the limit reference point. The work was improved by comments of R. Dorazio and two anonymous reviewers. Computer routine NPROB (Adams 1969) was used to compute approximate tail probabilities of the normal distribution; we obtained it from the Statlib software library at Carnegie– Mellon University, and we thank those at Carnegie–Mellon who maintain that valuable resource. Our work was supported by the National Marine Fisheries Service through its Southeast Fisheries Science Center (SEFSC). Kyle Shertzer received SEFSC support through a National Research Council research associateship.
Publisher Copyright:
© Copyright 2017 ASME.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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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U2 - 10.1115/PVP2017-65711
DO - 10.1115/PVP2017-65711
M3 - Conference contribution
AN - SCOPUS:85034104430
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - Design and Analysis
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2017 Pressure Vessels and Piping Conference, PVP 2017
Y2 - 16 July 2017 through 20 July 2017
ER -