Cavitation Erosion Damage Mechanism of a Duplex Stainless Steel Having a Ferrite-Austenite-Sigma-Phase Triplex Microstructure

Ai, Wenji; Lo, K.H.; Li, Xiang; Kwok, Chi Tat; Pan, Hui

doi:10.1007/s11665-020-04807-9

Cited by 8 publications

(2 citation statements)

References 36 publications

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“…The cavitation erosion of the duplex stainless steel is initiated at the ferrite, and then the ferrite phase is peeled off; meanwhile, the austenite is deformed with slips in the grains [ 128 , 129 , 130 ]. The more serious cavitation erosion of the ferrite compared to the austenite is caused by the higher strain-rate sensitivity of the ferrite [ 131 , 132 ]. The superior duplex stainless steel with higher yield strength, ultimate tensile strength, and strain hardening rate has better cavitation erosion resistance than ordinary duplex stainless steel, and superior duplex stainless steel tends to replace ordinary duplex stainless steel [ 133 ].…”

Section: Cavitation Erosion On Valves and Pumpsmentioning

confidence: 99%

A Review of Cavitation Erosion on Pumps and Valves in Nuclear Power Plants

Gao,

Guo,

2024

Materials

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The cavitation erosion failure of pumps or valves induces the low efficiency and reduced service life of nuclear reactors. This paper reviews works regarding the cavitation erosion of pumps and valves in the nuclear power industry and academic research field. The cavitation erosion mechanisms of materials of pumps and valves are related to the microstructure and mechanical properties of the surface layer. The cavitation erosion resistance of austenitic stainless steel can be ten times higher than that of ferritic steel. The cavitation erosion of materials is related to the hardness, toughness, and martensitic transformation capacity. Erosion wear and erosion–corrosion research is also reviewed. Erosion wear is mainly influenced by the hardness of the material surface. Erosion–corrosion behavior is closely connected with the element composition. Measures for improving the cavitation erosion of pumps and valves are summarized in this paper. The cavitation erosion resistance of metallic materials can be enhanced by adding elements and coatings. Adhesion, inclusion content, and residual stress impact the cavitation erosion of materials with coatings.

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Section: Cavitation Erosion On Valves and Pumpsmentioning

confidence: 99%

A Review of Cavitation Erosion on Pumps and Valves in Nuclear Power Plants

Gao,

Guo,

2024

Materials

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“…Zinc salicylate (ZnSal) is regarded as an alternative antifouling coating that is employed to prevent fouling [19]. Moreover, high-quality steel should conquer corrosion [20,21], erosion [22] and fouling [23]. However, the slow deposition rate and large amounts of sediment restrict the good corrosion resistance of carbon steel as well as the difficult morphology control, expensive cost and incompact deposition parameters, leading to poor anticorrosion effects on steel.…”

Section: Introductionmentioning

confidence: 99%

Anticorrosive behavior assessment of electrodeposited zinc salicylate coating on carbon steel

Yuan

et al. 2022

J. Phys.: Conf. Ser.

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The study focuses on the evaluation of a novel composite coating obtained from zinc salicylate (ZnSal). Ion distributions of salicylic acid and zinc(II) were surveyed at various acidities, and pH 9.5 was selected for the direct current electrodeposition of ZnSal/K2SO4 on carbon steel substrate. The surface morpholgy of the ZnSal-steel coating was revealed by scanning electron microscopy, and compact deposited films with dendrite structures (specific surface area 247 m2 g−1, type-H3 BET hysteresis loop at relative pressures from 0.4 to 1.0) could be formed within 25-min plating time. NSST was conducted, and the test duration was 120 h. Preliminary assays were employed to assess its anticorrosive performance in salt spray, and the corrosion rate of the steel plates exhibited a nonlinear relationship with the exposure time. The results showed that the ZnSal-steel had a low corrosion rate <0.11 μm h−1, thereby increasing the potential of ZnSal composites on actual carbon steel for anticorrosive coatings.

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