Wear behaviour and morphology of stir cast aluminium/SiC nanocomposites

Alam, Tanwir; Arif, Sajjad; Ansari, Akhter Husain

doi:10.1088/2053-1591/aab7b3

Cited by 20 publications

(13 citation statements)

References 21 publications

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“…9a-d of the Samples. Increase in wear resistance and hardness can be attributed to distribution of reinforcement particles in the matrix which is confirmed in the SEM images, similar type of results were reported by other researchers [22].…”

Section: Microstructure Analysissupporting

confidence: 90%

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An experimental analysis of tensile, hardness and wear properties of aluminium metal matrix composite through stir casting process

et al. 2020

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Among several methods to fabricate Aluminium metal matrix composites, stir-casting technique is used for large-scale production due to its being less expensive. This research is concerned with the fabrication of Aluminium composites with SiC and Jute Ash Particles, for sake of producing a cost-effective composite with enhanced properties. Wear behaviour was studied using pin on disc tribometer and it was found that wear resistance increases with-addition of reinforcement particles. Fabricated composite samples showed almost 4 times better wear resistance compared to base material. Matrix metal reinforced with SiC showed the best wear resistance of all fabricated samples. Coefficient of friction significantly decreased with the presence of reinforcement due to formation of mechanical mixed layer. Tensile Strength was escalated with the introduction of reinforcement as load is transferred to strongly bonded reinforcement particles. Microhardness was enhanced with the introduction of reinforcement and Sample 2 with SiC as reinforcement showed the best microhardness. Microstructure and fractography of the base metal and fabricated composites was analyzed by Scanning Electron Microscope (SEM).

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Section: Microstructure Analysissupporting

confidence: 90%

“…Md. Tanwir Alam et al [22] fabricated AA356 composite using varying wt% of SiC nanoparticles as reinforcement via Stir Casting. They found that tribological properties were enhanced with increasing wt% of SiCn, and adhesive wear was the major wear mechanism.…”

Section: Introductionmentioning

confidence: 99%

An experimental analysis of tensile, hardness and wear properties of aluminium metal matrix composite through stir casting process

et al. 2020

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“…Linear rise in wear resistance of stir cast A356/SiC nanocomposites for increasing content up to 5 wt% is found by Alam et al 35 They stated that Fe content in the wear debris increased and was 31% for 5 wt% nanocomposite. Hard and Fe-rich lubricative tribolayer on composite sample played vital role to resist its wear during sliding wear test.…”

Section: Materials Factorsmentioning

confidence: 76%

Tribological characterization of particulate-reinforced aluminum metal matrix nanocomposites: A review

Shinde

Sahoo

Davim

2020

Advanced Composites Letters

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Aluminum (Al)-based composites are on increasing usage in sectors like ground transportation, aerospace, sports, and infrastructure because of the improved properties such as high strength to weight ratio, corrosion, fatigue, and wear resistance. Several applications involving dynamic contact stresses require excellent wear and frictional performance for improved life. Nanocomposites are found to perform exceedingly better than microcomposites and alloys in several lab scale tribological investigations carried out so far in the last decade. In this article, an attempt is made to review those published reports about dry sliding tribological behavior of particulate-reinforced Al nanocomposites. Wear and friction being system properties are found to get influenced by intrinsic factors such as reinforcement, fabrication method, microstructure; extrinsic parameters like load, speed, contact conditions and the system generated in situ tribolayer all being interrelated.

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“…The amount of debris obtained is less in CNTs reinforced composites [20]. The adhesion and ploughing are caused wear, the delamination is the important wear mechanism in Al-Si material is shown in figure 14(f) [27,28]. The MWCNTs pulled out on the worn surface is noticed in figure 14(g).…”

Section: Dry Sliding Wear Experimentsmentioning

confidence: 96%

“…Thin, slightest depth and smooth grove were noticed for low load and speed condition and reverse trend for higher speed and load. The formation of oxide taken place with a raise in temperature with an increase in sliding duration [18,[22][23][24][25][26][27][28][29]. The plain and smooth wear tracks can observe in nanocomposites shown in figures 14(b) to (e), the MWCNTs reinforcement minimizes the adhesion and plough wear in comparison to LM6 [4,13].…”

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

Shivaramu¹,

U²,

Umashankar³

2020

Mater. Res. Express

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The present work involved the production of Metal Matrix Composites (MMCs) of Aluminium Silicon (Al-Si) alloy reinforced with Multi Walled Carbon Nano Tubes (MWCNTs) using Powder Metallurgy (PM) process. MWCNTs with concentrations of 0, 0.25, 0.5, 0.75 and 1.0 wt% were used. Validation of dispersion nature, existence and chemically stable of MWCNTs carried out using Transmission Electron Microscope (TEM), X-ray Diffractometer (XRD) and Energy Dispersive Spectrum (EDS) for fabricated composites. Sliding wear investigations were investigated in accordance with the ASTM G99-95a standard. Test variables such as sliding distance, load and speed were examined. Under a given load with sliding distance, the wear rate was found to reduce by varying disc rotation speed between 250 to 750 rpm. The rate of wear is dropped suddenly with the increment in sliding distance from 500 m to 1000 m. However, for 1500 m sliding distance, the wear rate increased linearly for all nanocomposites. The reinforcement of 0.25 wt% and 0.5 wt% of MWCNTs shown lower wear resistance and further addition of 0.75 wt% MWCNTs shown enhanced wear resistance but the addition of reinforcement of above 0.75 wt% resulted in slightly higher wear rate. The wear resistance enhanced due to the excellent properties of reinforcement particles. The Scanning Electron Microscope (SEM) was used for identifying the kind of wear mechanism.

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Wear behaviour and morphology of stir cast aluminium/SiC nanocomposites

Cited by 20 publications

References 21 publications

An experimental analysis of tensile, hardness and wear properties of aluminium metal matrix composite through stir casting process

An experimental analysis of tensile, hardness and wear properties of aluminium metal matrix composite through stir casting process

Tribological characterization of particulate-reinforced aluminum metal matrix nanocomposites: A review

Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

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