Studies on High Temperature Wear and Friction Behaviour of AA6061/B4C/hBN Hybrid Composites

Ayyanar, S.; Gnanavelbabu, A.; Rajkumar, K.; Loganathan, P.

doi:10.1007/s12540-020-00710-z

Cited by 46 publications

(25 citation statements)

References 54 publications

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“…ere was a slight decrease in wear resistance with an increase in B 4 C wt %, but the friction coefficient did not change [29]. e impact of hybridizing carbon nanotubes and B 4 C on the mechanical properties of Al 6061 composites has not previously been studied using powder metallurgy [30]. Consequently, powder metallurgy was employed in the current investigation to generate the aluminium matrix reinforced with boron carbide and multiwalled carbon nanotubes [31].…”

Section: Introductionmentioning

confidence: 90%

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Satishkumar¹,

Natarajan²,

Rajasekaran

et al. 2022

Advances in Materials Science and Engineering

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Carbon nanotubes (CNTs) and graphene, in particular, have been the subject of many recent studies since their discovery in the early 2000s. Because of their unusual properties, carbon nanotubes (CNTs) have piqued the interest of scientists across a wide range of disciplines. An Al matrix was reinforced with powder metallurgy-fabricated B4C and CNT composites. The nanocomposite aluminium matrix was examined for tribological behaviour, density, stiffness, and compressive strength before and after hot isostatic pressing (HIP). Scanning electron microscopy and TEM were used to analyze the carbon nanotubes and their hybrid counterparts (SEM). The density of nanocomposites was reduced by 38% without HIP but by 45% after it was added to the mixture. Hardness was also increased by 40%, but following HIP, the hardness rose to 67%. Before and after HIP, the compression strength increased by 39% and 60%, respectively. HIP improves the wear rate by 45%, and B4C and CNTs improve the coefficient of friction by 20% in all volume fractions but only by 48% in the case of nanocomposites.

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Section: Introductionmentioning

confidence: 90%

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Satishkumar¹,

Natarajan²,

Rajasekaran

et al. 2022

Advances in Materials Science and Engineering

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“…However, the inclusion of B 4 C particles decreasing the WR due to enhanced the surface hardness. Ayyanar et al 22 presented the tribological characteristics of AA6061/B 4 C/h-BN composites and reported that the addition of solid lubrication h-BN particles brings the low WR and friction due to formation of tribo-layer on the worn surfaces shown in SEM morphology. Ghandvar et al 23 reported the wear behaviour of A356-ZrO 2 composites under dry sliding conditions and they have noted that wear loss linearly increases with increase in sliding distance, while an increase in applied load increasing the COF.…”

Section: Introductionmentioning

confidence: 99%

Prediction of tribological performance of AA8011/wt.%ZrO₂ based composites fabricated by stir casting route

Vinoth¹,

Alagarsamy²,

Meignanamoorthy³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Aluminium alloy composites are most popular owing to their versatile applications like high performance parts in aerospace, automotive and marine industries. The intent of current research work is, to predict the optimal parameters for dry sliding wear behaviour of AA8011 matrix composites by using multi attribute decision making method. The varying proportions of zirconia (ZrO2) particles filled composites such as AA8011-5 wt.% ZrO2, AA8011-10 wt.% ZrO2 and AA8011-15 wt.% ZrO2 were synthesized through stir casting method. The microstructure of the proposed composites taken by scanning electron microscopy (SEM), and it was ensure the presence of reinforcement particles homogeneously distributed within the matrix alloy. The produced composites were subjected to conduct the dry sliding wear test by using pin-on-disc test rig. During the experiments, four wear control parameters with three levels namely, reinforcement (5 wt.%, 10 wt.% and 15 wt.%), applied load (9.81 N, 19.62 N and 29.43 N), sliding velocity (0.94 m/s, 1.88 m/s and 3.76 m/s) and sliding distance (1000 m, 1500 m and 2000 m) were used. A Taguchi coupled TOPSIS method was employed to predict the multiple responses such as wear rate (WR) and coefficient of friction (COF) of produced composites. Experimental result has been observed that, the reinforcement content was the most remarkable parameter on WR and COF with contribution of 55.06%, subsequently by applied load and sliding velocity with contribution of 26.32% and 12.84% respectively. The worn out surfaces of the tested composite was investigated through SEM analysis.

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“…Hence, such multilayer inserts should be replaced by monometallic ones if it is possible. For this purpose, the strength of the Al–Sn alloys should be increased by alloying of the alloys with hard particles or some materials that form a solid solution with Al [ 10 , 11 , 12 ]. Simultaneously, it is necessary to avoid dissolution of these strengthening additives in Sn inclusions in order to maintain a high level of ductility and lubricating ability of the soft phase.…”

Section: Introductionmentioning

confidence: 99%

“…In order to increase the strength of aluminum alloys, they are often alloyed with silicon or hard ceramic particles [ 7 , 8 , 11 , 15 ]. However, their surface is poorly wetted by liquid tin, and weak interphase boundaries are formed in the alloys during the melt crystallization.…”

Section: Introductionmentioning

confidence: 99%

Tribotechnical Properties of Sintered Antifriction Aluminum-Based Composite under Dry Friction against Steel

et al. 2021

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The disadvantage of antifriction Al–Sn alloys with high tin content is their low bearing capacity. To improve this property, the aluminum matrix of the alloys was alloyed with zinc. The powder of Al–10Zn alloy was blended with the powder of pure tin in the proportion of 40/60 (wt.%). The resulting mixture of the powders was compacted in briquettes and sintered in a vacuum furnace. The sintered briquettes were subjected to subsequent pressing in the closed press mold at an elevated temperature. After this processing, the yield strength of the sintered (Al–10Zn)–40Sn composite was 1.6 times higher than that of the two-phase Al–40Sn one. The tribological tests of the composites were carried out according to the pin-on-disk scheme without lubrication at pressures of 1–5 MPa. It was established that the (Al–10Zn)–40Sn composite has higher wear resistance compared with the Al–40Sn one. However, this advantage becomes insignificant with an increase in the pressure. It was found that the main wear mechanism of the investigated composites under the dry friction process is a delamination of their highly deformed matrix grains.

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Studies on High Temperature Wear and Friction Behaviour of AA6061/B4C/hBN Hybrid Composites

Cited by 46 publications

References 54 publications

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Prediction of tribological performance of AA8011/wt.%ZrO₂ based composites fabricated by stir casting route

Tribotechnical Properties of Sintered Antifriction Aluminum-Based Composite under Dry Friction against Steel

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Studies on High Temperature Wear and Friction Behaviour of AA6061/B4C/hBN Hybrid Composites

Cited by 46 publications

References 54 publications

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Prediction of tribological performance of AA8011/wt.%ZrO2 based composites fabricated by stir casting route

Tribotechnical Properties of Sintered Antifriction Aluminum-Based Composite under Dry Friction against Steel

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Prediction of tribological performance of AA8011/wt.%ZrO₂ based composites fabricated by stir casting route