Effect of multiple hydrogen embrittlement mechanisms on crack propagation behavior of FCC metals: Competition vs. synergy

Liang, Shuang; Huang, Minsheng; Zhao, Lv; Zhu, Yaxin; Li, Zhenhuan

doi:10.1016/j.ijplas.2021.103023

Cited by 47 publications

(12 citation statements)

References 74 publications

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“…In the future research, in order to depict the crack-tip dislocation emission, two questions should be clear for researchers. One is when the dislocation can spread successfully from the crack-tip, the other is where the 'source' of the emitted dislocation should be located [38].…”

Section: Adsorption-induced Dislocation Emission (Aide)mentioning

confidence: 99%

“…It mainly captures the hydrogen-enhanced generation of vacancy H complexes or vacancy-hydrogen clusters and their pinning effect on the moving edge dislocations. However, studies have shown that unless the hydrogen concentration is abnormally high, the effect of hydrogenenhanced strain-induced vacancies (HESIV) on hydrogen-induced intergranular fracture is much weaker [38].…”

Section: Hydrogen-enhanced Strain-induced Vacancy Generation (Hesiv)mentioning

confidence: 99%

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Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

Chen

Zhao

et al. 2021

Metals

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High-pressure hydrogen tanks which are composed of an aluminum alloy liner and a carbon fiber wound layer are currently the most popular means to store hydrogen on vehicles. Nevertheless, the aluminum alloy is easily affected by high-pressure hydrogen, which leads to the appearance of hydrogen embrittlement (HE). Serious HE of hydrogen tank represents a huge dangers to the safety of vehicles and passengers. It is critical and timely to outline the mainstream approach and point out potential avenues for further investigation of HE. An analysis, including the mechanism (including hydrogen-enhanced local plasticity model, hydrogen-enhanced decohesion mechanism and hydrogen pressure theory), the detection (including slow strain rate test, linearly increasing stress test and so on) and methods for the prevention of HE on aluminum alloys of hydrogen vehicles (such as coating) are systematically presented in this work. Moreover, the entire experimental detection procedures for HE are expounded. Ultimately, the prevention measures are discussed in detail. It is believed that further prevention measures will rely on the integration of multiple prevention methods. Successfully solving this problem is of great significance to reduce the risk of failure of hydrogen storage tanks and improve the reliability of aluminum alloys for engineering applications in various industries including automotive and aerospace.

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Section: Adsorption-induced Dislocation Emission (Aide)mentioning

confidence: 99%

Section: Hydrogen-enhanced Strain-induced Vacancy Generation (Hesiv)mentioning

confidence: 99%

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

Chen

Zhao

et al. 2021

Metals

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“…The phenomenon leading to hydrogen atoms severe mechanical properties and degradation of metallic parts is generically known as hydrogen embrittlement (HE) 11‐16 . Various hydrogen embrittlement mechanisms have been described 9,17‐19 . However, the two most relevant micromechanisms are hydrogen‐enhanced decohesion (HEDE) and hydrogen‐enhanced localized plasticity (HELP) 18‐24 …”

Section: Introductionmentioning

confidence: 99%

“…The HEDE mechanism proposes that hydrogen reduces the cohesive metallic interatomic interactions, leading to smooth brittle fracture with limited plasticity manifested as intergranular fractures or cleavage‐like failure 9,17–20 . On the other hand, the HELP mechanism assumes that hydrogen accumulates in stress regions.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14][15][16] Various hydrogen embrittlement mechanisms have been described. 9,[17][18][19] However, the two most relevant micromechanisms are hydrogen-enhanced decohesion (HEDE) and hydrogen-enhanced localized plasticity (HELP). [18][19][20][21][22][23][24] The HEDE mechanism proposes that hydrogen reduces the cohesive metallic interatomic interactions, leading to smooth brittle fracture with limited plasticity manifested as intergranular fractures or cleavage-like failure.…”

Section: Introductionmentioning

confidence: 99%

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The effect of hydrogen on the fracture toughness of friction‐stir welded API 5L X70 pipeline steels

Giarola

Ávila

Cintho

et al. 2022

Fatigue Fract Eng Mat Struct

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The hydrogen embrittlement (HE) leads to severe steel degradation of mechanical properties. The hydrogen atoms diffuse into the steel and get positioned into reversible and irreversible trap sites. The pipe to transport oil and gas needs to be welded to construct long‐distance pipeline projects; thus, friction‐stir welding (FSW) has proven an excellent alternative to joining these pipelines. Therefore, this work assessed and analyzed the influence of hydrogen on the microstructure and fracture toughness of API 5L X70 steel welded by friction‐stir welding. The in‐service conditions were simulated by charging the specimen electrolytically in a 3.5% NaCl water solution with an intensity current of 2 mA·cm−2. According to fracture toughness tests, the base metal (BM) was more affected by hydrogen embrittlement than the friction‐stir zone (SZ), with a fracture toughness reduction of 20% after hydrogen charging. The SZ fracture toughness did not statistically show changes in hydrogen charging by the used times; however, the fracture mechanism changed from ductile to brittle‐like after 4 days of charging. The SZ depicted a better fracture toughness than BM due to the bainitic microstructure, a significant amount of irreversible hydrogen trapping.

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Hydrogen Diffusion and Hydrogen Embrittlement Failure Behavior of AH36 Marine Steel Subjected to High Heat Input Welding

Zhang

Cui

et al. 2022

steel research int.

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AH36 marine steel processed through high heat-input welding is subjected to microstructural characterization, hydrogen permeation test, internal friction test, and slow strain rate tensile test to reveal its hydrogen diffusion and hydrogen embrittlement failure behaviors. Compared with the base metal, the coarsegrained heat-affected zone (CGHAZ) exhibits a significantly coarsened microstructure and decreased hydrogen trap density, resulting in a high hydrogen diffusion coefficient and short hydrogen permeation time. The presence of hydrogen yields a hydrogen-induced Snoek internal friction peak and promotes the movement of the Snoek-Kê-Köster internal friction peak to the lowtemperature region. In addition, B and Kê peaks, which are not found in the base metal, appear in the CGHAZ. With increasing hydrogen content, the plastic loss and brittle fracture of the AH36 marine steel become increasingly significant, and the hydrogen embrittlement sensitivity of the heat-affected zone increases compared with that of the base metal. The discontinuous yield phenomenon gradually disappears under slow strain rate tension owing to the weak pinning effect of the Cottrell atmosphere on mobile dislocations.

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Effect of multiple hydrogen embrittlement mechanisms on crack propagation behavior of FCC metals: Competition vs. synergy

Cited by 47 publications

References 74 publications

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

The effect of hydrogen on the fracture toughness of friction‐stir welded API 5L X70 pipeline steels

Hydrogen Diffusion and Hydrogen Embrittlement Failure Behavior of AH36 Marine Steel Subjected to High Heat Input Welding

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