Local Flow-Accelerated Corrosion of Welds in NPP Power Unit Pipelines: Phenomenon Mechanism Features and Measures to Prevent Damage

Tomarov, G. V.; Shipkov, A. A.; Komissarova, T. N.

doi:10.1134/s0040601519020083

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Since most low-alloy high-strength steel needs to be welded during use, welding quality directly affects the properties of HSAL steel (Zhang et al, 2019). The weld joint of HSAL consists of a weld zone, heat-affected zone, and base metal (base metal) zone (Tomarov et al, 2019). The corrosion resistance of HSAL weld metal with different alloy compositions is closely related to its microstructure.…”

Section: Discussionmentioning

confidence: 99%

Corrosion resistance analysis of the weld metal of low-alloy high-strength steel considering different alloy compositions

Liang

Peng²,

Zhao³

et al. 2022

Front. Mater.

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In order to find the low-alloy high-strength steel welded with the strongest corrosion resistance, the corrosion resistance of HSAL weld metal was studied by considering different alloy compositions. Corrosion resistance of alloy compositions of 460, 690, and 980 MPa was analyzed in an atmospheric environment and simulated seawater environment, respectively. The results of the corrosion weight gain test, weight loss test, and Kelvin probe test showed that the HSAL weld metal with 980 MPa alloy composition has the best corrosion resistance in an atmospheric environment. Through seawater immersion and electrochemical testing, it was found that the HSAL weld metal with 980 MPa alloy composition had good corrosion resistance in a simulated seawater environment, the HSAL with 690 MPa alloy composition had medium corrosion resistance, and the HSAL with 460 MPa alloy composition had the lowest corrosion resistance. The corrosion resistance of the weld zone is the best and that of the heat-affected zone is the worst; these findings may be helpful for research in related fields.

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Section: Discussionmentioning

confidence: 99%

Corrosion resistance analysis of the weld metal of low-alloy high-strength steel considering different alloy compositions

Liang

Peng²,

Zhao³

et al. 2022

Front. Mater.

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“…Presently, most research on FAC is generally carried out under the liquid phase and focused on the nuclear power plant pipeline. [23][24][25][26][27][28] However, FAC in the natural gas pipeline usually occurs in the wet gas medium, and its corrosion environment is very different from that in the liquid phase. [29][30][31] Traditional laboratory liquid phase corrosion simulation methods may not be able to obtain the actual corrosion resistance and corrosion resistance mechanism of the material in the wet gas medium.…”

Section: Introductionmentioning

confidence: 99%

Effect of chromium on the corrosion behaviour of low Cr-bearing alloy steel under an extremely high flow rate

Wang

Li³

et al. 2020

RSC Adv.

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Study of CAP1400 secondary pipe wall thinning rate under flow accelerated corrosion

Rao

Kuang

Zhang

et al. 2021

Annals of Nuclear Energy

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Local Flow-Accelerated Corrosion of Welds in NPP Power Unit Pipelines: Phenomenon Mechanism Features and Measures to Prevent Damage

Cited by 4 publications

References 6 publications

Corrosion resistance analysis of the weld metal of low-alloy high-strength steel considering different alloy compositions

Corrosion resistance analysis of the weld metal of low-alloy high-strength steel considering different alloy compositions

Effect of chromium on the corrosion behaviour of low Cr-bearing alloy steel under an extremely high flow rate

Study of CAP1400 secondary pipe wall thinning rate under flow accelerated corrosion

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