Tribological and mechanical properties of Al alloyed bearings

Ünlü, Bekir Sadık; Durmuş, Hülya; Akgün, Selda

doi:10.1016/j.jallcom.2009.07.107

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…Conventional alloys such as iron, aluminium and copperbased alloys are composed of one major element and a few other elements, and the added elements can improve the mechanical capacity of alloys [1][2][3]. However, the addition of elements results in the formation of more complex phases and metal compounds.…”

Section: Introductionmentioning

confidence: 99%

The effect of Mn addition on corrosion behaviour of equiatomic CoCrFeNi high entropy alloys in NaCl solution

Zhang

Zhu

Yuan

et al. 2022

Corrosion Engineering, Science and Technology

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The corrosion behaviour of equiatomic CoCrFeNi and CoCrFeNiMn high entropy alloys manufactured by the vacuum arc melting were studied in 3.5 wt-% NaCl solution. And the reasons for the differences in corrosion resistance were investigated in terms of microstructure, electrochemical behaviour and oxide film. The results show that the two alloys exhibit different corrosion characteristics, with CoCrFeNi alloy displaying typical passivation characteristics and CoCrFeNiMn alloy exhibiting activation behaviour. The CoCrFeNi HEA with compact and protective passive film has lower corrosion current density, larger film resistance and polarisation resistance, meaning a lower corrosion rate and superior corrosion resistance compared with those of CoCrFeNiMn alloy. Moreover, CoCrFeNiMn alloy forms a discontinuous and loose corrosion product film with higher Mn content and lower contents of Cr, Fe and Co compared to the matrix, which decreases its protection performance. The addition of Mn changes the electrochemical behaviour, and higher Mn oxides/hydroxides within oxide film are unfavourable to forming a stable passive film.

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Section: Introductionmentioning

confidence: 99%

The effect of Mn addition on corrosion behaviour of equiatomic CoCrFeNi high entropy alloys in NaCl solution

Zhang

Zhu

Yuan

et al. 2022

Corrosion Engineering, Science and Technology

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“…Therefore, the research on the wear behavior of the crankshaft-bearing pad friction pair of a diesel engine is of significance to provide an evaluation method for the wear performance of the crankshaft-bearing pad friction pair, to master the wear mechanism of different types of bearing pads, and to provide a theory for the wear control of the crankshaft-bearing pad friction pair. It has a long-term significance for improving the design level of the bearing bush of the diesel engine connecting rod and improving the detection and test level between the haft and the bearing bush of the marine engine [5][6][7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Investigation on the tribological property of marine engine bearing

Zeng²,

Yan

2023

J. Phys.: Conf. Ser.

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The marine engine is one of the core devices of the ship. With the continuous progress of science and technology, marine engines are developing towards high power density, and the related tribological problems are more prominent. As one of the most typical friction pairs of marine engines, the crankshaft-bearing bush bears more and more loads and presents a trend of increased wear. By studying the wear behavior of the bearing bush, it is possible to deeply grasp the bearing wear mechanism, speed up the research and development process of the bearing bush, and further improve the wear resistance. In this paper, for the crankshaft-bearing bush pairing pair, a component-level bearing bush friction and wear testing machine is built, and the corresponding test method is established. The binary electroplating bush and an alloy shaft pair are selected for the experiment, and the wear law of the bearing bush is explored.

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“…Aluminium and its alloy have been found to be advantageous in many applications such as aerospace and automotive components due to their excellent resistance to corrosion, good thermal conductivity, low density and moderate cost . However, Al and its alloys are of low hardness and surface chemical inertia and hence are hard to lubricate . These properties limited their use as tribological materials.…”

Section: Introductionmentioning

confidence: 99%

“…1 However, Al and its alloys are of low hardness and surface chemical inertia and hence are hard to lubricate. 2,3 These properties limited their use as tribological materials. For example, lubricated tribology of aluminium-based alloys sliding against iron-based materials is a problem in automotive and metal forming industries.…”

Section: Introductionmentioning

confidence: 99%

The study of tribological properties of laser‐textured surface of 2024 aluminium alloy under boundary lubrication

2012

Lubrication Science

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The tribological property of aluminium alloy is critical for its reliable operation in practical applications. In this paper, the tribological performance of laser-textured 2024 aluminium alloy is studied in unidirectional sliding tests under boundary lubrication. The dimples were produced on the aluminium alloy surface by using a pulse Nd : YAG laser. The topographical microstructures of these laser-induced textures were characterised by optical and scanning electron microscopy. In comparison with untextured surfaces, a significant improvement in friction behaviour was observed for the textured surfaces. The influences of dimples density on the tribological properties were investigated. Two types of oil with different viscosities were evaluated as lubricants. It was found that the beneficial effects of laser surface texturing are more pronounced at higher speed and load with higher viscosity oil. The optimum dimples density of 8.5% was found to have a lower friction coefficient. On basis of the experimental results, the mechanism of friction reduction and anti-wear is proposed.

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Tribological and mechanical properties of Al alloyed bearings

Cited by 12 publications

References 20 publications

The effect of Mn addition on corrosion behaviour of equiatomic CoCrFeNi high entropy alloys in NaCl solution

The effect of Mn addition on corrosion behaviour of equiatomic CoCrFeNi high entropy alloys in NaCl solution

Investigation on the tribological property of marine engine bearing

The study of tribological properties of laser‐textured surface of 2024 aluminium alloy under boundary lubrication

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