Ultrasonic cavitation erosion of gas nitrided Ti–6Al–4V alloys

Mitelea, Ion; Dimian, E.; Bordeaşu, Ilare; Crăciunescu, Corneliu Marius

doi:10.1016/j.ultsonch.2014.01.005

Cited by 42 publications

(14 citation statements)

References 14 publications

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“…The surface morphology shown in Figure 8(d) is similar to that of the Ti-6Al-4 V specimen eroded owing to cavitation. 31 It is seen in Figure 8(d) that some original surface elements that have not been eroded are still discernable. Relative to aluminum and copper alloy specimens, the titanium specimens exhibit high resistance to cavitation erosion.…”

Section: Resultsmentioning

confidence: 96%

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Opare

Kang

Xiao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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To investigate the response of material to cavitation erosion, a comparative work was carried out on three materials, aluminum, copper alloy and titanium. Ultrasonic cavitation erosion was produced as the specimen was submerged in the deionized water. Within a cavitation erosion period of 120 min, the cumulative mass loss was measured at certain time intervals. Surface structure and cavitation damage patterns were observed for the three materials. Microhardness was measured and compared. The results indicate that the cumulative mass loss of aluminum is the highest among the three materials, while the slightest material removal is associated with titanium, which is still in the initial stage of cavitation erosion after 120 min of cavitation erosion. The surface of the aluminum specimen is eroded rapidly after the cavitation erosion commences. Large erosion pits dominate the eroded surface as the cavitation erosion progresses. The surface of the titanium specimen manifests needle-like erosion pits and cleavage cracks. Even at the later stage of the cavitation erosion, non-eroded surface elements are identifiable. The cavitation erosion pattern on the copper alloy specimen surface is related to the twin-phase crystal structure and large erosion pits are produced at the later stage of cavitation erosion. The highest resistance to the cavitation erosion of titanium is related to the close-packed hexagonal structure and the weak slip effect associated.

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Section: Resultsmentioning

confidence: 96%

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Opare

Kang

Xiao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Nitriding proved to be a solution to further improve surface properties based on microstructural modifications [ 14 , 15 ], while the depth of the nitrided layer and the mechanical characteristics of the core can be selected in order to improve the response to contact stresses [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…The composition of Nimonic alloys appears to influence the austenite that, according to Eliasen et al [ 20 ], was present in Nimonic 80, 90, and 100 alloys. However, the technical literature is quite scarce in terms of data regarding the cavitation erosion behaviour of the nitrided layers of steels and non-ferrous alloys [ 13 , 14 , 15 , 16 , 17 ]. There are contradictory results related to the effects of nitriding on the cavitation, mainly due to the original microstructure of the nitrided material, due to the presence of the chemical combinations zones and the types of nitrides formed in the surface layer.…”

Section: Introductionmentioning

confidence: 99%

Cavitation Resistance, Microstructure, and Surface Topography of Plasma Nitrided Nimonic 80 A Alloy

et al. 2022

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Cavitation erosion of structural materials is a form of wear damage that affects the performance and life of components used in the aerospace, nuclear, and automotive industries, leading to an increase in the frequency of maintenance operations and redesign costs. The cavitation erosion behaviour of the nickel-based superalloy, Nimonic 80 A, was investigated using a piezoceramic crystal vibrator, according to the requirements of ASTM G32-2016. The results showed that plasma nitriding leads to a reduction in the mean erosion penetration depth by approximately ten times and of the erosion rate by the order of six times, compared to the solution heat-treated samples. Typical topographies of cavitation-eroded surfaces show a preferential degradation of the grain boundaries between the γ solid solution phases, of the twins’ boundary, and of the interface between the precipitated particles and the γ solid solution matrix. In the nitrided samples, the cracking initiation is determined by nitride particles, which are hard and brittle. Due to the high mechanical strength of the solid solution γ with the fcc crystal lattice, the appearance of the cavitation surface is uniform, and the fracture has a ductile character.

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“…Cavitation erosion is a common mode of material degradation in hydrodynamic systems that caused by the fluctuation of pressure, and it usually impacts on the components as a micro-jet or shock wave [1,2]. It also happens on the surface of the flow-handling components such as hydraulic turbines, rudder, ship propellers, and steel piles of offshore drilling platforms in seawater environment [3].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic cavitation erosion of high-velocity oxygen-fuel (HVOF) sprayed near-nanostructured WC–10Co–4Cr coating in NaCl solution

Hong

Zhang

et al. 2015

Ultrasonics Sonochemistry

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The high-velocity oxygen-fuel (HVOF) spraying process was used to prepare near-nanostructured WC-10Co-4Cr coating. The cavitation erosion behavior and mechanism of the coating in 3.5 wt.% NaCl solution were analyzed in detail. The results showed that the amorphous phase and WC grain were present in the coating. The cavitation erosion resistance of the coating was about 1.27 times that of the stainless steel 1Cr18Ni9Ti under the same testing conditions. The effects of erosion time on the microstructural evolution were discussed. It was revealed that cracks initiated at the edge of pre-existing pores and propagated along the carbide-binder interface, leading to the pull-out of carbide particle and the formation of pits and craters on the surface. The main failure mechanism of the coating was erosion of the binder phases, brittle detachment of hard phases and formation of pitting corrosion products.

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Ultrasonic cavitation erosion of gas nitrided Ti–6Al–4V alloys

Cited by 42 publications

References 14 publications

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Cavitation Resistance, Microstructure, and Surface Topography of Plasma Nitrided Nimonic 80 A Alloy

Ultrasonic cavitation erosion of high-velocity oxygen-fuel (HVOF) sprayed near-nanostructured WC–10Co–4Cr coating in NaCl solution

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