Fatigue and wear properties of Ti–6Al–4V alloy with Cr/CrN multilayer coating

Yonekura, Daisuke; Fujita, Junki; Miki, Kohei

doi:10.1016/j.surfcoat.2015.05.014

Cited by 65 publications

(14 citation statements)

References 38 publications

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“…It can be seen that the wear mechanism was corrosion wear at the wear loads of 0.5 and 1.0 N. There were strip-worn tracks and small scaly flakes on the worn tracks at the wear load of 1.5 N, as shown in Figure 9 c. The new abrasive particles were always produced in the wear process, and ground the Al coating to form the striped furrows on the Al coating surface, causing the Al particles on the Al coating surface to fall off; the wear mechanism was abrasive wear [ 32 ]. Due to the stress concentration at the contact point between the Al coating surface and the ceramic ball, the fatigue cracks and worn debris appeared under the action of circular stress, and such cracks mainly appeared in the form of scaly flakes, at the same time, the hardness of worn track increased, resulting in fatigue wear [ 33 , 34 , 35 ]. There were flaky debris appearing on the worn track, and the hardness on the worn track was 71.10 HV, larger than the Al coating surface, which was the specific feature of fatigue wear.…”

Section: Analysis and Discussion Of Resultsmentioning

confidence: 99%

Effect of Laser Remelting on Friction-Wear Behaviors of Cold Sprayed Al Coatings in 3.5% NaCl Solution

Dejun

2018

Materials

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A cold sprayed Al coating on S355 structural steel was processed using a laser remelting (LR). The surface and cross-section morphologies, chemical compositions, and phases of as-obtained Al coating before and after LR were analyzed using a scanning electronic microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffractometer (XRD), respectively, and their hardness was measured using a micro-hardness tester. The friction-wear behaviors of Al coating before and after LR in 3.5% NaCl solution were conducted to simulate the sand and gravel scouring on its surface in seawater, the effects of wear loads and speeds on the tribological properties of Al coating were analyzed, and the wear mechanisms under different wear loads and speeds were also discussed. The results show that the Al coating after LR is primarily composed of an Al phase and its hardness is 104.66 HV, increasing 54.70 HV than the cold sprayed Al coating. The average coefficient of friction (COF) of cold sprayed Al coating at the wear load of 0.5, 1.0 and 1.5 N is 0.285, 0.239, and 0.435, respectively, while that after LR is 0.243, 0.227, and 0.327, respectively, decreased by 14.73%, 5.02% and 24.83% compared to the cold sprayed Al coating. The wear rate of cold sprayed Al coating at the wear load of 0.5, 1.0 and 1.5 N is 1.60 × 10−4, 2.36 × 10−4, and 2.40 × 10−4 mm3/m·N, respectively, while that after LR is 1.59 × 10−4, 1.70 × 10−4, and 1.94 × 10–4 mm3/m·N, respectively, decreased by 1%, 32%, and 23%, respectively, indicating that LR has high anti-friction performance. Under the wear load action of 1.0 N, the average COF of laser remelted Al coating at the wear speeds of 300, 400 and 500 times/min is 0.294, 0.279, and 0.239, respectively, and the corresponding wear rate is 1.06 × 10−4, 1.24 × 10−4, and 1.70 × 10−4 mm3/m·N, respectively. The wear mechanism of cold sprayed Al coating is primarily corrosion wear at the loads of 0.5 and 1.0 N, and that at the load of 1.5 N is abrasive wear and fatigue wear; while that after LR is abrasive wear and fatigue wear, with no corrosion wear, showing that LR improves its corrosion and wear resistance.

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Section: Analysis and Discussion Of Resultsmentioning

confidence: 99%

Effect of Laser Remelting on Friction-Wear Behaviors of Cold Sprayed Al Coatings in 3.5% NaCl Solution

Dejun

2018

Materials

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“…In order to prevent the corrosion of studs, an electrodeposited coating of cadmium or zinc-nickel is essential for oil and gas applications, to improve wear and corrosion properties [1,2]. However, coatings influence the fatigue behavior of components [3,4]. Although surface treatments may have some positive impacts on the fatigue strength, such as high mechanical strength, compressive residual stresses, and good adhesion, the coatings frequently reduce the fatigue life of components through the effect on the fatigue crack initiation period [5,6].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of Threaded Components with Cd and Zn-Ni Anticorrosive Coatings

Santos

Fernandes

Velloso

et al. 2021

Metals

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The influence of the electrodeposition of cadmium and zinc-nickel and the stress concentration effect on the fatigue behavior of AISI 4140 steel threaded components were studied. Axial fatigue tests at room temperature with a stress ratio of R = 0.1 were performed using standard and threaded specimens with and without nut interface under base material, cadmium, and zinc-nickel-coated conditions. Finite element analysis (FEA) was used, considering both elastic and elastoplastic models, to quantify the stress distribution and strain for threaded specimens with and without a nut interface. The numeric results were correlated to the experimental fatigue data of threaded components with and without the nut interface, to allow the oil & gas companies to extrapolate the results for different thread dimensions, since the experimental tests are not feasible to be performed for all thread interfaces. Scanning electron microscopy (SEM) was used to analyze the fracture surfaces. The stress concentration factor had a greater influence on the fatigue performance of threaded components than the effect of the Cd and Zn-Ni coatings. The fatigue life of studs reduced by about 58% with the nut/stud interface, compared to threaded components without nuts. The elastoplastic FEA results showed that studs with a stud/nut interface had higher stress values than the threaded specimens without a nut interface. The FEA results showed that the cracks nucleated at the regions with higher strain, absorbed energy, and stress concentration. The substitution of Cd for a Zn-Ni coating was feasible regarding the fatigue strength for threaded and smooth components.

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“…[19][20][21][22] However, the influence and its mechanism of texture patterns on the anti-wear performance or tribological behavior of GCI parts under dry sliding are still unclear, especially when the surface texturing combines with Zr/ZrN composite coatings. [23][24][25][26][27][28][29][30] Therefore, based on previous publications on the wear performance of pits textured GCI parts, 31,32 the same GCI ring model with linearly distributed pits in the radial direction (LDRD) was introduced in this work. The pits texture GCI rings with Zr/ZrN coatings were prepared sequentially by laser marking system and PVD equipment.…”

Section: Introductionmentioning

confidence: 99%

Wear behavior of pits textured grey cast iron rings with Zr/ZrN coatings under dry sliding

Long

Sun

Zhang

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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This study presents the influence of Zr/ZrN coatings on the tribological performance of pits textured grey cast iron parts under dry sliding. A laser marking system and a physical vapor deposition equipment were applied to manufacture pits textured grey cast iron rings combined with Zr/ZrN coatings. A pin-on-disc wear test rig was used to reveal the wear behavior of samples under dry wear condition, at a rotating speed of 200 r/min, with a normal load of 70 N. The wear losses and the worn surfaces of all rings were obtained by an electronic balance and a three-dimensional surface profilometer, respectively. The results show that Zr/ZrN coatings can significantly increase the surface roughness and surface hardness of grey cast iron rings. As a result, Zr/ZrN coatings increase the friction coefficients of all coated GCI rings, and reduce the wear losses of some ones. In this work, when surface texturing combines with Zr/ZrN coatings, the final tribological properties of coated grey cast iron rings may be either improved or deteriorated, depending on surface characteristics, texturing parameters and loads. Compared with the uncoated smooth grey cast iron ring, Zr/ZrN coatings cannot effectively improve the wear behavior of pits textured samples. Among all coated grey cast iron rings, when the diameter of the pit is 0.8 mm, and the distance between pits is 1.25 mm, the pits textured grey cast iron ring can provide the optimal anti-wear performance. This work would provide a valuable reference for the surface design of journal bearings and roller bearings.

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Fatigue and wear properties of Ti–6Al–4V alloy with Cr/CrN multilayer coating

Cited by 65 publications

References 38 publications

Effect of Laser Remelting on Friction-Wear Behaviors of Cold Sprayed Al Coatings in 3.5% NaCl Solution

Effect of Laser Remelting on Friction-Wear Behaviors of Cold Sprayed Al Coatings in 3.5% NaCl Solution

Fatigue Analysis of Threaded Components with Cd and Zn-Ni Anticorrosive Coatings

Wear behavior of pits textured grey cast iron rings with Zr/ZrN coatings under dry sliding

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