Effect of microstructures and inclusions on hydrogen-induced cracking and blistering of A537 steel

Du, Xueshan; Cao, Wenbo; Wang, C.D.; Li, S.J.; Zhao, Jingyu; Sun, Yingjuan

doi:10.1016/j.msea.2015.06.085

Cited by 47 publications

(19 citation statements)

References 37 publications

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“…In hydrogen, characteristics of crack resistance transversely and longitudinal oriented specimens are 28 and 38.5 MPa·m 1/2 . Similar results were obtained in the study of hydrogen embrittlement of steels 4130 and 4310 and other materials [22][23][24]. e most likely reason for anisotropy of mechanical properties can be anisotropic structural boundaries in the alloy, i.e., the dependence of fate crack length, falling on the structural boundary, and on the orientation of the applied load.…”

Section: Advances In Materials Science and Engineeringsupporting

confidence: 81%

“…e difference in the degree of hydrogen embrittlement of the TV and LT samples is also due, probably, to the formed rolling process by the dislocation texture, which is decisive in hydrogen cracking [12,13]. In addition, it is known that the effective rate of hydrogen diffusion depends substantially on the orientation of the samples [23].…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

“…e change in the nature of the fracture from transgranular to intergranular under the action of hydrogen is a characteristic feature of dispersionhard austenitic steels and alloys due to the concentration at the grain boundaries of carbides, intermetallics, and hydrogen [1,2,4,5,[24][25][26][27]. Figure 7: X-ray patterns of the alloys with different content of carbides (I, II, see Table 1): a, Ni-base solid solution; b, Ni 3 (Al, Mo, Nb); c, (Cr, Ni, Fe) 23 (C, N) 6 .…”

Section: Influence Of Heat Treatment Regimes and Chemicalmentioning

confidence: 99%

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Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys

Balitskii

Ivaskevich

2019

Advances in Materials Science and Engineering

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Influence of hydrogen pressure and internal hydrogen contents on short-term strength, plasticity, and plane-stress fracture toughness of 05Cr19Ni55 alloys at pressure up to 30 MPa was investigated. It was established that the crack resistance parameters K c of alloys decrease with displacement rates decreasing similar to elongation (δ) and reduction of area (ψ) of smooth specimens. e maximum hydrogen influence is achieved at strain rate speeds less than 0.1 mm/min and hydrogen pressures above 15 MPa when δ and K c of prehydrogenated samples are reduced by 3 times. e plane-strain conditions required for the evaluation of K _c were fulfilled on compact tension 05Cr19Ni55 alloy specimens with thickness above 20 mm under hydrogen pressure 30 MPa and preliminary dissolved hydrogen concentration above 20 wppm. Regardless of the test conditions, the value of the characteristics of plasticity (δ, ψ) and fracture toughness (K s ) of alloy (TO1) specimens oriented in the transverse direction (orientation TV) is significantly lower than that of specimens oriented in the longitudinal direction (LT). Alloy cleaning by vacuum arc remelting and optimization of heat treatment regime increase their hydrogen resistance.

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Section: Advances In Materials Science and Engineeringsupporting

confidence: 81%

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

Section: Influence Of Heat Treatment Regimes and Chemicalmentioning

confidence: 99%

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Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys

Balitskii

Ivaskevich

2019

Advances in Materials Science and Engineering

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“…Apart from the microstructural orientation of pearlite, another factor affecting hydrogen diffusion in the different steels is the density of non-metallic inclusions due to the interactions between inclusions and hydrogen [24,25]. In the matter of mechanical properties, yield strength (σY) and ultimate tensile strength (UTS) are shown in Figure 1 for the three selected drawing levels.…”

Section: Methodsmentioning

confidence: 99%

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Toribio

Vergara

Lorenzo

2016

Metals

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Abstract:The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper. Results indicate that the location of the zone where fracture initiates (fracture process zone) in pearlitic steel samples with a blunt notch directly depends on the loading rate or crosshead speed. For slow testing rates, such a zone is placed in the specimen center due to hydrogen diffusion towards the prospective fracture places located in the central area of the section. On the other hand, in the case of high testing rates, the process of hydrogen-assisted fracture initiates near the sample periphery, i.e., in the vicinity of the notch tip, because in such quick tests hydrogen does not have enough time to diffuse towards inner points of the specimen.

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“…As we know, hydrogen is a ubiquitous element that can enter steels from different processes, such as smelting, acid pickling, heat working and corrosion [6][7][8][9]. Unfortunately, hydrogen in an axle would cause hydrogen-assisted stress, corrosion cracking and hydrogen embrittlement (HE) [10,11], which gives rise to a huge risk for the safe operation of high-speed railway systems. Thus, further exploration of hydrogen mobility in steels is imperative for advancing the railway axles.…”

Section: Introductionmentioning

confidence: 99%

Effect of Microstructure on Hydrogen Permeation in EA4T and 30CrNiMoV12 Railway Axle Steels

Liu

Zhang

et al. 2019

Metals

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A comparative study was conducted to reveal the effect of microstructure on hydrogen permeation in the EA4T and 30CrNiMoV12 railway axle steels. Unlike the EA4T with its sorbite structure, 30CrNiMoV12 steel shows a typical tempered martensitic structure, in which a large number of fine, short, rod-like, and spherical carbides are uniformly dispersed at boundaries and inside laths. More importantly, this structure possesses plentifully strong hydrogen traps, such as nanosized Cr7C3, Mo2C, VC, and V4C3, thus resulting in a high density of trapping sites (N = 1.17 × 1022 cm−3). The hydrogen permeation experiments further demonstrated that, compared to EA4T, the 30CrNiMoV12 steel not only delivered minimally effective hydrogen diffusivity but also had a high hydrogen concentration. The activation energy for hydrogen diffusion of the 30CrNiMoV12 steel was greatly increased from 23.27 ± 1.94 of EA4T to 47.82 ± 2.14 kJ mol−1.

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Effect of microstructures and inclusions on hydrogen-induced cracking and blistering of A537 steel

Cited by 47 publications

References 37 publications

Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys

Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Effect of Microstructure on Hydrogen Permeation in EA4T and 30CrNiMoV12 Railway Axle Steels

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