Processing and dry sliding wear performance of spray deposited hyper-eutectic aluminum–silicon alloys

Raghukiran, Nadimpalli; Kumar, Ravi

doi:10.1016/j.jmatprotec.2012.10.007

Cited by 38 publications

(15 citation statements)

References 26 publications

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“…From the size distribution of the Si-particle size, it can be seen that the average Si-size remains intact as a function of Si-content in the alloy. This is in contrast to the earlier observation in the case of similar Al-Si binary spray deposited alloys without the addition of scandium [15]. In the absence of scandium, the silicon size was observed to increase with increase in silicon the content in the alloy for the given spray forming process parameters.…”

Section: Microstructure Of the Depositscontrasting

confidence: 99%

“…For instance, the enthalpy release varies from 540 J/g to 840 J/g for the Al-13Si alloy to Al-22Si alloy respectively [7]. This effectively reduces the solidification rate and hence the refinement effect on these alloys [15]. Hence, to achieve effective refinement of silicon phase of the Al-Si alloys having higher silicon content, it is important to improve the cooling rates during spray forming.…”

Section: Microstructure Of the Depositsmentioning

confidence: 99%

“…Under these conditions, the matrix (α-aluminum) hardness and the silicon content present in the alloy influence the wear performance of the alloy. The comparison of the wear performance of the ternary alloys under study with the binary alloys [15] is shown in Fig. 13.…”

Section: Wear Performancementioning

confidence: 99%

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Effect of scandium addition on the microstructure, mechanical and wear properties of the spray formed hypereutectic aluminum–silicon alloys

Raghukiran

Kumar

2015

Materials Science and Engineering: A

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Section: Microstructure Of the Depositscontrasting

confidence: 99%

Section: Microstructure Of the Depositsmentioning

confidence: 99%

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Effect of scandium addition on the microstructure, mechanical and wear properties of the spray formed hypereutectic aluminum–silicon alloys

Raghukiran

Kumar

2015

Materials Science and Engineering: A

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“…It was found in this study that Al-Pb bearing alloys exhibited a superior wear resistance than that of Al-Sn alloys. The effect of spray deposition process on the tribological performance of Al-Si alloys was reported by Raghukiran and Kumar [4]. It was concluded that the spray deposited alloys have superior wear performance in contrast to similar alloys produced through other processing routes.…”

Section: Introductionmentioning

confidence: 83%

Wear Behavior and Characterization of Spray Formed Al-Si and Al-Si-Sn Alloys

Hatti¹,

Mutalikdesai²,

Deshpande³

2016

IJIRSET

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Wear behavior of spray formed Al-17Si and Al-17Si-10Sn alloys was investigated using a pin on disk type wear testing machine and characterization of this Al-Si and Al-Si-Sn metal matrix composite alloys is done using optical microscope. The alloys were spray formed in an environmental chamber using nitrogen gas and a deposition distance of 380mm. The spray formed alloys showed considerable microstructural refinement with uniform distribution of Si particles in Al-Si alloys and that of Sn and Si particles in the matrix of primary Al phase of Al-Si-Sn alloys. Dry sliding wear behavior of these metal matrix composite alloys was studied as a function of sliding distance, applied load and sliding velocity. The wear response parameters such as wear rate and frictional force were measured. A considerable increase in the wear resistance of the alloy is observed with addition of Tin(Sn). The improved wear properties and characterization of the alloy containing Sn are discussed in light of the microstructural features of spray formed alloy.

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“…However, in general, the presence of porosity is accompanied by a decrease in mechanical properties, i.e., drop in strength and ductility of materials [20][21][22][23][24][25][26][27][28][29][30][31][32]. Hardin and Beckermann [33] demonstrated an apparent reduction in elastic moduli of components due to the presence of pores.…”

Section: Introductionmentioning

confidence: 99%

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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Processing and dry sliding wear performance of spray deposited hyper-eutectic aluminum–silicon alloys

Cited by 38 publications

References 26 publications

Effect of scandium addition on the microstructure, mechanical and wear properties of the spray formed hypereutectic aluminum–silicon alloys

Effect of scandium addition on the microstructure, mechanical and wear properties of the spray formed hypereutectic aluminum–silicon alloys

Wear Behavior and Characterization of Spray Formed Al-Si and Al-Si-Sn Alloys

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

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