Stress corrosion cracking behavior of X90 pipeline steel and its weld joint at different applied potentials in near-neutral solutions

Luo, Jun; Luo, Sheji; Li, Lifeng; Zhang, Liang; Wu, Gang; Zhu, Lixia

doi:10.1016/j.ngib.2018.08.002

Cited by 20 publications

(10 citation statements)

References 14 publications

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“…From experience, it has been observed that localized corrosion in welds is the most common mode of in-service failures of pipelines made from steel [4], which may lead to irreversible environmental damage. It was suggested by some authors [5][6][7][8] that welding pipeline steel should enhance corrosion susceptibility due to metallurgical changes and reduced tensile residual stresses. The microstructural differences between the weld zone and the base steel could result in an electrochemical galvanic effect, enhancing corrosion susceptibility [7].…”

Section: Introductionmentioning

confidence: 99%

“…In arc welding, several studies [4,8,[11][12][13][14] showed that due to high-temperature peak, the material microstructure changes, generating microstructural gradient zones of different properties, according to the distance from the fused bead. Usually, the HAZ presents the lowest corrosion resistance, limiting the components' application [4,8,[11][12][13][14]. Zhang and Cheng [7] studied the welded X70 pipeline steel's local dissolution mechanism in a near-neutral pH solution (NS4 solution).…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Behavior and Microstructural Characterization of Friction Stir Welded API X70 Steel

Giarola

Calderón-Hernández

Conde

et al. 2021

J. of Materi Eng and Perform

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Friction stir welding is an excellent alternative process used in pipelines circumferential welds due to fusion welding low corrosion resistance. This study describes the corrosion resistance as a function of the microstructural features resulting from an API X70 FSW weld joint. The microstructural features were examined by optical microscopy, scanning electron microscopy, and X-ray diffraction. The corrosion analysis was conducted employing potentiodynamic polarization tests using an electrochemical microcell, which allowed to test small circular areas delimited by a 2mm in diameter O-ring gasket. The base metal and heataffected zone were the most susceptible region to corrosion due to the banded microstructures, and the re-stirred-zone and stir zone was the most resistant region to corrosion because of grain refinement.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior and Microstructural Characterization of Friction Stir Welded API X70 Steel

Giarola

Calderón-Hernández

Conde

et al. 2021

J. of Materi Eng and Perform

View full text Add to dashboard Cite

show abstract

“…Corrosion is an electrochemical reaction causing to degrade material from the surface [1]. Corrosion phenomena is seen in many fields such as marine applications [2], industrial areas [3] and in environment [4,5]. Corrosion is also formed in different types such as uniform [6] and pitting [5,7].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of Mechanical Behavior of HY 80 Steel in Corrosive Mediums

Yılmaz,

Kosa,

Durmuşoğlu

2024

DEUFMD

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In this study, mechanical behavior of HY 80 steel in various mediums such as solutions of HCl, H2 S0 4 and NaOH has been investigated experimentally. The plate specimens, tensile specimens and V-notched specimens are immersed in solutions of HCl, H2 S0 4 and NaOH. Mass losses of immersed HY 80 flat plate specimens are measured after 1 week, 2 weeks and 4 weeks for each H2 S04 , NaOH and HCl solutions to determine the aggressivity of the corrosive medium to surface of HY 80 steel. Also, tensile specimens and V-notched specimens are immersed for 1, 2 and 4 weeks to study on the effect of corrosive medium on fracture toughness and yielding behavior of HY 80 steels. The results show that however, yielding strength and ultimate tensile strength of HY 80 steel have reduced after immersed in acidic solutions of HCl and H2 S04 , are stable after immersed in solution of NaOH. Furthermore, effect of acidic medium lower the fracture toughness of HY 80 steel.

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“…To study soils in the laboratories, the NS4 synthetic soil solution is widely used aiming to evaluate corrosive soils 7,8,31,32 . This standard solution was developed by Parkins 33 , considering the diversity of chemical composition that soils can have.…”

Section: Introductionmentioning

confidence: 99%

Proposal of a Novel Criteria for Soil Corrosivity Evaluation and the Development of New Soil Synthetic Solutions for Laboratory Investigations

et al. 2022

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A novel method to classify the aggressiveness of soil considering its physicochemical content and the development of new synthetic solutions for lab uses is proposed. The results showed that the main criteria existing in the literature for soil corrosivity classification might cause misunderstandings about the real aggressiveness. The synthetic solutions proposed aim to cover a wide range of soil found worldwide in order to refine the assessment of their characteristics hence their corrosivity. For the lab experiments, an API 5L X65 pipeline carbon steel was used. The solutions presented great reliability, and they seemed to be adequate to simulate soils with the presence of sulfate-reducing bacteria (SRB), chloride, and high pH.

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Stress corrosion cracking behavior of X90 pipeline steel and its weld joint at different applied potentials in near-neutral solutions

Cited by 20 publications

References 14 publications

Corrosion Behavior and Microstructural Characterization of Friction Stir Welded API X70 Steel

Corrosion Behavior and Microstructural Characterization of Friction Stir Welded API X70 Steel

An Experimental Investigation of Mechanical Behavior of HY 80 Steel in Corrosive Mediums

Proposal of a Novel Criteria for Soil Corrosivity Evaluation and the Development of New Soil Synthetic Solutions for Laboratory Investigations

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