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Through‐wall welding residual stress profiles for dissimilar metal nozzle butt welds in pressurized water reactors
Author(s) -
SONG TAEKWANG,
KIM JISOO,
OH CHANGYOUNG,
KIM YUNJAE,
PARK CHIYONG,
LEE KYOUNGSOO
Publication year - 2011
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2011.01555.x
Subject(s) - nozzle , residual stress , butt welding , materials science , welding , finite element method , metallurgy , composite material , butt joint , stress (linguistics) , structural engineering , mechanical engineering , engineering , linguistics , philosophy
This paper provides approximate expressions for through‐wall welding residual stresses in dissimilar metal nozzle butt welds of pressurized water reactors. An idealized shape of nozzle is proposed, based on which systematic elastic–plastic thermo‐mechanical finite element analyses are conducted by varying the thickness and radius of the nozzle and the length of the safe‐end. Based on the results, a through‐wall welding residual stress profile for dissimilar metal nozzle butt welds is proposed by modifying the existing welding residual stress profile for austenitic pipe butt welds in the R6 procedure.