On the influence of carbon nanotubes on the wear performance and hardness of aluminium matrix composites

Xu, W. C.; Li, Ke; Xing, Li; Zhao, Xiaohui

doi:10.1002/mawe.201100791

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…Recently, friction stir processing has exposed the great potential for fabricating surface composites owing to its solid-state nature [8][9][10][11][12]. Friction stir processing is a unique variant of friction stir welding process, which has the same process principle of the friction stir welding [13,14].…”

Section: Introductionmentioning

confidence: 99%

Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing

Sharma

Patel

Badheka

et al. 2020

Materialwissenschaft Werkst

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Aluminum surface composites have gained huge importance in material processing due to their noble tribological characteristics. The reinforcement of solid lubricant particles with hard ceramics further enriches the tribological characteristics of surface composites. In the current study, friction stir processing was chosen to synthesize hybrid surface composites of aluminum containing B 4 C and MoS 2 particles with anticipated improved tribological behavior. B 4 C and MoS 2 powder particles in 87.5: 12.5 ratio were reinforced into the AA6061 by hole and groove method. Microstructural observations indicated that reinforcement particles are well distributed in the matrix. The hardness and wear resistance of hybrid surface composites improved as compared to the base material, due to well distributed abrasive B 4 C and solid lubricant MoS 2 particles in AA6061. The hybrid surface composites achieved~32 % increased average hardness as compared to the base material. Hole method revealed~13 % better wear resistance compared to the groove method for friction stir processed hybrid surface composite, attributing to an improved homogeneity of particle distribution shown by zigzag hole pattern. Moreover, friction stir processed AA6061 without reinforcement particles exhibited reduced hardness and wear resistance due to loss of strengthening precipitates during multi-pass friction stir processing.

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Section: Introductionmentioning

confidence: 99%

Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing

Sharma

Patel

Badheka

et al. 2020

Materialwissenschaft Werkst

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show abstract

“…At 5% and more of MWCNTs, the strain hardening effect can also be attributed to the increase in strength compared to the base metal [34]. In nano-sized reinforcements, the dislocation density evolved by athermal storage of dislocations due to dislocation pinning and annihilation of these dislocations due to dynamic recovery [35]. This might lead to plastic deformation from conventional dislocation slip to grain boundary migration.…”

Section: Microhardness Testmentioning

confidence: 99%

Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

Raja¹,

Jannet²,

Ruban³

2021

IJATEE

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Aluminum alloys play a major role in the aircraft, shipbuilding, and automotive industries because of their superior strength-to-weight ratio. The aluminum alloy 5083 0 has been used in the shipbuilding industry due to its corrosion resistance properties wants is a nanoparticle that has unique properties based on its structure . Moreover, the presence of carbon results in a very high wear resistance. Its high tensile strength along with its good electrical properties makes it a desirable reinforcement for aluminum alloys. Friction stir processing is a solidstate processing technology that has acquired significant attention in recent years because of the solid-state processing wherein the mixing of materials takes place in the plastic state. This removes the disadvantages of liquid-state processing such as casting, which occurs in high temperatures and leads to various defects, in turn reducing the strength of the composites. These were the motivation behind the current study. In the present study, MWCNTs were reinforced in the magnesium-based aluminum alloy 5083 0. This study exploits the presence of carbon as a self-lubricating feature.

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“…Although various methods have been utilized to disperse MWCNTs in the matrix uniformly, obtaining a uniform distribution is still challenging. Xu et al 12 fabricated CNT-reinforced Al matrix composites using FSP. They concluded that CNTs were not distributed in the aluminum matrix uniformly.…”

Section: Introductionmentioning

confidence: 99%

Simulation and experimental investigation of multi-walled carbon nanotubes/aluminum composite fabrication using friction stir processing

Akbari

Asadi

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Multi-walled carbon nanotube/aluminum composites are fabricated on Al–Si cast alloy employing friction stir processing. First, the microstructure of the stir zone, as well as the effect of process parameters on the size of silicon particles, is investigated. Then, the process is numerically simulated using a thermo-mechanically coupled three-dimensional finite element method model. Material flow, as the primary reason for the dispersion of reinforcing particles, is considered in the numerical model, and proper conditions to obtain a uniform dispersion of multi-walled carbon nanotubes are determined. Scanning electron microscope analysis is carried out to consider the particle distribution in the texture of the stir zone. The results show that the particle distribution improves significantly by changing the tool rotation direction between the friction stir processing passes. The hardness test is accomplished on the cross-section of the friction stir processed specimens, and finally, the wear test is performed to compare the wear resistance of the composites with the base alloy. The results show that the wear resistance and hardness of the produced composites are considerably enhanced compared to the base alloy.

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On the influence of carbon nanotubes on the wear performance and hardness of aluminium matrix composites

Cited by 8 publications

References 13 publications

Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing

Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing

Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

Simulation and experimental investigation of multi-walled carbon nanotubes/aluminum composite fabrication using friction stir processing

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On the influence of carbon nanotubes on the wear performance and hardness of aluminium matrix composites

Cited by 8 publications

References 13 publications

Different reinforcement strategies of hybrid surface composite AA6061/(B4C+MoS2) produced by friction stir processing

Different reinforcement strategies of hybrid surface composite AA6061/(B4C+MoS2) produced by friction stir processing

Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

Simulation and experimental investigation of multi-walled carbon nanotubes/aluminum composite fabrication using friction stir processing

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Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing

Different reinforcement strategies of hybrid surface composite AA6061/(B₄C+MoS₂) produced by friction stir processing