Correlation between evolution of surface roughness parameters and micropitting of carburized steel under boundary lubrication condition

Roy, Sougata; White, Derek; Sundararajan, Sriram

doi:10.1016/j.surfcoat.2018.05.083

Cited by 22 publications

(11 citation statements)

References 21 publications

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“…After 10 million cycles, most of the asperities are smoothed, while the macro waviness remains. This agrees with the surface topography measured by Roy et al [37]. Figure 9c shows the simplified stress spectra.…”

Section: The Effect Of Mild Wearsupporting

confidence: 89%

A Micropitting Study Considering Rough Sliding and Mild Wear

2019

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Micropitting is a typical surface contact fatigue in rolling–sliding contact. The kinematic sliding is of great significance in the initiation and progression of micropitting. A numerical surface fatigue model considering rolling–sliding contact and surface evolution is developed based on mixed-EHL (elastohydrodynamic lubrication) theory, rainflow cycle counting method and Archard’s law. Surface evolution is evaluated using Archard’s wear law based on measured teeth surface topography. Surface damage is determined via the Palmgren–Miner line rule and Goodman diagrams. The effect of rolling speed and surface roughness are discussed in detail. Results show that stress micro-cycles are introduced by rough sliding in the rolling–sliding contact. The mild wear reduces the height of asperities, the maximum pressure and alleviates subsurface stress concentration. For rolling–sliding contact, the faster moving surface dominates the composite height of asperities, then decides the fluctuations of pressure, as well as stress ranges. The combination of surface topography should be considered in the surface design.

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Section: The Effect Of Mild Wearsupporting

confidence: 89%

A Micropitting Study Considering Rough Sliding and Mild Wear

2019

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“…Recently, it has been shown in Ref. [36] that S al varies significantly during rolling contact fatigue. Figure 20 shows the variation of S al with sliding time.…”

Section: Effect Of Load On Topography Parametersmentioning

confidence: 99%

The correlation between friction coefficient and areal topography parameters for AISI 304 steel sliding against AISI 52100 steel

Prajapati

Tiwari

2020

Friction

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Dry wear experiments provide an insight detail on how severely contacting surfaces change under unlubricated sliding condition. The theory of dry sliding wear is used for understanding mixed-lubrication regime in which asperity interactions play a significant role in controlling of the friction coefficient (f). The purpose of this work is to study the tribological behavior of AISI 304 steel in contact with AISI 52100 steel during wear. Both materials are used in rolling element bearings commanly. Experiments are carried out using a pin-on-disc tribometer under dry friction condition. The areal (three dimensional, 3D) topography parameters are measured using a 3D white light interferometer (WLI) with a 10× objective. After wear tests, wear mechanisms are analyzed utilizing scanning electron microscope (SEM). Factorial design with custom response surface design (C-RSD) is used to study the mutual effect of load and speed on response variables such as f and topography parameters. It is observed that the root mean square roughness (Sq) decreases with an increase in sliding time. Within the range of sliding time, Sq decreases with an increase in the normal load. Within the range of sliding speed and normal load, it is found that Sq, mean summit curvature (Ssc), and root mean square slope (Sdq) are positively correlated with f. Whereas, negative correlation is found between f and correlation length (Sal), mean summit radius (R), and core roughness depth (Sk).

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“…Using a finite element elastic plastic contact model [4], Wang et al [5] found that rolling contact fatigue decreases as tensile stress increases. Roy et al [6] found that greater retention of austenite leads to reduce micro-pitting with the same cycles. In addition, studies on the microstructure of the gear surface [7][8][9] have revealed that the anisotropy and randomness of the crystal plasticity result in variations in the crack initiation position.…”

Section: Introductionmentioning

confidence: 99%

A Novel Tooth Tip Relief Method for Reducing Micro-Pitting of Spur Gears

Liang

Zuo

et al. 2021

Preprint

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Micro-pitting is a common fatigue failure mode of spur gears. To reduce it, this paper proposes a novel tooth tip relief method. Gear meshing simulation is firstly performed considering the actual contact path, showing that there are four Hertz contact stress peaks in the transition areas of the tooth flank. Equations are then developed for the novel tooth tip relief method: one focuses on the smooth transition between the involute profile and the tip relief region, the other on the smooth transition between the tip relief region and the tooth tip. The results of curvature radius and Hertz contact stress show that the proposed novel method can effectively reduce the Hertz contact stress peaks, which indicates this tip relief method could benefit for reducing the micro-pitting. Finally, both wear simulations and bench tests are conducted, verifying the effectiveness of the proposed method for reducing the micro-pitting of spur gears.

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Correlation between evolution of surface roughness parameters and micropitting of carburized steel under boundary lubrication condition

Cited by 22 publications

References 21 publications

A Micropitting Study Considering Rough Sliding and Mild Wear

A Micropitting Study Considering Rough Sliding and Mild Wear

The correlation between friction coefficient and areal topography parameters for AISI 304 steel sliding against AISI 52100 steel

A Novel Tooth Tip Relief Method for Reducing Micro-Pitting of Spur Gears

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