Effects of surface oxide films on hydrogen permeation and susceptibility to embrittlement of X80 steel under hydrogen atmosphere

Zhang, Timing; Zhao, Weimin; Zhao, Yujiao; Ouyang, Kai; Deng, Qiushi; Wang, Yonglin; Jiang, Wei

doi:10.1016/j.ijhydene.2017.12.170

Cited by 33 publications

(8 citation statements)

References 42 publications

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“…The time t=0 s indicates the start of hydrogen charging of the specimen, and it can be seen that the hydrogen penetration process of all specimens is divided into three stages [8] . The first stage is the penetration stage, the penetration time is tb.…”

Section: Test Results and Discussionmentioning

confidence: 99%

Research on hydrogen permeation in the X80 steel heat-affected zone with different heat inputs

Gou

Deng

Chen

et al. 2022

J. Phys.: Conf. Ser.

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Through electrochemical hydrogen permeation experiment at different hydrogen charging current densities, the hydrogen diffusion kinetic parameters such as penetration time tB , steady-state hydrogen permeation current density I ∞, hydrogen diffusion coefficient D, adsorbed hydrogen concentration C 0, hydrogen flux J, and hydrogen trap density NT in the heat-affected zone of X80 steel welding with different heat input were analyzed. The results show that the penetration time gradually decreases, and the I ∞ gradually increases with the increase of hydrogen charging current density. The penetration time of BM at the same hydrogen charging current density is the smallest, and the penetration times of CGHAZ specimens with different heat input conditions are relatively close. BM has the most significant hydrogen diffusion coefficient and negligible hydrogen trap density at the same hydrogen charging current densities. For CGHAZ, D significantly decreases and NT substantially increases, and there exists a threshold value that makes the lowest D in the CGHAZ with different heat inputs.

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Section: Test Results and Discussionmentioning

confidence: 99%

Research on hydrogen permeation in the X80 steel heat-affected zone with different heat inputs

Gou

Deng

Chen

et al. 2022

J. Phys.: Conf. Ser.

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“…This trend was not found for the corresponding values of the relative notched ultimate tensile strength, UTS (Figure 5c) where no significant degradation was reported up to a fugacity of 10.6 MPa. [6,8,9,[26][27][28][29][30][31][32][33][34][35][36]. (b) Tensile RRA of notched specimens for X70 and X80 steels data from [7][8][9]37,38].…”

Section: Tensile Testsmentioning

confidence: 99%

Effect of Hydrogen in Mixed Gases on the Mechanical Properties of Steels—Theoretical Background and Review of Test Results

Michler

Elsässer

Wackermann

et al. 2021

Metals

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This review summarizes the thermodynamics of hydrogen (H2) in mixed gases of nitrogen (N2), methane (CH4) and natural gas, with a special focus on hydrogen fugacity. A compilation and interpretation of literature results for mechanical properties of steels as a function of hydrogen fugacity implies that test results obtained in gas mixtures and in pure hydrogen, both at the same fugacity, are equivalent. However, this needs to be verified experimentally. Among the test methods reviewed here, fatigue crack growth testing is the most sensitive method to measure hydrogen effects in pipeline steels followed by fracture toughness testing and tensile testing.

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“…Small punch tests were carried out using the standard device [1] mounted onto an Instron testing machine with a 5 kN load capacity. A COD extensometer was used to accurately measure the punch displacement.…”

Section: Small Punch Testmentioning

confidence: 99%

“…Furthermore, the hydrogen induced cracking usually appears during the in-service life of structures. On this grounds, although the SSRT is commonly used for analysing mechanical properties in the presence of aggressive hydrogen environments [1], a different mechanical test is required when the volume of material available for testing is limited.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Hydrogen Induced Cracking by Means of the Small Punch Test: Effect of the Specimen Geometry and the Hydrogen Pre-Charge Mode

Díaz

Rodríguez

Gallego

et al. 2018

The 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment

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This paper presents a simplified procedure to analyse the Hydrogen Induced Cracking (HIC) of structural steels by means of the Small Punch Test (SPT). Two types of notched specimens were used: one with through-thickness lateral notch and another with surface longitudinal notch. The results for conventional specimens were compared with those for hydrogen pre-charged specimens. For this purpose, two different methods to introduce hydrogen in the specimens were used: cathodic/electrochemical pre-charging and pressurized gaseous hydrogen pre-charging. The results obtained with both methods are also discussed.

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Effects of surface oxide films on hydrogen permeation and susceptibility to embrittlement of X80 steel under hydrogen atmosphere

Cited by 33 publications

References 42 publications

Research on hydrogen permeation in the X80 steel heat-affected zone with different heat inputs

Research on hydrogen permeation in the X80 steel heat-affected zone with different heat inputs

Effect of Hydrogen in Mixed Gases on the Mechanical Properties of Steels—Theoretical Background and Review of Test Results

Analysis of the Hydrogen Induced Cracking by Means of the Small Punch Test: Effect of the Specimen Geometry and the Hydrogen Pre-Charge Mode

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