The influence of porosity and particles content on dry sliding wear of cast in situ Al(Ti)–Al2O3(TiO2) composite

Hamid, Abdulhaqq A.; Ghosh, P. K.; Jain, S. C.; Ray, S.

doi:10.1016/j.wear.2007.08.018

Cited by 107 publications

(48 citation statements)

References 20 publications

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“…For example, at 2.5 N loads, there is around 2.5 fold increase in wear rate when surface porosity increased from 3.5% to 20.7%. Similar results (increase in wear rate with increasing porosity) were reported by other researchers [53,54]. Again, wear rate of the specimens increases with increasing normal load.…”

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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“…In addition, pores are lubricant reservoirs under wet sliding conditions, which may be noted as a major advantage in processes of wearing [13]. Some authors [14,15] have found that, in dry sliding conditions, the wear rate increases along with the increasing volume fraction of the porosity. The trapping of wear debris in the pores decreases wear rate by decreasing the contact pressure [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Influence of residual porosity on the dry and lubricated sliding wear of a powder metallurgy austenitic stainless steel

Martín-Pedrosa

Garcı́a

Blanco

2015

Wear

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“…The results of the analysis prove the occurrence of adhesion phenomenon during wear due to existence of counter disk elements (Fe and Cr) on the worn surface of the samples. Besides, some trace of oxygen shows oxidation, which is common in the wear test of Aluminum based alloys [27].…”

Section: Sem Investigationmentioning

confidence: 99%