Evolution from near-neutral to high-pH environments susceptible to stress corrosion cracking: The role of sulfate and bicarbonate

Shidong Wang; Hamed Shirazi; Guijiang Diao; Hanan Farhat; Weixing Chen

doi:10.1016/j.corsci.2024.112000

Evolution from near-neutral to high-pH environments susceptible to stress corrosion cracking: The role of sulfate and bicarbonate

Shidong Wang^*, Hamed Shirazi, Guijiang Diao, Hanan Farhat, Weixing Chen^*

^*Corresponding author for this work

QEERI - Corrosion Center

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

3 Citations (Scopus)

Abstract

Stress corrosion cracking (SCC) testing was conducted on pipeline steels to investigate the transition from near-neutral to high-pH environments via solution evaporation and concentration. The study clarified the roles of sulfate and bicarbonate in enhancing crack dissolution and their impacts on SCC. In sulfate-absent concentrated solutions, intergranular branching primarily resulted from direct propagation from the crack tip, accompanied by microcrack coalescence. The presence of sulfate effectively halted further growth by inducing crack-tip blunting, thereby reducing the mechanical driving force for crack propagation. This explanation clarifies why regions ideal for SCC exhibit no reported incidents, offering strategies for SCC mitigation.

Original language	English
Article number	112000
Number of pages	22
Journal	Corrosion Science
Volume	231
DOIs	https://doi.org/10.1016/j.corsci.2024.112000
Publication status	Published - 1 May 2024

Keywords

Anodic dissolution
Polarization
Rust
Steel
Stress corrosion

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10.1016/j.corsci.2024.112000

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title = "Evolution from near-neutral to high-pH environments susceptible to stress corrosion cracking: The role of sulfate and bicarbonate",

abstract = "Stress corrosion cracking (SCC) testing was conducted on pipeline steels to investigate the transition from near-neutral to high-pH environments via solution evaporation and concentration. The study clarified the roles of sulfate and bicarbonate in enhancing crack dissolution and their impacts on SCC. In sulfate-absent concentrated solutions, intergranular branching primarily resulted from direct propagation from the crack tip, accompanied by microcrack coalescence. The presence of sulfate effectively halted further growth by inducing crack-tip blunting, thereby reducing the mechanical driving force for crack propagation. This explanation clarifies why regions ideal for SCC exhibit no reported incidents, offering strategies for SCC mitigation.",

keywords = "Anodic dissolution, Polarization, Rust, Steel, Stress corrosion",

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T1 - Evolution from near-neutral to high-pH environments susceptible to stress corrosion cracking

T2 - The role of sulfate and bicarbonate

AU - Wang, Shidong

AU - Shirazi, Hamed

AU - Diao, Guijiang

AU - Farhat, Hanan

AU - Chen, Weixing

PY - 2024/5/1

Y1 - 2024/5/1

N2 - Stress corrosion cracking (SCC) testing was conducted on pipeline steels to investigate the transition from near-neutral to high-pH environments via solution evaporation and concentration. The study clarified the roles of sulfate and bicarbonate in enhancing crack dissolution and their impacts on SCC. In sulfate-absent concentrated solutions, intergranular branching primarily resulted from direct propagation from the crack tip, accompanied by microcrack coalescence. The presence of sulfate effectively halted further growth by inducing crack-tip blunting, thereby reducing the mechanical driving force for crack propagation. This explanation clarifies why regions ideal for SCC exhibit no reported incidents, offering strategies for SCC mitigation.

AB - Stress corrosion cracking (SCC) testing was conducted on pipeline steels to investigate the transition from near-neutral to high-pH environments via solution evaporation and concentration. The study clarified the roles of sulfate and bicarbonate in enhancing crack dissolution and their impacts on SCC. In sulfate-absent concentrated solutions, intergranular branching primarily resulted from direct propagation from the crack tip, accompanied by microcrack coalescence. The presence of sulfate effectively halted further growth by inducing crack-tip blunting, thereby reducing the mechanical driving force for crack propagation. This explanation clarifies why regions ideal for SCC exhibit no reported incidents, offering strategies for SCC mitigation.

KW - Anodic dissolution

KW - Polarization

KW - Rust

KW - Steel

KW - Stress corrosion

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DO - 10.1016/j.corsci.2024.112000

M3 - Article

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SN - 0010-938X

VL - 231

JO - Corrosion Science

JF - Corrosion Science

M1 - 112000

ER -

Evolution from near-neutral to high-pH environments susceptible to stress corrosion cracking: The role of sulfate and bicarbonate

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Keywords

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