TY - JOUR
T1 - Dependence of crack growth kinetics on dendrite orientation and water chemistry for Alloy 182 weld metal in high-temperature water
AU - Lu, Zhanpeng
AU - Chen, Junjie
AU - Shoji, Tetsuo
AU - Meng, Fanjiang
N1 - Funding Information:
This work has been performed under the support of Grant-in-Aid for Scientific Research (C) 23560078, Japan Society for the Promotion of Science, and the POLIM program. Z.P. Lu acknowledges the support of Shanghai Pujiang Program No. 12PJ1403600 and The Ph.D. Programs Foundation of Ministry of Education of China No.20123108110021. The help from Y. Takeda for the experiments is gratefully appreciated.
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/3
Y1 - 2015/3
N2 - Stress corrosion cracking growth rates of Alloy 182 weld metals in T-S and T-L orientations in 288 °C pure water with various dissolved oxygen and hydrogen concentrations were measured. Extensive inter-dendritic stress corrosion cracking paths on the side surfaces and fracture surfaces were observed. The crack growth path in the T-S orientation specimen was perpendicular to the applied loading direction, and parallel to the loading direction in the T-L specimen. Crack growth rates of the T-S specimen were significantly higher than those of the T-L specimen under the same test conditions. The crack growth rate decreased significantly with decreasing dissolved oxygen concentration. Adding dissolved hydrogen in water caused an apparent decrease of the alternating current potential drop signal during crack growth monitoring.
AB - Stress corrosion cracking growth rates of Alloy 182 weld metals in T-S and T-L orientations in 288 °C pure water with various dissolved oxygen and hydrogen concentrations were measured. Extensive inter-dendritic stress corrosion cracking paths on the side surfaces and fracture surfaces were observed. The crack growth path in the T-S orientation specimen was perpendicular to the applied loading direction, and parallel to the loading direction in the T-L specimen. Crack growth rates of the T-S specimen were significantly higher than those of the T-L specimen under the same test conditions. The crack growth rate decreased significantly with decreasing dissolved oxygen concentration. Adding dissolved hydrogen in water caused an apparent decrease of the alternating current potential drop signal during crack growth monitoring.
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U2 - 10.1016/j.jnucmat.2014.12.083
DO - 10.1016/j.jnucmat.2014.12.083
M3 - Article
AN - SCOPUS:84920733370
VL - 458
SP - 253
EP - 263
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
ER -