Microcrack clustering in stress corrosion cracking of 22Cr and 25Cr duplex stainless steels

Wickström, Leyla; Mingard, Ken; Hinds, Gareth; Turnbull, A.

doi:10.1016/j.corsci.2016.03.024

Cited by 19 publications

(16 citation statements)

References 10 publications

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“…A number of researchers have found that the occurrence of pitting corrosion was an important contributing factor in crack initiation during the process of SCC . Furthermore, many other researchers have shown that the temperature of maximum SCC susceptibility is between 80–120 °C .…”

Section: Resultsmentioning

confidence: 99%

“…A number of researchers have found that the occurrence of pitting corrosion was an important contributing factor in crack initiation during the process of SCC. [13,14,30] Furthermore, many other researchers have shown that the temperature of maximum SCC susceptibility is between 80-120°C. [3] Van Gelder et al [31] found that DSS (UNS 31803) when subjected to slow plastic strain was susceptible to SCC in sulphidechloride media at temperatures higher than 80°C.…”

Section: Morphology Of Corrosion Attackmentioning

confidence: 99%

“…Test results from four‐point bend specimens of austenitic stainless steel in chloride environment showed increased susceptibility to pitting corrosion with increased pre‐existing surface roughness or damage while compact tension test results in simulated boiling water reactor conditions showed that ppb level of chloride may result in fast SCC of low alloy steels . SCC of 22 and 25Cr SDSS under evaporative seawater conditions using uniaxial tensile specimen has been shown to depend on the level of applied stress and the test temperature; as the applied stress increased the threshold temperature for corrosion and cracking decreased . A summary of the effects of intrinsic material parameters (e.g., chemical composition, microstructure, and surface condition) and environment (e.g., pH, temperature, concentration of aggressive species, and DO) on the initiation and growth of pits in metals has recently been presented by Soltis .…”

Section: Introductionmentioning

confidence: 97%

“…[13] SCC of 22 and 25Cr SDSS under evaporative seawater conditions using uniaxial tensile specimen has been shown to depend on the level of applied stress and the test temperature; as the applied stress increased the threshold temperature for corrosion and cracking decreased. [14] A summary of the effects of intrinsic material parameters (e.g., chemical composition, microstructure, and surface condition) and environment (e.g., pH, temperature, concentration of aggressive species, and DO) on the initiation and growth of pits in metals has recently been presented by Soltis. [15] Although Keitelman and Alvarez elucidation of the localized acidification pitting model (initiation and growth) by Galvele stated that it did not consider the interactions between dissolved metal ions and chloride or other anionic species in solution; they concluded that laboratory experiments and field experience with alloys like 22 and 25Cr SDSS confirmed quantitatively the predictions of Galvele's model.…”

Section: Introductionmentioning

confidence: 99%

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Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension

Lasebikan

Akisanya

Deans

2018

Materials & Corrosion

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The oil and gas industry, like many others is constantly looking at ways to keep costs of well completion down based on cost effective solutions that do not compromise safety. This combined with the desire to develop new oil and gas fields that are very challenging in terms of operating pressures, temperatures, and corrosivity of the environment may result in the need to utilize materials closer to their mechanical loading limit in a corrosive environment. Modern alloys of high strength and corrosion resistance are often more susceptible to cracking. With a move toward higher production pressures, and temperature, production tubing for downhole use may become a limiting factor for exploration of future oil and gas wells. Typically, materials and corrosion test samples are usually set up to examine material behavior under single mode loading (e.g., tensile sample) and not combined loads experienced by a production tubing in a well completion. A novel test set‐up was developed to simulate stresses in a production tubing string with the potential to define combined load conditions in a corrosive environment once mechanical load limit is determined. In small scale tests cold worked super duplex stainless steel mini pipes were subjected to combined load, that is, axial stress simulating weight of the tubing string and internal pressure (from the reservoir). The mechanical load limit (failure envelope) was determined in the absence of a corrosive environment thereafter the mini pipes were subjected to load conditions below mechanical limit in a corrosive environment to determine load and environment conditions that would not lead to crack initiation. The potential pipe load limit when in the corrosive environment is below the corrosion test load condition to avoid crack initiation and failure.

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Section: Resultsmentioning

confidence: 99%

Section: Morphology Of Corrosion Attackmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension

Lasebikan

Akisanya

Deans

2018

Materials & Corrosion

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“…A high level of cold work has been reported to decrease the stress corrosion cracking resistance of UNS S32550 duplex stainless steel [ 19 ]. Dealloying in the nanocrystalline layer by surface grinding and subsequent cracking of the dealloyed layer have been observed in 22Cr and 25Cr duplex stainless steels after testing under evaporative seawater conditions [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

SCC of 2304 Duplex Stainless Steel—Microstructure, Residual Stress and Surface Grinding Effects

et al. 2017

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The influence of surface grinding and microstructure on chloride induced stress corrosion cracking (SCC) behavior of 2304 duplex stainless steel has been investigated. Grinding operations were performed both parallel and perpendicular to the rolling direction of the material. SCC tests were conducted in boiling magnesium chloride according to ASTM G36; specimens were exposed both without external loading and with varied levels of four-point bend loading. Residual stresses were measured on selected specimens before and after exposure using the X-ray diffraction technique. In addition, in-situ surface stress measurements subjected to four-point bend loading were performed to evaluate the deviation between the actual applied loading and the calculated values according to ASTM G39. Micro-cracks, initiated by grinding induced surface tensile residual stresses, were observed for all the ground specimens but not on the as-delivered surfaces. Loading transverse to the rolling direction of the material increased the susceptibility to chloride induced SCC. Grinding induced tensile residual stresses and micro-notches in the as-ground surface topography were also detrimental.

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Unraveling Magnesium Alloy Corrosion Patterns Through Unsupervised Machine Learning: Exploring Clustering Techniques for Enhanced Insight

Moses,

Peng,

Wang

et al. 2024

JOM

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Microcrack clustering in stress corrosion cracking of 22Cr and 25Cr duplex stainless steels

Cited by 19 publications

References 10 publications

Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension

Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tension

SCC of 2304 Duplex Stainless Steel—Microstructure, Residual Stress and Surface Grinding Effects

Unraveling Magnesium Alloy Corrosion Patterns Through Unsupervised Machine Learning: Exploring Clustering Techniques for Enhanced Insight

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