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

doi:10.1016/j.corsci.2011.08.046

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

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	4309-4317
Number of pages	9
Journal	Corrosion Science
Volume	53
Issue number	12
DOIs	https://doi.org/10.1016/j.corsci.2011.08.046
Publication status	Published - 2011 Dec 1

Keywords

A. Alloy
A. Low alloy steel
B. SEM
B. TEM
C. Stress corrosion
C. Welding

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2011.08.046

Cite this

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abstract = "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.",

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T1 - 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

AU - Peng, Qunjia

AU - Xue, He

AU - Hou, Juan

AU - Sakaguchi, Kazuhiko

AU - Takeda, Yoichi

AU - Kuniya, Jiro

AU - Shoji, Tetsuo

PY - 2011/12/1

Y1 - 2011/12/1

N2 - 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.

AB - 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.

KW - A. Alloy

KW - A. Low alloy steel

KW - B. SEM

KW - B. TEM

KW - C. Stress corrosion

KW - C. Welding

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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

Abstract

Keywords

ASJC Scopus subject areas

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