Dry Sliding Tribological Behavior of Al7010/B4C/BN Hybrid Metal Matrix Nanocomposites Prepared by Ultrasonic-Assisted Stir Casting

Dirisenapu, Gopichand; Dumpala, Lingaraju; Reddy, Seelam Pichi

doi:10.1007/s12666-020-02128-y

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…The corrosion rate was reduced by 18.5% with the addition of 3% and 6% boron carbide 45 Al6061/B4C/BN (2, 4, 6, and 8 wt%) B4C as well as 2% BN 8 wt% B4C reinforcement, an erodent discharge rate of 8 gmin -1 , an erodent velocity of 80 ms -1 , and an impingement angle of 45° 46 Al7075/B4C/BN) (3%, 6%, and 9% of B4C while maintaining a constant BN of 3% The ultimate tensile strength, yield strength, and hardness are increased by adding B4C (9%) and BN (3%) and are 57, 44, and 72% greater than those of the unreinforced aluminium matrix. The density of the final composite rose significantly than the matrix material 47 Equal amounts of B4C and BN nanoparticles in an Al 7010 matrix at weight percentages of 0, 0.5, 1, 1.5, 2, and 2.5 Up to a concentration of 2 wt% of nanoparticles, microhardness increases; after that, it decreases. Improved friction coefficient by 2.5wt%; reduced wear rate 48 AA6061 alloy reinforced hybrid composites with 5–15 weight percent h-BN and 5–15 weight percent boron carbide The 15% B 4 C and 5% h-BN hybrid composite achieved a considerable increase in tensile strength up to 82% compared to the AA6061 matrix alloy Due to the comprehensive lubricating action on the entire worn surface, B 4 C 10wt% and 10 wt% h-BN demonstrated improved wear resistance 49 Aluminium 7010 reinforced with 0 to 2.5 percent of boron carbide (B 4 C) and boron nitride (BN) nanoparticles mixed in equal parts as reinforcing materials With an increase in particle reinforcement up to 2 Wt% and then increased, the composite’s percentage of elongation and impact strength is decreased.…”

Section: Resultsmentioning

confidence: 95%

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

Anbuchezhiyan

Mubarak

Karri

et al. 2022

Sci Rep

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Mg–Al–Zn alloys are widely preferred in many applications by considering their excellent properties of high stiffness-to-weight ratio, lightweight, high strength-to-weight ratio, low density, castability, high-temperature mechanical properties, machinability, high corrosion resistance, and great damping. Improving the properties of such alloys is challenging due to their hexagonal crystal structure and other alloying limitations. This study aims to synthesize Mg–Al–Zn alloy by incorporating the alloying elements 8.3 wt% Al, 0.35 wt% Zn on pure magnesium (Control specimen). Then synthesize Mg–Al–Zn/BN/B4C hybrid composite by reinforcing B4C at three weight proportions (3 wt%, 6 wt%, 9 wt%) along with constant solid lubricant BN (3 wt%) through a stir casting process. The hybrid composite samples were characterized and compared with the performances of the control specimen. The results reveal that 9 wt% B4C reinforced samples outperformed through recording the improvement of tensile strength by 28.94%, compressive strength by 37.89%, yield strength by 74.63%, and hardness by 14.91% than the control specimen. Apart from this, it has reduced the corrosion area (37.81%) and noticed negligible changes in density (increased by 0.03%) and porosity (decreased by 0.01%) than the control specimen. The samples were characterized using SEM, XRD, and EDAX apparatus.

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Section: Resultsmentioning

confidence: 95%

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

Anbuchezhiyan

Mubarak

Karri

et al. 2022

Sci Rep

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“…The ultrasonication process is very useful in the dispersion of reinforcement in the matrix. [36][37][38][39][40] The use of wetting agents like K 2 TiF 6 , 41 borax, and magnesium 42 will increase the wettability of reinforcement in the matrix. Figure 4 briefs the range of parameters that researchers have used to obtain good microstructure in MMCs.…”

Section: Influence Of Process Parametersmentioning

confidence: 99%

Effect of stir casting parameters and mono/hybrid reinforcements on aluminium metal matrix composite–A review

Rajamurugan

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Aluminum metal matrix composites are a new class of materials that have gathered more attention from many materialists. Especially, the automotive components like a piston, cylinder block, brake drum, etc., fabricated by different reinforcement, which has exposed better performance over conventional engineering materials. Aluminum composites are generally fabricated by stir casting technique due to simplicity in operation and adaptive to mass or job order production. The paper provides a background for the readers interested in the production of metal matrix composites through stir casting. Based on the literature assessment, the special attentions taken by the researchers to enhance the uniform distribution of particle to avoid agglomeration are discussed. The composite performances mainly depend on the aluminum matrix, particle size, the quantity of reinforcement, preheating temperature of reinforcement, and processing parameters such as stirring speed, stirring time, and wetting agents. The selection of two reinforcements and their suitable parameters for wetting are attaining interest by many researchers and maybe opted as future scope.

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“…The ultrasonication improves the blending of B 4 C in the Al 6061 matrix, thereby increasing mechanical properties [8]. With B 4 C and BN nanoparticles, a decrease in wear rate was observed in composite samples [9]. The use of nano Al 2 O 3 reduction in grain size is achieved.…”

Section: Introductionmentioning

confidence: 96%

Exfoliation corrosion susceptibility on friction stir welded aluminium 6061/Cr₂O₃ composite

2022

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The current study investigates the exfoliation corrosion behavior of friction stir welded aluminum composite. The stir casting method was employed to fabricate chromium oxide (2 and 4% wt) reinforced Al 6061 composites. The fabricated composite samples are friction stir welded with two process parameters. The solution immersion tests were performed for two intervals per the ASTM G34 (24 hours, 48 hours), and the weight loss method was employed. The corrosion sample is analyzed by optical microscope FESEM and surface roughness. The gelatinous corrosion product formed over the surface can apply pressure over the grains resulting in the formation of pits. The intergranular corrosion (IGC) is formed by continuous penetration of the solution and the pits. The grains suffering from IGC are more susceptible to pit. The weight-loss method is not sufficient to predict the damage induced by the exco solution. Evaluating the pit depth can help to know the severity of corrosion. The measurement of the pit is difficult due to its irregular nature. The surface roughness instrument is used, and the damage is represented in average roughness (Ra) and average depth (Rz). The exposure duration and welding parameters play a significant role in corrosion. More material is lost at higher process parameters and extended hours of the test, forming higher surface deterioration.

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Dry Sliding Tribological Behavior of Al7010/B4C/BN Hybrid Metal Matrix Nanocomposites Prepared by Ultrasonic-Assisted Stir Casting

Cited by 10 publications

References 30 publications

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

Effect of stir casting parameters and mono/hybrid reinforcements on aluminium metal matrix composite–A review

Exfoliation corrosion susceptibility on friction stir welded aluminium 6061/Cr₂O₃ composite

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Dry Sliding Tribological Behavior of Al7010/B4C/BN Hybrid Metal Matrix Nanocomposites Prepared by Ultrasonic-Assisted Stir Casting

Cited by 10 publications

References 30 publications

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

A synergistic effect on enriching the Mg–Al–Zn alloy-based hybrid composite properties

Effect of stir casting parameters and mono/hybrid reinforcements on aluminium metal matrix composite–A review

Exfoliation corrosion susceptibility on friction stir welded aluminium 6061/Cr2O3 composite

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Exfoliation corrosion susceptibility on friction stir welded aluminium 6061/Cr₂O₃ composite