Influence of hydrogen and low temperature on mechanical behaviour of two pipeline steels

Fassina, P.; Bolzoni, F.; Fumagalli, G.; Lazzari, Luciano; Vergani, L.; Sciuccati, Augusto

doi:10.1016/j.engfracmech.2011.09.016

Cited by 60 publications

(21 citation statements)

References 9 publications

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“…Previously it was found that under the operating conditions, as a result of a prolonged contact between the pipe and corrosive environment, which leads to the electrolytic corrosion, hydrogenation of the pipeline wall occurs [24,25]. The phenomenon of embrittlement and accumulation of scattered structural defects is a consequence of the synergistic effect of operating stresses, corrosion processes and hydrogen on the material.…”

Section: Discussionmentioning

confidence: 99%

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Maruschak¹,

Panin²,

Polyvana³

et al. 2015

Adv. Sci. Technol. Res. J.

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By example of steel 17G1S, the regularities in the impact fracture of Charpy specimens at normal and low temperatures are described. The relationship between the energy parameters of fracture (impact toughness) and the deformation response of the material (the height of shear lips) of the specimens from the pipe steel is established. The micromechanisms of impact fracture of the material are described. At 20 °C and -30 °C, focal splitting of the material was observed on the fracture surface of specimens; at -60 °C, the material failed in a brittle manner by the mechanism of cleavage.

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Section: Discussionmentioning

confidence: 99%

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Maruschak¹,

Panin²,

Polyvana³

et al. 2015

Adv. Sci. Technol. Res. J.

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“…Effect of hydrogen on metals toughness depends on many parameters such as metal composition and microstructure (see for example [63e65]) and also temperature (see for example [5,66]). However, for limited variation in temperature…”

Section: Estimating Pipe Strength Under Hacmentioning

confidence: 99%

“…Cracking from pits may be accelerated by a Hydrogen Assisted Cracking (HAC) mechanism [3]. This has been a challenge for oil and gas industry [4,5]. Susceptibility to hydrogen assisted cracking has been shown to be greater for some stainless steels when made into pipes [6].…”

Section: Introductionmentioning

confidence: 99%

Capacity of pitting corroded pipes under hydrogen assisted cracking

Rajabipour¹,

Melchers²

2015

International Journal of Hydrogen Energy

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Pipe strength a b s t r a c tSteel pipes used in the oil and gas industry when subject to corrosion pitting may fail as a result of internal pressure and metal cracking influenced by hydrogen embrittlement. The progressive shape of the crack, including at the instant of failure, is predicted under increasing internal pressure. It is proposed that when hydrogen-assisted cracking (HAC) is involved the shape of the crack front may be estimated from a parallel numerical analyses in the absence of HAC. The theory for this is outlined and an example given.

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Section: Introductionmentioning

confidence: 99%

“…The effect of hydrogen on toughness property of steels was observed that it was enhanced in tests that require a long time to be performed, such as J integral tests, whereas little influence has been observed in quick Charpy impact tests. 19 The Charpy impact test is a very efficient way to detect hydrogen atmosphere quickly. The result of Es-Said's work indicated that mobile dislocations were able to transport hydrogen to material weak links much more rapidly than lattice diffusion at extremely short time.…”

Section: Introductionmentioning

confidence: 99%

Effects of hydrogen on the mechanical response of X80 pipeline steel subject to high strain rate tensile tests

Zheng

Zhang

Shi

et al. 2019

Fatigue Fract Eng Mat Struct

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Hydrogen‐induced degradation of X80 pipeline steel was investigated through a high strain rate tensile test (2 × 10−4/s) with interposed unloading, reloading, aging at 30°C, or annealing at 200°C with or without hydrogen charging. The results indicated that plasticity degradation does not occur in the hydrogen‐precharged specimens; however, hydrogen embrittlement occurs in the reloading stage when the specimens are charged with hydrogen in the unloading stage after applying a prestrain. Interposed aging at 30°C or annealing at 200°C can also increase the degradation. It indicates that the hydrogen traps caused by the strain along with hydrogen charging are the major source of dislocations. The formation of a hydrogen atmosphere around mobile dislocations, which is related to the rates of hydrogen diffusion and dislocation movement, plays an important role in the degradation process. Both pinning and depinning of dislocations affect plasticity degradation.

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Influence of hydrogen and low temperature on mechanical behaviour of two pipeline steels

Cited by 60 publications

References 9 publications

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Capacity of pitting corroded pipes under hydrogen assisted cracking

Effects of hydrogen on the mechanical response of X80 pipeline steel subject to high strain rate tensile tests

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