Wear behaviour of cast hypereutectic aluminium silicon alloys

Dwivedi, Dheerendra Kumar

doi:10.1016/j.matdes.2004.11.029

Cited by 112 publications

(50 citation statements)

References 15 publications

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“…Alloying: Producing aluminum alloys from pure aluminum by adding Si, Cu, Ni, Mg, Fe, etc., followed by a proper heat treatment. Alloying decreases the wear rate and also increases mild to severe wear transition load during the process [48,49], which is mainly attributed to material hardening [50,51]. Addition of about 4-24 % Si to aluminum improves wear resistance by at least two times [52].…”

Section: Wear and Friction Of Aluminum Alloys And Compositesmentioning

confidence: 99%

“…Thus, the wettability of the reinforcement within a matrix should be improved by reducing the surface energy of the reinforcement. One of the practices to lower the surface energy of reinforcement is adding alloying elements, such as magnesium, titanium, chromium, zirconium, vanadium, cobalt, and niobium, to the melt [47][48][49][50][51]. This will lead to a reduction in surface energy of the reinforcement and hence a better wettability of particles by the molten metal.…”

Section: Castingmentioning

confidence: 99%

See 1 more Smart Citation

Influences of graphite reinforcement on the tribological properties of self-lubricating aluminum matrix composites for green tribology, sustainability, and energy efficiency—a review

Omrani

Moghadam

Menezes

et al. 2015

Int J Adv Manuf Technol

134

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Aluminum/graphite (Al/Gr) composites have been used as self-lubricating materials due to the superior lubricating effect of graphite during sliding. This paper summarizes various tribological aspects of self-lubricating aluminum composites. The influence of various factors such as (a) material factors, graphite size and volume fraction, and (b) mechanical factors, applied load and sliding speed on the tribological properties of self-lubricating aluminum composites, is discussed. Furthermore, the tribological properties of selflubricating composites as a function of these parameters and the active wear mechanism involved in various systems are discussed. Bringing self-lubricating composites into different operating systems is a solution to reduce the use of external toxic petroleum-based lubricants in sliding contacts in a way to help the environment and reduce energy dissipation in industrial components for strategies toward sustainability and energy efficiency.

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Section: Wear and Friction Of Aluminum Alloys And Compositesmentioning

confidence: 99%

Section: Castingmentioning

confidence: 99%

Influences of graphite reinforcement on the tribological properties of self-lubricating aluminum matrix composites for green tribology, sustainability, and energy efficiency—a review

Omrani

Moghadam

Menezes

et al. 2015

Int J Adv Manuf Technol

134

View full text Add to dashboard Cite

show abstract

“…The applications of hypereutectic Al-Si alloys for the machine parts are increasing in the industry. However, little has been reported on the wear behavior of hypereutectic Al-Si alloys with the addition of RE grain refiner and modifier [22][23][24]. In present study, pure Nd was adopted to modify hypereutectic Al-20%Si alloy with an aim of investigating the effect of pure Nd on microstructure and wear resistance of hypereutectic Al-20%Si alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nd on microstructure and wear resistance of hypereutectic Al–20%Si alloy

Shi

Gao

et al. 2010

Journal of Alloys and Compounds

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“…Hypereutectic Al-Si alloys are extensively used in the automotive, aerospace, and defense industries. [3] Iron is the most common impurity in aluminum alloys. The low solubility of iron in aluminum alloy allows for the easy combination of Al, Si, or Mg to form various iron-rich phases during solidification.…”

Section: Introductionmentioning

confidence: 99%

Effects of Mg Content on Microstructure and Mechanical Properties of Al-14.5Si-4.5Cu Alloy

Lee

Hsieh

et al. 2010

Metall Mater Trans A

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This study elucidates how Mg content affects the microstructure and mechanical properties of Al-14.5Si-4.5Cu alloy by adding 0.45 and 0.90 wt pct Mg. Primary silicon, eutectic silicon, acicular b-Al 5 FeSi, Al 2 Cu, and Al 5 Cu 2 Mg 8 Si 6 phases were observed under the as-cast condition in low-Mg alloy. In high-Mg alloy, a large proportion of the acicular b-Al 5 FeSi phase was converted to Chinese script Al 8 Mg 3 FeSi 6 phase. Neither the acicular b-Al 5 FeSi phase nor the Chinese script Al 8 Mg 3 FeSi 6 phase dissolved in the Al matrix during solution heat treatment. Tensile testing indicates that T6-treated high-Mg alloy containing the Chinese script Al 8 Mg 3 FeSi 6 phase is better than the T6-treated low-Mg alloy that contains the acicular b-Al 5 FeSi phase. The morphologies of Chinese script Al 8 Mg 3 FeSi 6 and acicular b-Al 5 FeSi phases affect the tensile properties of Mg-containing Al-14.5Si-4.5Cu alloys. Additionally, high-Mg alloy contains a higher concentration of Mg solute atoms in the Al matrix than low-Mg alloy, and so the former contains more k¢ precipitates (Al 5 Cu 2 Mg 8 Si 6 ) after T6-tempering treatment. The large amount of k¢ that precipitates in T6-treated high-Mg alloy may also enhance its tensile strength. The ultimate tensile strength (UTS) and elongation of the high-Mg alloy are superior to those of the low-Mg alloy.

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Wear behaviour of cast hypereutectic aluminium silicon alloys

Cited by 112 publications

References 15 publications

Influences of graphite reinforcement on the tribological properties of self-lubricating aluminum matrix composites for green tribology, sustainability, and energy efficiency—a review

Influences of graphite reinforcement on the tribological properties of self-lubricating aluminum matrix composites for green tribology, sustainability, and energy efficiency—a review

Effect of Nd on microstructure and wear resistance of hypereutectic Al–20%Si alloy

Effects of Mg Content on Microstructure and Mechanical Properties of Al-14.5Si-4.5Cu Alloy

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