TY - JOUR
T1 - Modeling and quantitative prediction of environmentally assisted cracking based upon a deformation-oxidation mechanism
AU - Shoji, Tetsuo
AU - Wang, Shengchun
AU - Lu, Zhanpeng
AU - Takeda, Yoichi
AU - Peng, Qunjia
AU - Kai, Akira
PY - 2004/11/17
Y1 - 2004/11/17
N2 - In order to provide a quantitative tool for predicting EAC growth rates for austenitic alloys such as austenitic stainless steels, Alloys 600 and 182 in simulated LWR environments, a model based upon the synergistic effects of deformation and oxidation at the crack tip has been proposed. In this paper, the effects of hardening, variation of K with crack growth and oxidation kinetics on EAC growth rate are described with special emphasis on field applications. The results imply recent cracking incidences in BWR core shroud and Primary Loop Recirculation (PLR) piping and PWR Vessel Penetrations (VP). In particular, the significance of oxide analysis at the crack tip and also of a kinetic approach to oxidation under stress or strain condition is described. Potential future directions for mitigation of such cracking are discussed.
AB - In order to provide a quantitative tool for predicting EAC growth rates for austenitic alloys such as austenitic stainless steels, Alloys 600 and 182 in simulated LWR environments, a model based upon the synergistic effects of deformation and oxidation at the crack tip has been proposed. In this paper, the effects of hardening, variation of K with crack growth and oxidation kinetics on EAC growth rate are described with special emphasis on field applications. The results imply recent cracking incidences in BWR core shroud and Primary Loop Recirculation (PLR) piping and PWR Vessel Penetrations (VP). In particular, the significance of oxide analysis at the crack tip and also of a kinetic approach to oxidation under stress or strain condition is described. Potential future directions for mitigation of such cracking are discussed.
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U2 - 10.1115/PVP2004-2662
DO - 10.1115/PVP2004-2662
M3 - Conference article
AN - SCOPUS:7744241704
SN - 0277-027X
VL - 479
SP - 175
EP - 184
JO - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
JF - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
T2 - 2004 ASME/JSME Pressure Vessels and Piping Conference
Y2 - 25 July 2004 through 29 July 2004
ER -