Effect of Al<sub>2</sub>O<sub>3</sub> nanoparticle reinforcement on the mechanical and high-temperature tribological behavior of Al-7075 alloy

Bai, Yaping; Guo, Ya-Fang; Li, Jianping; Yang, Zhong; Tian, Jia

doi:10.1177/1350650116683627

Cited by 21 publications

(10 citation statements)

References 20 publications

(20 reference statements)

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“…The expansion in YS of the composite is clearly because of nearness of hard Al2O3 particles which grant quality to the delicate aluminum network bringing about more prominent resistance of the composite against the connected ductile load. On account of molecule strengthened composites, the scattered hard particles in the grid make limitation to the plastic stream, in this way giving upgraded quality to the composite [15].…”

Section: Ultimate Tensile Strength and Yield Strengthmentioning

confidence: 99%

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Nagaral

Auradi²,

Kori³

et al. 2019

JMES

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In the present investigation synthesis, microstructure, mechanical and wear behavior of 5 weight percentage of nano Al2O3 particulate reinforced AA7475 alloy composites has been reported. AA7475 matrix composite containing nano Al2O3 were fabricated by conventional stir casting method. The microstructures of the composites were examined by scanning electron microscopy. Further, mechanical and wear behavior of as cast AA7475 alloy and AA7475 - 5 wt. % nano Al2O3 composites were studied. Mechanical properties like hardness, ultimate, yield strength and percentage elongation were evaluated as per ASTM standards. Pin on disc apparatus was used to conduct the dry sliding wear tests. The experiments were conducted by varying loads and constant sliding speed of 300rpm for sliding distance of 4000m. Microstructural observation revealed the uniform distribution of particles in the AA7475 alloy matrix. From the analysis, it was found that the hardness, ultimate tensile strength and yield strength of composites were increased due to addition of nano Al2O3 particle in the AA7475 alloy matrix. Percentage elongation of the composite decreased in 5 wt. % nano Al2O3 reinforced composites. Further, the volumetric wear loss was found to increase with the load and sliding distance for all materials. Worn surface analysis made by using scanning electron micrographs to know the various mechanisms involved in the wear process.

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Section: Ultimate Tensile Strength and Yield Strengthmentioning

confidence: 99%

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Nagaral

Auradi²,

Kori³

et al. 2019

JMES

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“…34 This is because the presence of filler particles acted as spacers (surface modifier) which acts as adhesion between the contact surface interface. [39][40][41][42][43][44][45]…”

Section: Coefficient Of Frictionmentioning

confidence: 99%

Tribological behaviour of SiC and AL₂O₃ filled glass-epoxy composite

Kolipakula¹,

Aduru

Pinninti

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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Metal glass fibre reinforced composites which are considered as advanced composite materials play a significant role in aerospace, marine and automotive industries. In the current study, an attempt has been made to examine the tribological characteristics of glass fibre reinforced plastic (GFRP) composite filled with aluminium oxide (Al2O3) and silicon carbide (SiC) powder particles. Experiments were performed on pin-on-disc tribometer to evaluate the friction and wear rate as a function of normal load and sliding velocity under different conditions. For each composition of glass-epoxy composite filled with and without fillers, sliding tests were performed with normal load (20 N, 40 N, 60 N, 80 N 100 N) and sliding velocity (2.62 m/s, 4.18 m/s, 5.23 m/s, 6.85 m/s, 7.85 m/s) respectively. The metal GFRP composites were fabricated using hand-lay-up technique. The filler content (SiC & Al2O3) in epoxy-glass composite were varied. SiC was varied from 0 to 10% while Al2O3 was kept constant at 5%. To study the worn surface of glass-epoxy composite material scanning electronic microscopy is used. Before and after the experiment, weights of the composites (pin specimens) were studied on digital balance for wear loss. The present studies reported that the fabricated metal epoxy-fibre composite has performed excellent wear resistance when compared with epoxy-fibre composite without metal powders. The present work findings offer new insights into reinforcement in epoxy-glass composites with metal powders.

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“…To overcome the above problem, most of the researchers are adding both ceramics and lubricants for developing hybrid composites, which leads to achieving better mechanical and tribological properties [3][4][5][6][7]. Among other aluminum alloys, Al 7075 has owing the high strength and greater potential in dry sliding wear applications [8][9]. A numerous amount of research work [10][11][12] has been done to study the wear behavior of Al 7075 alloy reinforced with various ceramic reinforcements like silicon carbide (SiC), titanium carbide (TiC), alumina (Al 2 O 3 ), graphite (Gr), titanium boride (TiB 2 ), etc.…”

Section: Introductionmentioning

confidence: 99%

Wear and Frictional Behavior of Al 7075/FA/SiC Hybrid MMC’s using Response Surface Methodology

Mandava

Reddy

Rao³

et al. 2021

Preprint

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In the present research work an effort has been made to study the wear and frictional behavior of Aluminium Metal Matrix composite (Al 7075 as a base alloy and fly ash (FA) and silicon carbide (SiC) as reinforcements) by using the stir casting method. To carry out this work, the wt. % of reinforcements FA (2.5%, 5%, 7.5% and 10%) and SiC (2.5%, 5%, 7.5% and 10%)have been used 5%, 10%, 15% and 20%. Initially, the mechanical studies have been conducted and the best mechanical properties obtained at 20 wt. % of FA and SiC. Later on, the composite was fabricated by 20 wt. % of FA, SiC reinforcements are used to check the wear and frictional behavior on a pin-on-disc machine at the dry condition. The dry sliding wear behavior was carried out at various input parameters such as applied force (10N, 20N, and 30N), sliding velocity (1.5m/s, 3m/s, and 4.5m/s), and sliding distance (1000 m, 2000 m, and 3000 m). Further, a scanning electron microscope (SEM) are used to observe the mixing of reinforcements and examine the worn surfaces. A response surface methodology (RSM) is the reasonable and accurate method for conducting the experiments and identifying the optimal wear parameters. Moreover, the RSM was helped to identify the most significant factor, which was the influence on the wear rate. Finally, it is decided that the applying force is the utmost significant factor that leaves an effect on wear rate. The sliding velocity and distance are acting as the lesser influence on the performance indicator.

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Effect of Al₂O₃ nanoparticle reinforcement on the mechanical and high-temperature tribological behavior of Al-7075 alloy

Cited by 21 publications

References 20 publications

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Tribological behaviour of SiC and AL₂O₃ filled glass-epoxy composite

Wear and Frictional Behavior of Al 7075/FA/SiC Hybrid MMC’s using Response Surface Methodology

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Effect of Al2O3 nanoparticle reinforcement on the mechanical and high-temperature tribological behavior of Al-7075 alloy

Cited by 21 publications

References 20 publications

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Investigations on mechanical and wear behavior of nano Al2O3 particulates reinforced AA7475 alloy composites

Tribological behaviour of SiC and AL2O3 filled glass-epoxy composite

Wear and Frictional Behavior of Al 7075/FA/SiC Hybrid MMC’s using Response Surface Methodology

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Effect of Al₂O₃ nanoparticle reinforcement on the mechanical and high-temperature tribological behavior of Al-7075 alloy

Tribological behaviour of SiC and AL₂O₃ filled glass-epoxy composite