Effects of phosphorus segregation on stress corrosion cracking in the heat-affected zone of a dissimilar weld joint between a Ni-base alloy and a low alloy steel

Ziqing Zhai; Hiroshi Abe; Yuichi Miyahara; Yutaka Watanabe

doi:10.1016/j.corsci.2014.10.037

Effects of phosphorus segregation on stress corrosion cracking in the heat-affected zone of a dissimilar weld joint between a Ni-base alloy and a low alloy steel

Ziqing Zhai, Hiroshi Abe, Yuichi Miyahara, Yutaka Watanabe

ENG - Quantum Science and Energy Engineering

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

21 Citations (Scopus)

Abstract

Effects of phosphorus segregation on stress corrosion cracking (SCC) in the heat-affected zone of an Alloy 182-A533B dissimilar weld joint in high-temperature, oxygenated water doped with SO₄^2- and Cl^- were evaluated by creviced bent beam test. Results indicate that step cooling and the addition of Cl^- promoted SCC propagation and reactivation in the HAZ after cracks reach the fusion boundary. It is also suggested that phosphorus segregation at grain/packet boundaries and precipitate-matrix interfaces have promoted SCC, especially in coarse-grained HAZ and intercritically reheated coarse-grained HAZ.

Original language	English
Pages (from-to)	32-42
Number of pages	11
Journal	Corrosion Science
Volume	92
DOIs	https://doi.org/10.1016/j.corsci.2014.10.037
Publication status	Published - 2015 Mar 1

Keywords

A. Low alloy steel
Atom probe tomography
B. AFM
C. Segregation
C. Stress corrosion

ASJC Scopus subject areas

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

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10.1016/j.corsci.2014.10.037

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title = "Effects of phosphorus segregation on stress corrosion cracking in the heat-affected zone of a dissimilar weld joint between a Ni-base alloy and a low alloy steel",

abstract = "Effects of phosphorus segregation on stress corrosion cracking (SCC) in the heat-affected zone of an Alloy 182-A533B dissimilar weld joint in high-temperature, oxygenated water doped with SO42- and Cl- were evaluated by creviced bent beam test. Results indicate that step cooling and the addition of Cl- promoted SCC propagation and reactivation in the HAZ after cracks reach the fusion boundary. It is also suggested that phosphorus segregation at grain/packet boundaries and precipitate-matrix interfaces have promoted SCC, especially in coarse-grained HAZ and intercritically reheated coarse-grained HAZ.",

keywords = "A. Low alloy steel, Atom probe tomography, B. AFM, C. Segregation, C. Stress corrosion",

author = "Ziqing Zhai and Hiroshi Abe and Yuichi Miyahara and Yutaka Watanabe",

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doi = "10.1016/j.corsci.2014.10.037",

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T1 - Effects of phosphorus segregation on stress corrosion cracking in the heat-affected zone of a dissimilar weld joint between a Ni-base alloy and a low alloy steel

AU - Zhai, Ziqing

AU - Abe, Hiroshi

AU - Miyahara, Yuichi

AU - Watanabe, Yutaka

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Effects of phosphorus segregation on stress corrosion cracking (SCC) in the heat-affected zone of an Alloy 182-A533B dissimilar weld joint in high-temperature, oxygenated water doped with SO42- and Cl- were evaluated by creviced bent beam test. Results indicate that step cooling and the addition of Cl- promoted SCC propagation and reactivation in the HAZ after cracks reach the fusion boundary. It is also suggested that phosphorus segregation at grain/packet boundaries and precipitate-matrix interfaces have promoted SCC, especially in coarse-grained HAZ and intercritically reheated coarse-grained HAZ.

AB - Effects of phosphorus segregation on stress corrosion cracking (SCC) in the heat-affected zone of an Alloy 182-A533B dissimilar weld joint in high-temperature, oxygenated water doped with SO42- and Cl- were evaluated by creviced bent beam test. Results indicate that step cooling and the addition of Cl- promoted SCC propagation and reactivation in the HAZ after cracks reach the fusion boundary. It is also suggested that phosphorus segregation at grain/packet boundaries and precipitate-matrix interfaces have promoted SCC, especially in coarse-grained HAZ and intercritically reheated coarse-grained HAZ.

KW - A. Low alloy steel

KW - Atom probe tomography

KW - B. AFM

KW - C. Segregation

KW - C. Stress corrosion

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JO - Corrosion Science

JF - Corrosion Science

ER -

Effects of phosphorus segregation on stress corrosion cracking in the heat-affected zone of a dissimilar weld joint between a Ni-base alloy and a low alloy steel

Abstract

Keywords

ASJC Scopus subject areas

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