Effects of microstructure banding on hydrogen assisted fatigue crack growth in X65 pipeline steels

Ronevich, Joseph Allen; Somerday, Brian P.; Marchi, Chris San

doi:10.1016/j.ijfatigue.2015.09.004

Cited by 93 publications

(27 citation statements)

References 18 publications

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“…In such systems, various components (e.g., vessels, valves, regulators and metering devices) are exposed to high-pressure hydrogen gas environment. For a safe use of such components, it is necessary to properly understand the degradation of strength properties caused by the interaction of hydrogen with the microstructure, since hydrogen can easily penetrate into the material and causes “hydrogen embrittlement”, e.g., ductility loss in tensile test [1,2] and acceleration of fatigue crack growth [3,4,5,6,7,8] in a number of metallic materials. In addition, the degradation mechanism should also be clarified to review existing standards and regulations reasonably based on scientific grounds.…”

Section: Introductionmentioning

confidence: 99%

Role of Hydrogen-Charging on Nucleation and Growth of Ductile Damage in Austenitic Stainless Steels

et al. 2019

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Hydrogen energy is a possible solution for storage in the future. The resistance of packaging materials such as stainless steels has to be guaranteed for a possible use of these materials as containers for highly pressurized hydrogen. The effect of hydrogen charging on the nucleation and growth of microdamage in two different austenitic stainless steels AISI316 and AISI316L was studied using in situ tensile tests in synchrotron X-ray tomography. Information about damage nucleation, void growth and void shape were obtained. AISI316 was found to be more sensitive to hydrogen compared to AISI316L in terms of ductility loss. It was measured that void nucleation and growth are not affected by hydrogen charging. The effect of hydrogen was however found to change the morphology of nucleated voids from spherical cavities to micro-cracks being oriented perpendicular to the tensile axis.

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Section: Introductionmentioning

confidence: 99%

Role of Hydrogen-Charging on Nucleation and Growth of Ductile Damage in Austenitic Stainless Steels

et al. 2019

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“…Some fatigue crack branching has been observed in highly directional steels, where harder pearlite or cementite deflect fatigue cracks as they grow [22,23]. In addition, branched cracking was observed in cyclic tests of X65 tested in high hydrogen atmospheres, which can delaminate between microstructural differences near the crack tip [24].…”

Section: Analysis and Discussionmentioning

confidence: 99%

Investigation and Recommendations on Bottom-Dented Petroleum Pipelines

Mueller

Liu

Chhatre

et al. 2017

J Fail. Anal. and Preven.

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On September 21, 2015, the National Transportation Safety Board responded to a petroleum leak from a transmission pipeline in Centreville, VA. A small through crack was found leaking at a dent on the underside of the pipe, located away from any welds. The investigation found that corrosion fatigue could initiate at small dents, typically caused by impingement. While top-side dents from excavation and servicing have well-been documented and regulated, bottom-side dents, deemed acceptable per regulations, were found to be susceptible to stress corrosion and fatigue cracking. This investigation explored multiple and fundamental aspects of cracking in steel pipe dents, including nondestructive inspection, electron microscopy, finite element modeling, and long-term cyclic loading tests to characterize the cause of this pipeline accident.

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“…On the other hand, CF in seawater shares the same HE nature with the HAC of pipeline steels in hydrogen gas, while the experimental data of HE influenced fatigue cracking in hydrogen gas are plentiful. Ronevich et al (2016) performed a series of tests on X65 pipeline steels and obtained the HE influenced fatigue crack growth data.…”

Section: Applicationmentioning

confidence: 99%