TY - GEN
T1 - Effects of loading mode and water chemistry on stress corrosion cracking of 316L stainless steel in simulated PWR environments
AU - Lu, Zhanpeng
AU - Shoji, Tetsuo
AU - Yamazaki, Seiya
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Stress corrosion cracking (SCC) growth rates of 316L stainless steel cold-worked by one-dimensional (1D) rolling and quasi-three dimensional (3D) rolling are measured in simulated PWR primary water environments. In a simulated PWR primary water with a dissolved hydrogen (DH) concentration of 30cc STP H2/kg H2O, 1-D rolled 316L SS shows extensive intergranular SCC, while 3-D rolled 316L SS shows local SCC. A significantly higher growth rate was observed in a 1-D rolled 316L SS than those in 3-D rolled 316L SSs at similar yield strength levels. Crack growth is controlled by thermally activation processes in the temperature range of 290-320°C. Lowering the dissolved hydrogen concentration from 30cc to 0cc STP H 2/kg H2O significantly increases CGR (by about 10 times). The enhancement factor on crack growth by unloading/reloading procedure during trapezoidal loading increases with shortening the holding time.
AB - Stress corrosion cracking (SCC) growth rates of 316L stainless steel cold-worked by one-dimensional (1D) rolling and quasi-three dimensional (3D) rolling are measured in simulated PWR primary water environments. In a simulated PWR primary water with a dissolved hydrogen (DH) concentration of 30cc STP H2/kg H2O, 1-D rolled 316L SS shows extensive intergranular SCC, while 3-D rolled 316L SS shows local SCC. A significantly higher growth rate was observed in a 1-D rolled 316L SS than those in 3-D rolled 316L SSs at similar yield strength levels. Crack growth is controlled by thermally activation processes in the temperature range of 290-320°C. Lowering the dissolved hydrogen concentration from 30cc to 0cc STP H 2/kg H2O significantly increases CGR (by about 10 times). The enhancement factor on crack growth by unloading/reloading procedure during trapezoidal loading increases with shortening the holding time.
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M3 - Conference contribution
AN - SCOPUS:78649371159
SN - 9781617388538
T3 - 14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
SP - 207
EP - 219
BT - 14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
T2 - 14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
Y2 - 23 August 2009 through 27 August 2009
ER -