Adhesive wear behaviour of cast aluminium–silicon alloys: Overview

Dwivedi, Dheerendra Kumar

doi:10.1016/j.matdes.2009.11.038

Cited by 189 publications

(100 citation statements)

References 47 publications

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“…Moreover, at any given sliding distance, weight loss increases with applied load. Similar trend is also observed for other conditions, which is in agreement with other researchers [40][41][42][43][44][45][46][47][48][49][50][51][52]. The wear rate was calculated from the slope of the weight loss versus sliding distance.…”

Section: Wear Behaviorsupporting

confidence: 90%

Reciprocating Wear Behavior of Al Alloys: Effect of Porosity and Normal Load

Sinha¹,

Islam²,

Farhat³

2015

Int J Metall Mater Eng

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Aluminum alloys are attractive for critical applications such as pistons, clutch housings and liners in automotive industry for their high strength to weight ratio, high corrosion resistance and good heat conductivity. These alloys can be fabricated using casting and powder metallurgy techniques in which porosity is a common feature. The presences of pores adversely affect the mechanical properties and wear resistance of these components. Not only the total area percentage of porosity influences the degradation in properties but also size, shape and interconnectivity of pores play an important role. In this study, aluminum alloys were produced using powder metallurgy technique. The amount of porosity was varied by varying compaction pressure and amount of wax added before compaction. Reciprocating wear tests (ball-on-flat configuration) were performed against AISI 52100 bearing steel ball under both low (1.5-5N) and high (6-20N) loads. Scanning electron microscopy was employed in order to identify possible wear mechanisms. Both detrimental and beneficial effects of porosity under different loading conditions were observed. An attempt has been made to develop a relationship between pore size and distribution and wear behavior of aluminum alloys.

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Section: Wear Behaviorsupporting

confidence: 90%

Reciprocating Wear Behavior of Al Alloys: Effect of Porosity and Normal Load

Sinha¹,

Islam²,

Farhat³

2015

Int J Metall Mater Eng

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“…The temperature rise leads to preferential oxidation of the sample surface (as observed by EDX analysis, not shown here). 55,56 Hence, the wear of Al-12Si SLM samples takes place through plowing, partial delamination and oxidative wear. [56][57][58] This scenario also holds for the Al-12Si-TNMCs.…”

Section: B Mechanical Properties and Wear Mechanismmentioning

confidence: 99%

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

et al. 2015

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Al-12Si (80 vol%)-Ti 52.4 Al 42.2 Nb 4.4 Mo 0.9 B 0.06 (at.%) (TNM) composites were successfully produced by the selective laser melting (SLM). Detailed structural and microstructural analysis shows the formation of the Al 6 MoTi intermetallic phase due to the reaction of the TNM reinforcement with the Al-12Si matrix during SLM. Compression tests reveal that the composites exhibit significantly improved properties (;140 and ;160 MPa higher yield and ultimate compressive strengths, respectively) compared with the Al-12Si matrix. However, the samples break at ;6% total strain under compression, thus showing a reduced plasticity of the composites. Sliding wear tests were carried out for both the Al-12Si matrix and the Al-12Si-TNM composites. The composites perform better under sliding wear conditions and the wear rate increases with increasing loads. At high loads, the wear takes place at three different rates and the wear rate decreases with increasing experiment duration.

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“…So in the present study, a comparison of wear rates of hypereutectic AlSi base alloy [10] and Cerium oxide modified alloy with Cerium oxide and Mn modified alloy has been done to establish that Mn helps to reduce the wear rates of Cerium Wear rate of Cerium oxide modified hypereutectic Al-Si alloy was 2.97 times lesser than the wear rate of Cerium oxide and Mn modified hypereutectic Al-Si base alloy and wear rate of base alloy is 6.36 times lesser than the wear rate of Cerium oxide and Mn modified hypereutectic Al-Si alloy. Thus, Manganese modification to rare earth Cerium oxide helps in improving the wear resistance of hypereutectic Al-Si alloy by increasing hardness [11] and as per Archard law [13] hardness is inversely proportional to wear rate. For the present alloy system wear rate was more at low velocity due to more surface to surface contact and wear rate was lesser at higher velocity due to less surface to surface contact.…”

Section: Resultsmentioning

confidence: 99%

“…Earlier, many researchers have done studies for determining the wear rates of alloys in dry sliding adhesive wear under reciprocating conditions [11]. Author has already established in her earlier work [10] that improvement of wear properties can be achieved by adding Cerium oxide to a hypereutectic Al-Si alloy.…”

Section: Resultsmentioning

confidence: 99%