Role of water chemistry and microstructure in stress corrosion cracking in the fusion boundary region of an Alloy 182-A533B low alloy steel dissimilar weld joint in high temperature water

Qunjia Peng, He Xue, Juan Hou, Kazuhiko Sakaguchi, Yoichi Takeda, Jiro Kuniya, Tetsuo Shoji

研究成果: Article査読

50 被引用数 (Scopus)

抄録

Stress corrosion cracking (SCC) in the fusion boundary (FB) region of an Alloy 182-low alloy steel (LAS) dissimilar weld joint in 288 °C water was investigated by experiments and finite element simulation. Creviced bent beam and crack growth rate (CGR) experiments showed that, while the FB was a barrier to SCC growth, further crack growth into LAS was activated by a combined effect of sulfate and dissolved oxygen in water. Finite element simulation suggested that a positive gradient of hardness as the crack approached to the FB in dilution zone caused decreased CGR. Role of microstructure and water chemistry in SCC was discussed.

本文言語English
ページ(範囲)4309-4317
ページ数9
ジャーナルCorrosion Science
53
12
DOI
出版ステータスPublished - 2011 12 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料科学(全般)

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