Synergistic effect of stress and crevice on the corrosion of N80 carbon steel in the CO 2 -saturated NaCl solution containing acetic acid

Li, Y.Z.; Guo, Xiaoyang; Zhang, G.A.

doi:10.1016/j.corsci.2017.05.005

Cited by 42 publications

(10 citation statements)

References 50 publications

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“…The formation of pitting and deepening in the occluded regions of the system are linked to the saturation of Fe2 + and the early formation of a little cohesive and brittle precipitate. Thus, it appears that iron oxide films were formed early and due to occlusive effect of crevices [20,21].…”

Section: Stress Corrosion Cracking Tests At 20 Bar Co 2 Pressure and 60 °Cmentioning

confidence: 99%

“…Li et al [20] evaluated API N80 (0.42% C) carbon steel crevice and bending stress synergistic effects under CO 2 -saturated aqueous solution and they noted that corrosion rate increases with stress. Their study noticed that marked deepening in the cavities in the occluded regions was detected when the combined effect of stress and crevice was analyzed.…”

Section: Stress Corrosion Cracking Tests At 20 Bar Co 2 Pressure and 60 °Cmentioning

confidence: 99%

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Quantitative analysis of localized corrosion in tensile armor wire of flexible riser submitted to sweet stress corrosion cracking testing with crevice

Trindade¹,

Jesus²,

Reis³

et al. 2021

Tecnol. Metal. Mater. Min.

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Failure of flexible risers can occur, among several factors, due to their cold drawn carbon steel tensile armor wires collapse. These wires are susceptible to corrosion by seawater which increases propensity to a synergistic sweet stress corrosion mechanism, when they are associated with CO 2 -saturation, high tension, pressure, temperature, and crevices occurrence. In the present study, the influence of crevice in the annular region of flexible risers on the severity of pitting corrosion was quantified. Two different cold drawn carbon steel wires were compared. Corrosion tests by immersion were carried out on wires subjected to three-point bending in synthetic seawater environment at 0.1 MPa, 25 °C and 2 MPa, 60 °C. The crevice occurrence and the internal energy were significant intensifying factors for pitting corrosion, which was demonstrated by the higher frequency and depth of the pittings and by the arrangement of corrosion deposits in crevice assembly samples. The carbon content of the wire did not significantly influence corrosion.

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Section: Stress Corrosion Cracking Tests At 20 Bar Co 2 Pressure and 60 °Cmentioning

confidence: 99%

Section: Stress Corrosion Cracking Tests At 20 Bar Co 2 Pressure and 60 °Cmentioning

confidence: 99%

Quantitative analysis of localized corrosion in tensile armor wire of flexible riser submitted to sweet stress corrosion cracking testing with crevice

Trindade¹,

Jesus²,

Reis³

et al. 2021

Tecnol. Metal. Mater. Min.

View full text Add to dashboard Cite

show abstract

“…Along with stress corrosion, different morphologies, rough or flat, will appear; these have different influences on the reliability and integrity of the structure. Rough surface morphology, such as pits, crevices, and cracks [4][5][6][7][8], increases the corrosion rate [9][10][11][12] and shorten the failure time of the structure [13]. On the contrary, flat surface morphology may improve the reliability and service life of the structure.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Induced Morphology Evolution in Stressed Solids

Dong

Zhang

et al. 2023

Metals

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Corrosion morphology is a key factor that influences the reliability and service life of a structure. As most structures service under stress corrosion, there is a great need to understand the effect of stress on the formation conditions of different morphologies. This paper introduces a numerical method to simulate the evolution of surface morphologies. The results indicate that a corroded surface will become rougher and sharper with an increase in stress, and as a consequence, the corrosion morphology will transfer from a flatter surface to a pit and then a crevice. The critical stress values for different morphologies (crevice, pit, and a flatter surface) were captured. Among the three morphologies, the flatter surface and pit maintain a fixed shape, also known as stable morphology. As stress exceeds a critical value, crevices are generated, and the morphology evolution becomes unstable. On the basis of the simulation results, the influence of morphology on the service life of the structure was evaluated. The corrosion velocity of a rough surface exceeds that of a flat surface, and this reduces the service life of the structure more significantly. With a rise in applied stress, the acceleration of corrosion presents a quadratically increasing relationship with applied stress.

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“…Among these issues, corrosion attracts far less attention than the others while its damage is no less (Xu et al, 2021). This is because damage of materials caused by corrosion is unobservable from the beginning, but corrosion, especially localized corrosion, is usually an important precursor for accident or failure (Hill and Lillard, 2006;Li et al, 2017). Corrosion of rail tracks induces huge economic loss, and it has been reported that direct cost resulted from rail track corrosion (railcar excluded), including replacement of corroded components, maintenance regarding corrosion mitigation, and application of corrosion protection technologies, was 18.88 billion RMB (Hou et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The boundary of ferrite and cementite has been observed to dissolve preferentially, resulting in threatening crack-like trenches (Murase et al, 2021). Moreover, localized (crevice) corrosion coupled with stress can potentially lead to cracking (Hernandez et al, 2009;Li et al, 2017;Li et al, 2020). Crevice corrosion of pearlitic steel was observed to start from oval-like spots ascribed to preferential dissolution of specific pearlitic nodules (Xu et al, 2022), while the effect of interlamellar spacing on the initiation and development of crevice corrosion of pearlitic steels is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System

Wang

Zhang

et al. 2022

Front. Mater.

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Rail foot covered by a fastener will suffer from crevice corrosion, leading to thinning and localized attack of crevice interior posing a risk of failure. This work investigated crevice corrosion behavior of a typical pearlitic high-speed rail steel U75V, focusing for the first time on the effect of pearlitic microstructure refinement achieved by heat treatment with different cooling rates 2, 5, and 10°C/s. Under anodic polarization, localized dissolved spots presented on the as-received sample, where crevice corrosion mostly initiated from. For cooling rates 2 and 5°C/s, localized dissolved spots were also observed but crevice corrosion was mostly presented as general corrosion instead of from local spots, ascribed to enhanced tendency of uniform dissolution due to microstructure refinement and homogenization. For cooling rate 10°C/s, crevice corrosion expanded flocculently, ascribed to preferential dissolution of pearlitic nodules with entangled cementite due to over refinement. Crevice corrosion was obviously accelerated by microstructure refinement. Cooling rates 5 and 10°C/s led to the fastest and slowest expansion of the corroded area, respectively, while the corrosion depth was just the opposite based on the same amount of metal loss. This work provides important information regarding the effect of pearlitic microstructure refinement on crevice corrosion and introduces a facile method for in situ monitoring of crevice corrosion.

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Synergistic effect of stress and crevice on the corrosion of N80 carbon steel in the CO 2 -saturated NaCl solution containing acetic acid

Cited by 42 publications

References 50 publications

Quantitative analysis of localized corrosion in tensile armor wire of flexible riser submitted to sweet stress corrosion cracking testing with crevice

Quantitative analysis of localized corrosion in tensile armor wire of flexible riser submitted to sweet stress corrosion cracking testing with crevice

Corrosion Induced Morphology Evolution in Stressed Solids

Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System

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