TY - JOUR
T1 - Synergistic effects of local strain-hardening and dissolved oxygen on stress corrosion cracking of 316NG weld heat-affected zones in simulated BWR environments
AU - Lu, Zhanpeng
AU - Shoji, Tetsuo
AU - Xue, He
AU - Meng, Fanjiang
AU - Fu, Chaoyang
AU - Takeda, Yoichi
AU - Negishi, Koji
N1 - Funding Information:
This work has been performed as a part of the PEACE-E program jointly supported by EDF, EPRI, SSM, TEPCO, KEPCO, TohokuEPCO, ChubuEPCO, JAPCO, HITACHI Ltd., MHI, TOSHIBA Co., and IHI. This work has been also performed under the supports of Grant-in-Aid for Scientific Research (S) 17106002, (C) 20560063 and (C) 23560078, Japan Society for the Promotion of Science, and the support of the International Cooperative Program for Education and Research, the Japanese Ministry of Education, Culture, Sports, Science and Technology. Part of this work was performed as a part of the contracted work on Enhancement of Ageing Management and Maintenance of Nuclear Power Plants by Nuclear and Industrial Safety Agency (NISA) in the Ministry of Economy, Trade and Industry (METI) of Japan.
PY - 2012/4
Y1 - 2012/4
N2 - Stress corrosion cracking growth during long-term test in high temperature water was monitored in two 316NG weld heat-affected zones representing highly hardened and medially hardened regions. Cracking near the weld fusion line exhibited both macroscopic bifurcation and extensive microscopic branching, which was faster than that in the medially hardened region where crack kinking was observed. There is an interaction between material hardening and dissolved oxygen on crack growth. The effect of a single overloading on crack growth in 316NG heat-affected zones is less significant than that in a cold worked 316NG stainless steel.
AB - Stress corrosion cracking growth during long-term test in high temperature water was monitored in two 316NG weld heat-affected zones representing highly hardened and medially hardened regions. Cracking near the weld fusion line exhibited both macroscopic bifurcation and extensive microscopic branching, which was faster than that in the medially hardened region where crack kinking was observed. There is an interaction between material hardening and dissolved oxygen on crack growth. The effect of a single overloading on crack growth in 316NG heat-affected zones is less significant than that in a cold worked 316NG stainless steel.
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U2 - 10.1016/j.jnucmat.2011.12.030
DO - 10.1016/j.jnucmat.2011.12.030
M3 - Article
AN - SCOPUS:84856592114
SN - 0022-3115
VL - 423
SP - 28
EP - 39
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -