Study of Cavitation Erosion Pits on 1045 Carbon Steel Surface in Corrosive Waters

Karrab, S. A.; Doheim, M.A.; Aboraia, Mohammed S.; Ahmed, Sabah M.

doi:10.1115/1.4005646

Cited by 18 publications

(8 citation statements)

References 19 publications

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“…The characteristic features of these pits are the presence of two parts: a cavity at the pit centre and a rough circular band around the cavity, which is labeled 1, as well as circular rings, labeled 2. The same shape for these pits has been observed before in the literature on corrosion tests [19][20][21][22][23]. The comet tails were formed in opposite direction to the rotation of the specimen.…”

Section: Morphology Of Pitting Corrosionsupporting

confidence: 79%

Image Processing Techniques Applied for Pitting Corrosion Analysis

Alkanhal¹

2014

IJRET

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In order to study the behavior of the early stage of pitting corrosion, an image analysis based on discrete wavelet packet transform and fractals was used. Image feature parameters were extracted and analyzed to characterize the pitting corrosion development with test time. It was found that the feature parameters: Shannon entropy, energy, fractal dimension and intercept increased with the test time. Therefore the image processing techniques were promising and effective tools to analyze and detect the pitting corrosion.

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Section: Morphology Of Pitting Corrosionsupporting

confidence: 79%

Image Processing Techniques Applied for Pitting Corrosion Analysis

Alkanhal¹

2014

IJRET

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“…Most notably, Cr-Ni-Mo-1.0Ti alloy had irregularly shaped crater pits with the size of about 400 µm in width. This damage type happens due to the coalescence of pits, giving rise to elimination of grains [15]. The roughness for Cr-Ni-Mo-0.5Ti and Cr-Ni-Mo-0.7Ti alloy were determined to be 0.5 µm and Cr-Ni-Mo-1.0Ti to be 1.3 µm, showing an agreement with surface roughness of some metallic materials in vibratory cavitation-erosion [16].…”

Section: Resultssupporting

confidence: 59%

“…It is generally acknowledged that the cavitation behavior of stainless steels significantly varies with different microstructures. In the case of austenitic stainless steels with austenite single phase, plastic deformation occurs during the beginning of cavitation-erosion process and slip lines appear in the austenite grains, and then material is removed from slip lines in austenite grains by ductile fracture [15]. Bregliozzi et al distinguished cavitation erosion process of austenitic stainless steel into three stages: (1) initiation of cavitation attack at the grain boundaries and slip bands, resulting in the formation of surface undulations, (2) crack growth from the defects which represent origins of stress concentration, (3) material removal by ductile fracture mechanism [2].…”

Section: Resultsmentioning

confidence: 99%

“…According to their study, stainless steels only suffered pure mechanical erosion under cavitation, and thus synergism by corrosion plays a negligible role for stainless steels [18]. In this study, the growth of micropit into crater-shaped damage is considered to be due to shockwave from micro-jet impact and collapse of bubble clustering, thereby mechanical erosion being prevalent during cavitation-erosion process, rather than synergism of cavitation erosion and corrosion [15].…”

Section: Morphology/ Profilementioning

confidence: 99%

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Sensitizing Effects of Ti Alloying Contents on Damage Behavior of Austenitic Stainless Steel Exposed to Ultrasonic Vibratory Cavitation

Lee

Kim

2016

Acta Phys. Pol. A

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The cavitation damage characteristics of austenitic stainless steel with different concentrations of Ti were investigated. The microstructure of the alloys was observed with optical microscope to identify its correlation with cavitation resistance. Hardness of the alloys was measured to examine its contribution to cavitation damage. It was found that the microstructure played a more significant role in cavitation damage behavior of austenitic stainless steel with Ti than the hardness. The findings in this study revealed that Ti addition in austenitic stainless steel may present either a beneficial or detrimental effect on cavitation damage behavior, depending on the microstructural characteristics. In particular, Ti content of 1.0% represented the most deteriorated cavitation characteristics due to the formation of relatively coarse precipitates. Therefore, control of Ti concentration is essential for marine application of austenitic stainless steel.

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“…Essentially, both cavitation inception and erosion are related to the liquid medium surrounding the ultrasonic horn and the target surface . Chemical ingredients of the liquid medium might react with the elements of the specimen, as results in the modification of the target surface.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cavitation erosion resistance of copper alloy in different liquid media

Liu

Zhang

Kang

2017

Materials & Corrosion

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To evaluate the influence of liquid property on cavitation erosion resistance of the copper alloy, an experimental investigation is performed with the ultrasonic vibratory apparatus. Liquid media of deionized water, tap water, and 3.5 wt.% NaCl solution are selected. The cumulative mass loss rate and microhardness are measured and surface morphology observed at different erosion time. The results show that the cumulative mass loss increases consistently with the erosion time, and the highest cumulative mass loss rate is witnessed in tap water. The erosion time at which the maximum cumulative mass loss rate is reached is the shortest with the 3.5 wt.% NaCl solution. Surface morphology testifies the rapid evolution of small cavitation erosion pits into large eroded area in the specimen surface submerged in the deionized water and tap water. In comparison, the specimen surface in the 3.5 wt.% NaCl solution is featured by insignificant cavitation erosion, and plastic deformation remains predominant for a long erosion time. The initiation and development of micro‐cracks are remarkable in tap water. In the 3.5 wt.% NaCl solution, the progression of cavitation erosion is mitigated relative to the other two cases, and cavitation erosion pits remain the predominant constituents of the erosion pattern as the erosion time increases. The hardening layer is found beneath the specimen surface, and the 3.5 wt.% NaCl solution is responsible for the thickest hardening layer. As cavitation erosion develops, the softening phenomenon is salient with consistent flaking off of surface layers.

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Study of Cavitation Erosion Pits on 1045 Carbon Steel Surface in Corrosive Waters

Cited by 18 publications

References 19 publications

Image Processing Techniques Applied for Pitting Corrosion Analysis

Image Processing Techniques Applied for Pitting Corrosion Analysis

Sensitizing Effects of Ti Alloying Contents on Damage Behavior of Austenitic Stainless Steel Exposed to Ultrasonic Vibratory Cavitation

Evaluation of cavitation erosion resistance of copper alloy in different liquid media

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