Friction and wear reductions under slip-rolling contact through chemically reactive tribofilm generation during pre-conditioning of steel alloys

Burbank, John; Woydt, Mathias

doi:10.1016/j.wear.2015.06.006

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…Mo element is more efficient in increasing the hardenability. Besides, Mo element can reduce the temper brittleness caused by other elements [13,14]. Therefore, it can be deduced that steel J and S are propitious to generate martensite.…”

Section: Experimental Methodsmentioning

confidence: 99%

Effect of Microstructure on Wear Resistance of Low-Alloy High-Strength Wear-Resistant Steel

Wu¹

2019

International Journal of Electrochemical Science

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In this paper, microstructure, corrosion resistance and wear resistance of low-alloy high-strength wearresistant steels of NM400 and KN400X were studied. It is found that the wear resistance of these steels differed from each other significantly although their chemical compositions were similar, depending on microstructure, grain size and non-metallic inclusions. The results of the tests on corrosion resistance and wear resistance showed that the KN400X steel had the best performance in both properties. Lower content of non-metallic inclusions resulted in more uniform and compact microstructure, which together with better corrosion resistance led to better abrasive wear property.

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Section: Experimental Methodsmentioning

confidence: 99%

Effect of Microstructure on Wear Resistance of Low-Alloy High-Strength Wear-Resistant Steel

Wu¹

2019

International Journal of Electrochemical Science

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“…Lubricants 2020, 8, x FOR PEER REVIEW 2 of 14 important approach to both reduce carbon emissions and increase efficiencies, especially in the automotive industry [4,5]. However, recent advances in material composition, ceramics, and coatings have proved adept at slowing this accelerated degradation and improving the tribological properties of the material.…”

Section: Newly Developed Tribometer For Rolling Contactsmentioning

confidence: 99%

“…In systems that involve the use of bearings and gear components, the pursuit of lightweight design has increased torque and Hertzian contact stresses, shortening the lifetime of these parts without proper lubrication [2,3]. Reducing the size of tribological components is seen as an important approach to both reduce carbon emissions and increase efficiencies, especially in the automotive industry [4,5].…”

Section: Introductionmentioning

confidence: 99%

Test Modes for Establishing the Tribological Profile under Slip-Rolling

Patzer¹,

Woydt²,

Shah³

et al. 2020

Lubricants

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The complex nature of slip-rolling contacts in many applications such as gear tooth flanks, rolling bearings, and heavy machinery often makes determining the friction and wear properties, as well as the fatigue resistance, of tribosystems difficult. The establishment of the tribological profile of a tribocouple under high Hertzian contact pressure and under slip-rolling will allow for the measurement and comparison of friction and wear coefficients as well as slip-rolling resistance by continuously monitoring the wear rate, coefficient of friction, temperature, oil film thickness, and/or electrical contact resistance using high-resolution signal analysis (HRA). A twin disc system can provide insight into the adhesive behavior of material and lubricant products such as alternative base oils and additives, ceramics, alloys, and thin film coatings. The strength and endurance of these products are often characterized through fatigue and resistance tests, which apply high Hertzian contact pressures to the rolling contact until seizure or failure is obtained. The further observation of the formation of tribofilms on the surface of contact yields information about the reactivity and thermochemical properties of additives. This review aims to illustrate how the implementation of different screening methodologies can be used as a meaningful tool for assessing the aforementioned tribological profile properties for the development of slip-rolling tribosystems.

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“…By honing, the micro- and macrostructure are specifically adapted with a focus on the surface integrity of the workpiece material including the boundary layer constitution (Karpuschewski et al , 2016a). In addition to finishing processes, especially the mechanisms that take place during the engine running-in within the first few operating hours are decisive for the friction and wear behaviour of a tribological system (Burbank and Woydt, 2015). Taking into account the anti-wear additives of the engine oil, the temperatures that occur and the initial load during the engine running-in, thin reaction layers are built on the honing structures of the cylinder running surface according to theories of forming a “third body” (Dienwiebel and Pöhlmann, 2007).…”

Section: Introductionmentioning

confidence: 99%

Resource-efficient piston ring/cylinder liner pairing

Risse

Schorgel

Bartel

et al. 2019

ILT

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Purpose The purpose of this paper is to investigate the influence of different finish processes on the surface integrity and tribological behaviour of cylinder running surfaces for internal combustion engines. Design/methodology/approach The cutting force during finishing and the resulting surface topography was measured for a variety of cylinder running surfaces made of EN-GJL-250, EN-GJV-400 and thermal sprayed aluminium alloy. A separate conditioning tool was developed and tested. Different analysis methods (SEM, EDX, SIMS and FIB) for the characterisation of the boundary conditions were used. By an oscillating friction wear test and a single cylinder floating liner engine, the running-in and frictional behaviour was rated. Findings It was shown that honing with low cutting forces and silicon carbide cutting material decreases the friction in operation. The characteristics of the boundary layers after running-in depend on the finish machining process. A preconditioning with a separate tool can adjust the boundary layer and running-in behaviour. Based on the experimental results, a multi-body and computational fluid dynamics simulation was developed for the floating liner engine. Originality/value The results demonstrate the potential of finishing with low process forces to reduce friction and the need for a complete consideration of the tribological system piston ring/cylinder liner surface.

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Friction and wear reductions under slip-rolling contact through chemically reactive tribofilm generation during pre-conditioning of steel alloys

Cited by 11 publications

References 33 publications

Effect of Microstructure on Wear Resistance of Low-Alloy High-Strength Wear-Resistant Steel

Effect of Microstructure on Wear Resistance of Low-Alloy High-Strength Wear-Resistant Steel

Test Modes for Establishing the Tribological Profile under Slip-Rolling

Resource-efficient piston ring/cylinder liner pairing

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