Welding residual stress distributions for dissimilar metal nozzle butt welds in pressurized water reactors

Ji Soo Kim, Ju Hee Kim, Hong Yeol Bae, Chang Young Oh, Yun Jae Kim, Kyung Soo Lee, Tae Kwang Song

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)137-148
Number of pages12
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume36
Issue number2
DOIs
Publication statusPublished - 2012 Feb 1
Externally publishedYes

Keywords

  • Dissimilar metal weld
  • Finite element method(fem)
  • Primary water reactors(pwr 7)
  • Primary water stress corrosion crack(pwscc)
  • Welding residual stress distribution

ASJC Scopus subject areas

  • Mechanical Engineering

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