Through-thickness SCC susceptibility of 2024-T351 and 7050-T7451 extrudates in 3.5% NaCl solution

In the present study, the fatigue crack propagation (FCP) tests were conducted on X80 steel in air and artificial seawater (ASW) under various applied potentials to establish optimum and safe working limits of cathodic protection (CP). The slow strain rate test (SSRT) was also conducted on the X80 BM specimens in ASW under CP potential to identify the susceptibility of hydrogen affecting the FCP behavior. The CP potential of -850 and -1,050 mV SCE suppressed the environmental effect of seawater on the FCP behavior of X80 BM and WM specimens, showing almost identical da/dN-K curves for both air and ASW environments. The SSRT in ASW under CP potential of -1,050 mV SCE suggested that the X80 BM specimen steel is susceptible to hydrogen embrittlement, but the effect of hydrogen was believed to be marginal in affecting the FCP behavior of the X80 specimens at a loading frequency of 10 Hz. The FCP behavior of high strength X80 steel is discussed based on the fractographic observation to understand the FCP mechanism in seawater under various CP potentials.

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Effect of applied potential on fatigue crack propagation behavior of API X80 steel in seawater

Jeong

Lee

Seo

et al. 2014

Met. Mater. Int.

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Effect of applied potential on fatigue crack propagation behavior of Fe24Mn steel in seawater

et al. 2015

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Dislocation-aided electrochemical behavior of precipitates in stress corrosion cracking of Al–Zn–Mg–Cu alloys

Kayani

Park

Euh

et al. 2022

Materials Characterization

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Through-thickness SCC susceptibility of 2024-T351 and 7050-T7451 extrudates in 3.5% NaCl solution

Cited by 6 publications

References 23 publications

Effect of applied potential on fatigue crack propagation behavior of API X80 steel in seawater

Effect of applied potential on fatigue crack propagation behavior of API X80 steel in seawater

Effect of applied potential on fatigue crack propagation behavior of Fe24Mn steel in seawater

Dislocation-aided electrochemical behavior of precipitates in stress corrosion cracking of Al–Zn–Mg–Cu alloys

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