Corrosion Behavior of High-Strength Steel for Flexible Riser Exposed to CO2-Saturated Saline Solution and CO2-Saturated Vapor Environments

Zhang, Da-Zheng; Gao, Xiuhua; Du, Linxiu; Wang, Hong-Xuan; Liu, Zhen-Guang; Yang, Ningning; Misra, R.D.K.

doi:10.1007/s40195-018-0825-2

Cited by 12 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a marked decrease in the corrosion rate between 1 d and 3 d. At 4 d and 5 d, the corrosion rate is low. As corrosion products formed on the entire surface, the active corrosion reaction is inhibited, and the corrosion rate decreased [17]. The corrosion rate equation is fitted as follows [5]:…”

Section: Corrosion Rate Analysismentioning

confidence: 99%

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

Yuan

Chen

et al. 2020

Metals

View full text Add to dashboard Cite

When alumina is produced by the Bayer process with high-sulfur bauxite, the sulfur would strongly corrode the 12Cr1MoV steel made heat exchanger. This study investigated the initial corrosion behavior of the 12Cr1MoV steel exposed to a thiosulfate-containing sodium aluminate (TCSA) solution under the evaporation conditions of alumina production. The obtained corrosion rate equation is V = 6.306·t·exp(−0.71). As corrosion progressed, with the corrosion product film growing, the corrosion current density declines slowly, and the corrosion resistance of the steel is increased. At 1–3 days, the corrosion product film consisted of FeO, Fe2O3, and FeOOH. S2O32− lead to corrosion in local areas of the steel and pits appeared. AlO2− is transformed into Al(OH)3 and filled in the corrosion pits. At 4 and 5 days, Fe3O4 is generated in the outermost layer, and Al(OH)3 is shed from the corrosion pits. The corrosion mechanism of 12Cr1MoV steel in a TCSA solution is proposed based on the experimental results.

show abstract

Section: Corrosion Rate Analysismentioning

confidence: 99%

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

Yuan

Chen

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…In a saturation state, the distribution of salt between steam and water depends on the distribution coefficient. [ 31 ] Bai et al [ 32 ] paid attention to the corrosion characteristic of 15CrMo exposed to saline (Na 2 SO 4 ) steam. Zhu and Zhang [ 33 ] conducted a study of passive film formation on an Fe‐based alloy in a sodium sulfate solution.…”

Section: Introductionmentioning

confidence: 99%

A study on corrosion mechanism of 15CrMo in saline (Na₂SO₄) steam at high temperature

Bai

Deng

Che

2022

Materials & Corrosion

View full text Add to dashboard Cite

To clarify the corrosion mechanism of 15CrMo in saline (Na 2 SO 4 ) steam, the experiments were conducted on a novel setup. The samples were analyzed by scanning electron microscope and X-ray photoelectron spectroscopy. The results indicate that insoluble sulfide, Fe x S y , would form on the gas-phase corroded surface while it would not occur on the liquid-phase corroded surface.The salinity of water/steam has a destructive effect on hydrogen bonds. Compared with deionized steam/water, salinity accelerates the corrosion of steel in two ways electric current intensification in primary cell and energy promotion of the solution system. FeOOH does not change obviously with the increase of salt concentration. The relative variation values of FeOOH content with salt concentration are only 2.43% (gas) and 3.40% (liquid), respectively. Besides, the FeOOH content on the liquid-phase corroded surface is much greater than that on the gas-phase corroded surface regardless of the salt concentration.

show abstract

“…Armor layer is the core layer of a flexible marine riser, which largely determines the service performance of the flexible riser. Therefore, high-strength low-alloy steel is used as the armor layer to ensure the mechanical properties of the flexible marine riser [4,5]. The flexible marine riser is subjected to the effect of gravity and the impact of the ocean current or wave during its service [6,7].…”

Section: Introductionmentioning

confidence: 99%

Fatigue fracture behavior of high-strength low-alloy steel for flexible marine riser in the high cycle fatigue regime

Zhang

Gao²,

Wang³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

The relationship between microstructure, stress ratio, and fatigue fracture behavior of high-strength steel for flexible marine risers was investigated by microstructure characterization and fatigue test. The microstructure characteristic, S-N curve, fatigue fracture morphology, and fatigue crack morphology after quenching and tempering treatment and cyclic heat treatment, respectively, were evaluated. The results revealed that after cyclic heat treatment, the microstructure was refined considerably, the grain boundary density and the content of high-angle grain boundary increased, which inhibited the fatigue crack propagation and improved the fatigue strength. The average stress increased by increasing the stress ratio, which promoted the crack initiation and propagation; consequently, the fatigue strength and fatigue life of the tested steel decreased.

show abstract

Corrosion Behavior of High-Strength Steel for Flexible Riser Exposed to CO2-Saturated Saline Solution and CO2-Saturated Vapor Environments

Cited by 12 publications

References 1 publication

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

A study on corrosion mechanism of 15CrMo in saline (Na₂SO₄) steam at high temperature

Fatigue fracture behavior of high-strength low-alloy steel for flexible marine riser in the high cycle fatigue regime

Contact Info

Product

Resources

About

Corrosion Behavior of High-Strength Steel for Flexible Riser Exposed to CO2-Saturated Saline Solution and CO2-Saturated Vapor Environments

Cited by 12 publications

References 1 publication

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution

A study on corrosion mechanism of 15CrMo in saline (Na2SO4) steam at high temperature

Fatigue fracture behavior of high-strength low-alloy steel for flexible marine riser in the high cycle fatigue regime

Contact Info

Product

Resources

About

A study on corrosion mechanism of 15CrMo in saline (Na₂SO₄) steam at high temperature