TY - JOUR
T1 - Welding residual stress distributions for dissimilar metal nozzle butt welds in pressurized water reactors
AU - Kim, Ji Soo
AU - Kim, Ju Hee
AU - Bae, Hong Yeol
AU - Oh, Chang Young
AU - Kim, Yun Jae
AU - Lee, Kyung Soo
AU - Song, Tae Kwang
PY - 2012/2
Y1 - 2012/2
N2 - In pressurized water nuclear reactors, dissimilar metal welds are susceptible to primary water stress corrosion cracking. To access this problem, accurate estimation of welding residual stresses is important. This paper provides general welding residual stress profiles in dissimilar metal nozzle butt welds using finite element analysis. By introducing a simplified shape for dissimilar metal nozzle butt welds, changes in the welding residual stress distribution can be seen using a geometry variable. Based on the results, a welding residual stress profile for dissimilar metal nozzle butt welds is proposed that modifies the existing welding residual stress profile for austenitic pipe butt welds.
AB - In pressurized water nuclear reactors, dissimilar metal welds are susceptible to primary water stress corrosion cracking. To access this problem, accurate estimation of welding residual stresses is important. This paper provides general welding residual stress profiles in dissimilar metal nozzle butt welds using finite element analysis. By introducing a simplified shape for dissimilar metal nozzle butt welds, changes in the welding residual stress distribution can be seen using a geometry variable. Based on the results, a welding residual stress profile for dissimilar metal nozzle butt welds is proposed that modifies the existing welding residual stress profile for austenitic pipe butt welds.
KW - Dissimilar metal weld
KW - Finite element method(fem)
KW - Primary water reactors(pwr 7)
KW - Primary water stress corrosion crack(pwscc)
KW - Welding residual stress distribution
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U2 - 10.3795/KSME-A.2012.36.2.137
DO - 10.3795/KSME-A.2012.36.2.137
M3 - Article
AN - SCOPUS:84863120717
SN - 1226-4873
VL - 36
SP - 137
EP - 148
JO - Transactions of the Korean Society of Mechanical Engineers, A
JF - Transactions of the Korean Society of Mechanical Engineers, A
IS - 2
ER -