Microstructure and pitting behavior of the dissimilar metal weld of 309L cladding and low alloy steel A533B

Zihao Wang, Jian Xu, Tetsuo Shoji, Yoichi Takeda, Hideki Yuya, Masataka Ooyama

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The microstructure and pitting behavior of a dissimilar metal weld (DMW) of 309L and low alloy steel (LAS) were investigated with various surface analysis techniques and potentiodynamic polarization. The heat affected zone (HAZ) consists of four zones i.e. are heavily etched zone, lightly etched zone, coarse bainite zone and fine bainite zone, respectively. Cr depletion takes place in some δ ferrite/γ boundaries in 309L. Pits prefer to initiate along the δ ferrite/γ boundaries and mainly grows in γ phase, leaving a δ ferrite skeleton.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalJournal of Nuclear Materials
Volume508
DOIs
Publication statusPublished - 2018 Sep

Keywords

  • AES
  • Pitting corrosion
  • Polarization
  • Welding

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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