Lubricated fretting wear of a high-strength eutectoid steel rope wire

McColl, I.R.; Waterhouse, R.B.; Harris, S.J.; Tsujikawa, Masato

doi:10.1016/0043-1648(95)06616-0

Cited by 72 publications

(25 citation statements)

References 10 publications

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“…Along with copper and oxygen, very limited carbon can also be detected on the wear track, which may be attributed to the remnant of the oil. The phenomenon of transfer during fretting wear under oil-lubricated condition is usually encountered in many literatures [8,16,17]. In our tests, the widely scattered patches elongating along the slip direction on the WC-Co ball are observed under all the applied loads, as a result of material transfer from the counter disc after fretting against the SMAT Cu, as exemplified in Fig.…”

Section: Effect Of Load On Fretting Wear Behavior Of the Smatmentioning

confidence: 90%

Fretting wear behavior of nanocrystalline surface layer of pure copper under oil lubrication

Zhang

Han

2007

Tribol Lett

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Lubricated fretting tests in mineral oil were performed with a nanocrystalline surface layer on a pure bulk Cu prepared by surface mechanical attrition treatment (SMAT) against a WC-Co ball. It was found that the nanocrystalline surface layer exhibited a markedly enhanced fretting wear resistance and higher friction coefficient relative to the coarse-grained (CG) form. The wear volume of the SMAT Cu is one order of magnitude lower than that of the CG Cu. The friction coefficient of the SMAT Cu increases with an increasing load and frequency, while for the CG Cu, the friction coefficient increases with an increasing fretting frequency up to 100 Hz and thereafter decreases. The higher hardness of the SMAT Cu is suggested to be the main factor causing its improved wear resistance and higher friction coefficient. A discontinuous metal transfer layer can be found on the WC-Co ball only after fretting against the SMAT Cu, which may partly account for the higher wear resistance of the SMAT Cu in comparison with the CG Cu.

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Section: Effect Of Load On Fretting Wear Behavior Of the Smatmentioning

confidence: 90%

Fretting wear behavior of nanocrystalline surface layer of pure copper under oil lubrication

Zhang

Han

2007

Tribol Lett

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“…Kaneta et al [11,12] mentioned that a decrease in amplitude influenced oil film collapse, and then led to wear. McColl's work [13] indicated that the grease lubricant was capable of providing an effective shield around the fretting interface but was easily squeezed out of the main contact area. Zhou et al [14] suggested that the ratio of the displacement amplitude to the radius of the Hertzian contact area was the most important parameter to affect the coefficient of friction using grease lubricant.…”

Section: Introductionmentioning

confidence: 98%

The Film Behaviors of Grease in Point Contact During Microoscillation

Zhang

et al. 2010

Tribol Lett

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Microoscillation is a typical case of transient motion, which occurs in many machine elements, including rolling or sliding element bearings, cams, and gears. Wear is easy to occur on the surface of such elements, particularly at the end point of the stroke, where the surfaces are momentarily static. In the present work, an experimental investigation is conducted to explore the grease film behavior of point contact lubrication during microoscillation in the case of pure rolling or pure sliding. The technique of relative optical interference intensity was used to monitor the variation of the grease film thickness and the motion of the grease in the contact area through analyzing the captured interferograms. Experimental results indicate that a crescent-shaped grease film can form along the motion direction in the contact area under microoscillation. The grease film is formed in the inlet region, and the film thickness remains while moving in the Hertzian contact area. In the case of pure rolling, the crescent-shaped grease film and the initial entrapped grease film are carried by a tow effect of moving interfaces in the contact area. However, in the case of pure sliding, there are relative motions in the sliding direction at the two interfaces of the grease/ ball and the grease/disk in the Hertzian contact area. The shape of the entrapped grease remains almost unchanged while moving in the Hertzian contact area. During the repetition of microoscillations, the crescent-shaped grease film thickness drops gradually.

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“…Fretting as oscillatory motion with small amplitudes and very low velocity (even at high frequencies) leads to the situation when dynamic fl uid lubrication during sliding is unrealisable. The fretting regimes under dry and lubricated conditions were presented fi rstly in pioneering work of R. B. Waterhouse et al 1,2 As it has been made in earlier studies by Waterhouse, the effect of lubricant on fretting depends on its ability to penetrate into the contact zone, and to recover (if squeezed out) to form boundary fi lm and reduce the oxygen access. The rate of replenishment of oxygen to the surface is proportional to the diffusivity of the lubricant, which is approximately inversely proportional to the viscosity.…”

Section: Introductionmentioning

confidence: 99%

A friction energy approach to quantifying lubrication under fretting sliding

Kolodziejczyk¹,

Fouvry²,

Morales-Espejel³

2010

Lubrication Science

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The problem of a proper lubrication under low-speed small oscillatory movement can be a decisive factor for the reliability of various components. There is a need to characterise the lubricious behaviour of the interface under oil-bath fretting wear conditions for ball bearing applications. Fast and reliable methods to quantify this behaviour for broad range of mechanical conditions are proposed and validated. Pure sliding reciprocation induces mixed lubrication mode. It was found that transient fi lm profi les depend on the nonNewtonian response of the oils and the type of motion. Running-in period has a crucial importance for the tribofi lm formation, and is a result of the interplay of the oil-sliding surfaces interface and is directly connected with the total energy dissipated from the contact region. The stability of structured tribofi lm in steady-state period relies on the balance between the competitive processes: replenishment of the oil to the contact and ejection of the oil pending the oscillatory movement. The phenomenon of starvation was observed when the system was moved away from dynamical equilibrium and the growth of the dissipated energy was spotted. A proposed methodology provides the evaluation of the lubrication properties of the oil in a quantitative way.

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Lubricated fretting wear of a high-strength eutectoid steel rope wire

Cited by 72 publications

References 10 publications

Fretting wear behavior of nanocrystalline surface layer of pure copper under oil lubrication

Fretting wear behavior of nanocrystalline surface layer of pure copper under oil lubrication

The Film Behaviors of Grease in Point Contact During Microoscillation

A friction energy approach to quantifying lubrication under fretting sliding

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