Effect of hydrogen concentration on strain behaviour of pipeline steel

Dmytrakh, І. М.; Leshchak, R. L.; Syrotyuk, А. М.

doi:10.1016/j.ijhydene.2015.01.094

Cited by 48 publications

(5 citation statements)

References 11 publications

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“…They proposed the existence of a specific H concentration threshold, or characteristic H concentration, marking a shift in HE mechanism. A similar trend was reported by Liu et al The existence of such a characteristic H concentration becomes more evident when plotting the variation of critical stress versus the concentration, as illustrated by Dmytrakh et al The critical stress decreases only mildly within a range of low H concentrations until the characteristic value; beyond the value, there’s a sharp drop in strength within a narrow concentration range. This strength degradation stabilizes at a lower limit with further concentration increase.…”

Section: Knowledge Base About Hesupporting

confidence: 81%

“…The fracture surface in the absence of H has a dimpled feature produced by a microvoid process as discussed in Section , while quasi-cleavage or IG fracture is usually observed when the H concentration is sufficiently high. In the aforementioned experiment, Dmytrakh et al found that dimples still remain the dominant feature of fracture surface when H concentration is low; quasi-cleavage was observed only when the concentration of H was high enough. In an in situ H charging tensile experiment on a tensile specimen made of pipeline steel, H-induced quasi-cleavage was observed in the region close to the notch surface; moving away from the notch root to the centre of the specimen, small dimples became visible even under low magnification; ductile fracture features with large dimples were observed at the centre of the specimen.…”

Section: Knowledge Base About Hementioning

confidence: 99%

“…While the degree of H-induced loss of ductility increases with H concentration, the relationship between these two is not proportional. Dmytrakh et al 750 observed that the extent of H-induced ductility loss escalates with increasing H concentration, yet this relationship is not linear. In their tensile tests on H-pre-charged specimens, ductility, gauged by failure strain, diminished mildly at low H levels but drastically at high concentrations.…”

Section: Chemical Reviewsmentioning

confidence: 99%

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Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Hydrogen is considered a clean and efficient energy carrier crucial for shaping the net-zero future. Large-scale production, transportation, storage, and use of green hydrogen are expected to be undertaken in the coming decades. As the smallest element in the universe, however, hydrogen can adsorb on, diffuse into, and interact with many metallic materials, degrading their mechanical properties. This multifaceted phenomenon is generically categorized as hydrogen embrittlement (HE). HE is one of the most complex material problems that arises as an outcome of the intricate interplay across specific spatial and temporal scales between the mechanical driving force and the material resistance fingerprinted by the microstructures and subsequently weakened by the presence of hydrogen. Based on recent developments in the field as well as our collective understanding, this Review is devoted to treating HE as a whole and providing a constructive and systematic discussion on hydrogen entry, diffusion, trapping, hydrogen–microstructure interaction mechanisms, and consequences of HE in steels, nickel alloys, and aluminum alloys used for energy transport and storage. HE in emerging material systems, such as high entropy alloys and additively manufactured materials, is also discussed. Priority has been particularly given to these less understood aspects. Combining perspectives of materials chemistry, materials science, mechanics, and artificial intelligence, this Review aspires to present a comprehensive and impartial viewpoint on the existing knowledge and conclude with our forecasts of various paths forward meant to fuel the exploration of future research regarding hydrogen-induced material challenges.

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Section: Knowledge Base About Hesupporting

confidence: 81%

Section: Knowledge Base About Hementioning

confidence: 99%

Section: Chemical Reviewsmentioning

confidence: 99%

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Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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“…Reduction in the tensile strength and elongation suggests that the base metal samples and the HAZ samples of X80 steel were strongly susceptible to HE [3,51], as shown in Figure 5, with a general trend that the HE susceptibility increases with an increase in the hydrogen concentration. Figure 6 shows that the hydrogen concentration increases because of increasing hydrogen pressure or current density and reaction time (fatigue frequency or strain rate) [52,53,54,55,56].…”

Section: Discussionmentioning

confidence: 99%

Hydrogen-Assisted Crack Growth in the Heat-Affected Zone of X80 Steels during in Situ Hydrogen Charging

Feng

An³

et al. 2019

Materials

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Herein, the hydrogen embrittlement of a heat-affected zone (HAZ) was examined using slow strain rate tension in situ hydrogen charging. The influence of hydrogen on the crack path of the HAZ sample surfaces was determined using electron back scatter diffraction analysis. The hydrogen embrittlement susceptibility of the base metal and the HAZ samples increased with increasing current density. The HAZ samples have lower resistance to hydrogen embrittlement than the base metal samples in the same current density. Brittle circumferential cracks located at the HAZ sample surfaces were perpendicular to the loading direction, and the crack propagation path indicated that five or more cracks may join together to form a longer crack. The fracture morphologies were found to be a mixture of intergranular and transgranular fractures. Hydrogen blisters were observed on the HAZ sample surfaces after conducting tensile tests at a current density of 40 mA/cm2, leading to a fracture in the elastic deformation stage.

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“…Hydrogen embrittlement causes a reduction in mechanical properties, while a change in electrochemical properties causes a reduction in the corrosive properties of metal alloys [5]. Lowering both types of properties result in shortening the operational reliability time [8,9], which may affect both the safety of users and the shorter service life of metal alloy constructions [10][11][12]. The knowledge of the influence of hydrogen on structural alloys may allow us to increase the safety of use, but also to extend the service life of devices, which in turn contributes to environmental protection, as it postpones the need to manufacture new parts [13].…”

Section: Introductionmentioning

confidence: 99%

Deterioration of Property of Aluminum Alloys (EN AW-1050A, EN AW-5754 and EN AW-6060) by Absorbed Hydrogen

Włodarczyk

2022

Applied Sciences

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The paper reports the results of research on the effect of hydrogen penetration on the variations in the mechanical properties of selected aluminum alloys. As a result of the study, it can be observed that such variations contribute to the deterioration of mechanical properties, which, in turn, contributes to shortening the reliability time associated with the operation of aluminum alloy structures. The analysis involved structural aluminum alloys: EN AW-1050A, EN AW-5754 and EN AW-6060. Tensile strength and impact strength were measured. It was demonstrated that the absorption of hydrogen by the analyzed alloys led to the deterioration of mechanical properties of aluminum alloys. The performed measurements were compared to the previous research results regarding the influence of hydrogen on the deterioration of corrosion properties. The analysis of the influence of hydrogen on both issues allowed us to notice the reasons for shortening the operational reliability time of aluminum alloy parts. The awareness of the influence of hydrogen on aluminum alloys may contribute to the development of hydrogen systems or installations in which aluminum alloys can be used as a construction material, e.g., fuel cells, hydrogen supply pipes, block of combustion engine powered by hydrogen, etc. In the era of the development of zero-emission vehicles, the use of hydrogen as fuel is gaining more and more importance, where the influence of hydrogen on the properties of materials is an important issue.

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Effect of hydrogen concentration on strain behaviour of pipeline steel

Cited by 48 publications

References 11 publications

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Hydrogen-Assisted Crack Growth in the Heat-Affected Zone of X80 Steels during in Situ Hydrogen Charging

Deterioration of Property of Aluminum Alloys (EN AW-1050A, EN AW-5754 and EN AW-6060) by Absorbed Hydrogen

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