Promising tube steels for gas pipelines

Khul'ka, K.; Aleksandrov, S. I.

doi:10.1007/s11015-006-0053-2

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…The oceans have become the centre of oil and gas development worldwide, with marine oil production growing rapidly, concentrated in deep-sea regions [1]. In order to exploit the oil and gas resources, Russia [2], America [3] and India [4] have laid long-distance pipelines under the sea at depths of 2150, 3500 and 2454 m, respectively. Pipeline steel in service in deep-sea regions inevitably suffers from severe corrosion due to the complex deep-sea environmental factors [5], including water velocity, dissolved oxygen, temperature, salinity, microbiology and, in particular, hydrostatic pressure (HP).…”

Section: Introductionmentioning

confidence: 99%

Hydrostatic pressure effects on corrosion behaviour of X80 steel in artificial sea water

Zhu

Liu

et al. 2021

Corrosion Engineering, Science and Technology

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The effect of hydrostatic pressure (HP) on the corrosion behaviour of X80 steel is investigated to assist the development of deep-sea oil and gas resources. The results show that the corrosion current increases as HP increases whereas the charge transfer resistance follows the opposite trend. The corrosion products are composed of γ-FeOOH, α-Fe 2 O 3 and α-FeOOH at atmospheric pressure, while Fe 3 O 4 is only formed at a high HP. Additionally, the inner layer of the corrosion products contains more Fe 3 O 4 compared with the surface corrosion layer. HP accelerates the corrosion rate of X80 steel due to its effect on the chemical and physical properties of the corrosion products, including the promoted reduction of γ-FeOOH and the formation of wider and deeper cracks on the corrosion product layer.

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Section: Introductionmentioning

confidence: 99%

Hydrostatic pressure effects on corrosion behaviour of X80 steel in artificial sea water

Zhu

Liu

et al. 2021

Corrosion Engineering, Science and Technology

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“…Considerable research avenues are available due to the fact that the properties of microalloyed steels can be tailored according to specific requirements either through addition of suitable microalloying elements or by adopting thermo-mechanical controlled processing (TMCP) [1][2][3][4][5][6]. In low carbon microalloyed steels, the major improvements achievable by TMCP are grain size refinement, uniform final microstructure and distribution of second phase constituents [1,[7][8][9][10]. TMCP is generally designed to obtain an optimum deformation condition (strain, strain rate and temperature) during different rolling passes as well as subsequent cooling processes (i.e.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution During Hot Deformation of a Micro-Alloyed Steel

Mandal

Rajinikanth

Kumar

et al. 2016

Trans Indian Inst Met

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In the present investigation, hot deformation by uniaxial compression of a microalloyed steel has been carried out, using a deformation dilatometer, after homogenization at 1200°C for 20 min up to strains of 0.4, 0.8 and 1.2 at different temperatures of 900, 1000 and 1100°C, at a constant strain rate of 2 s -1 followed by water quenching. In all the deformation conditions, initiation of dynamic recrystallization (DRX) is observed, however, stress peaks are not observed in the specimens deformed at 900 and 1000°C. The specimens deformed at 900°C showed a combination of acicular ferrite (AF) and bainite (B) microstructure. There is an increase in the acicular ferrite fraction with increase in strain at all these deformation temperatures. At high deformation temperature of 1100°C, coarsening of DRXed grains is observed. This is attributed to the common limitations involved in fast quenching of the DRXed microstructure, which leads to increase in grain size by metadynamic recrystallization (MDRX). The strain free prior austenite grains promote the formation of large fraction of both bainite and martensite in the transformed microstructures during cooling. The length and width of bainitic ferrite laths also increases with increase in deformation temperature from 900 to 1100°C and decrease in deformation strain.

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“…Carbon steels are the most important alloys used in petroleum and chemical industries since they account for over 98% of the construction materials. Of all the carbon steels, low carbon steels are widely used in oil / gas storage tanks and transportation pipelines because they display significant ductility, good weldability characteristics and possess reasonable strength and toughness [1][2][3]. However, these welded structures (pipe-lines, off-shore rigs, agitators, pumps, tanks etc.)…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion Behavior of Spirally-welded API X-70 Line-pipe Steel in Acidic and Salt Media

Khan¹,

Seikh²,

Baig³

et al. 2015

mst

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The electrochemical behavior of spirally-welded API steel was investigated at ambient temperature in 3.5% NaCl and 1M H 2 SO 4 solution using linear polarization and electrochemical impedance spectroscopy (EIS) techniques. In order to reveal the corrosion resistance of different regions within the welded joint some significant characterization parameters in linear polarization and EIS curves were analyzed and compared. The surface morphology of corrosion products was also analyzed by scanning electron microscopy (SEM) and energy-dispersive spectrometer (EDS). The results showed that the corrosion resistance of the steel in both solutions at ambient temperature follows the order Weld Metal-Base Metal and HAZ. The corrosion of welded steel in sulfuric acid solution is more than that in NaCl solution.

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Promising tube steels for gas pipelines

Cited by 6 publications

References 1 publication

Hydrostatic pressure effects on corrosion behaviour of X80 steel in artificial sea water

Hydrostatic pressure effects on corrosion behaviour of X80 steel in artificial sea water

Microstructure Evolution During Hot Deformation of a Micro-Alloyed Steel

Electrochemical Corrosion Behavior of Spirally-welded API X-70 Line-pipe Steel in Acidic and Salt Media

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