Wear of aluminium under dry sliding conditions

Yaseen, Rabiha S.; Dwarakadasa, E. S.

doi:10.1016/0043-1648(83)90277-6

Cited by 20 publications

(5 citation statements)

References 4 publications

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“…Furthermore, wear transitions in aluminum alloys are common (Ref 7,8). As load, speed, sliding distance, or temperature varies during wear, operating wear mechanisms may also change leading to wear transitions.…”

Section: Introductionmentioning

confidence: 99%

Wear of A380M Aluminum Alloy Under Reciprocating Load

Islam

Farhat

2010

J. of Materi Eng and Perform

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Due to their excellent strength to weight ratio, aluminum alloys are widely used in a variety of automotive components. Their relatively low melting point and low hardness compared to other engineering alloys, however, limits their use in applications where wear resistance is needed. To improve the wear resistance of these alloys, a good understanding of their wear behavior is essential. Dry sliding wear behavior of A380M aluminum alloy was investigated in the load range 6-20 N against steel ball using a reciprocating ball-on-flat configuration and at a frequency range of 4-20 Hz. Micromechanical properties were measured using a nano-indentation system. Scanning electron microscope examination of the wear track and debris revealed that wear within the present load and frequency range was due to abrasion, plastic deformation, and delamination. It was found that the wear rate of A380M aluminum alloy increased with load and decreased with increase in frequency.

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Section: Introductionmentioning

confidence: 99%

Wear of A380M Aluminum Alloy Under Reciprocating Load

Islam

Farhat

2010

J. of Materi Eng and Perform

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“…In addition, many studies showed that there are other factors such as load, test duration, temperature, humidity affect wear mechanisms and wear resistance. It has been observed that even a minor alteration in any of the material parameters and operating conditions can change the sliding wear behavior significantly [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Porosity on Tribological Properties of Sintered Pure Al and Al 6061

Sinha¹,

Farhat²

2015

MSA

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Due to light weight, high specific strength, high corrosion resistance and good heat transfer ability, aluminium alloys are becoming attractive for critical structural applications. These alloys can be manufactured using powder metallurgy techniques in which porosity is a common characteristic. The presence of pores is responsible for decreasing effective load bearing cross sectional area and inducing stress concentration sites for strain localization and damage, decreasing both strength and ductility. The present study aims to establish a better understanding of the relationship between surface porosity and corresponding wear behavior. In this study, porous specimens were produced using powder metallurgy technique and the extent of wear damage and the type of wear was investigated under low load range of 1.5-5 N against AISI 52100 bearing steel ball using a reciprocating ball-on-flat configuration and frequency of 10 Hz. Scanning electron microscopy of the wear tracks and wear debris was carried out to understand wear mechanisms. This study revealed that due to combined effect of high stress intensity and subsurface cracking, wear rate increases with increasing porosity content. The friction and wear behavior of pure Al and Al 6061 as a function of porosity content can be attributed to their hardness and corresponding wear mechanism.

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“…Usually for Al-Si alloys under low velocity (up to 2 m/sec) linear relationship exist between velocities and wear rate [14]. At high load, coarsening of b phase particles occurs leading to increase in the temperature during the sliding of cast Al-Si alloys [15]. For hypoeutectic and hyper eutectic alloy nonlinear relationship exist among applied load and wear rate against steel beyond certain critical load at which transition from mild to severe metallic wear take place [16].…”

Section: Wear Testsmentioning

confidence: 99%

Study on the Effects of Squeeze Pressure on Mechanical Properties and Wear Characteristics of Near Eutectic Al–Si–Cu–Mg–Ni Piston Alloy with Variable Mg Content

Pratheesh

Kanjirathinkal

Joseph

et al. 2015

Trans Indian Inst Met

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In the present work, the effects of pressure on the wear resistance characteristics, mechanical properties and the microstructures of Al-Si piston alloys that have variable Magnesium (Mg) content are studied. The paper begins with an explanation of the desirable properties of eutectic Al-Si alloys and why these chemical and mechanical properties are desirable in the fabrication of light weight machine components. The methods for further strengthening the alloys using alloying elements such as Ni, Cu and Mg, and applying heat treatment are also discussed. The paper also emphasises on the addition of Magnesium, and compares the traditional gravity die casting with a novel hybrid technology known as squeeze casting. In the results and discussion section, the microstructure properties of the Al-Si both as-cast and after heat treatment conditions are discussed. The mechanical and wear properties as well as the implications of pressure on the alloys are also discussed in details. SEM analyses of wear surface and fracture behavior on the as cast Al-Si alloys and after heat treatment, reveal that squeeze pressure increases fracture ductility as well as resistance to wear; more so upon heat treatment. It is also determined that the hardness and UTS values increases with increase in Magnesium content and reaches the maximum values when Mg content is at 1 % of the alloy's composition.

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Wear of aluminium under dry sliding conditions

Cited by 20 publications

References 4 publications

Wear of A380M Aluminum Alloy Under Reciprocating Load

Wear of A380M Aluminum Alloy Under Reciprocating Load

Effect of Surface Porosity on Tribological Properties of Sintered Pure Al and Al 6061

Study on the Effects of Squeeze Pressure on Mechanical Properties and Wear Characteristics of Near Eutectic Al–Si–Cu–Mg–Ni Piston Alloy with Variable Mg Content

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