Effect of In-situ Processing Parameters on the Mechanical and Tribological Properties of Self-Lubricating Hybrid Aluminum Nanocomposites

Moghadam, Afsaneh Dorri; Omrani, Emad; Menezes, Pradeep L.; Rohatgi, Pradeep K.

doi:10.1007/s11249-016-0670-2

Cited by 27 publications

(24 citation statements)

References 32 publications

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“…They have related this behavior to the increased hardness due to uniformly dispersed particles which supported the load and reduced contact area between pin and disk. But Moghadam et al 68 has found hardness and microstructural effects least significant than the lubricious tribolayer on contact surface in reducing friction. FSPed composites exhibit increased COF due to the barrier effect of particles against sliding.…”

Section: Friction Behavior Reviewmentioning

confidence: 97%

“…Effect of melt processing time and pouring temperature on the tribological response of Al-TiB 2 -Al 2 O 3 nanocomposites produced by in situ ultrasonic method is investigated by Moghadam et al 68 TiB 2 -Al 2 O 3 pellets were introduced in the vortex of Al melt held at constant melting temperatures, utilized ultrasonic processing times of 5, 10, and 15 min and poured melt at 700 C, 850 C, and 1000 C to see influence on grain size, hardness, and dry wear behavior of nanocomposites. In situ ultrasonic processing formed nanosized TiB 2 (8-20 nm) and Al 2 O 3 (50-150 nm) particles in the matrix and grain sizes reduced up to 70 microns.…”

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confidence: 99%

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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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Section: Friction Behavior Reviewmentioning

confidence: 97%

mentioning

confidence: 99%

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

Shinde

Sahoo

Davim

2020

Advanced Composites Letters

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“…For Al hybrid composites, there is a synergetic effect of GNPs and alumina particles to enhance mechanical properties [ 23 , 24 ]. In a comparison between Al/GNPs and Al/GNPs/Al 2 O 3 , with the same wt.% of GNPs, the hardness of hybrid composites is higher due to hard alumina particles.…”

Section: Resultsmentioning

confidence: 99%

“…The alternate way to fully utilize the lubricious properties of GNPs is by the addition of second hard nanoparticles, such as oxides and carbides. In our previous studies, we have shown that the addition of hard particles, such as Al 2 O 3 , TiO 2 , and TiB 2 in Al matrix, provided improved mechanical and tribological properties [ 23 , 24 ]. The mechanical properties of the Al-based composite with graphene and Al 2 O 3 reinforcement have been studied.…”

Section: Introductionmentioning

confidence: 99%

Tribological Performance of Graphite Nanoplatelets Reinforced Al and Al/Al2O3 Self-Lubricating Composites

et al. 2021

Self Cite

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In the present work, the effect of graphite nanoplatelets (GNPs) on tribological properties of the aluminum (Al), and Al/alumina (Al2O3) composite are studied. GNPs are multilayer graphene sheets which were used as a solid lubricant material. Two sets of composites, Al/GNPs and Al/GNPs/Al2O3 with varying amounts of reinforcements, were synthesized by powder metallurgy that involves cold compaction followed by hot compaction. The hardness of the composites increased with the addition of GNPs and Al2O3. The Al/GNPs composite with 1 wt.% of GNPs (Al/1GNPs) showed a 20% increase in hardness whereas Al/GNPs/ Al2O3 composite with 1 wt.% GNPs and 2 wt.% Al2O3 (Al/1GNPs/2Al2O3) showed 27% increases in hardness compared to the pure Al. The coefficient of friction measured at 20 N was observed to be 22% and 53% lesser for Al/1GNPs and Al/1GNPs/2Al2O3, respectively, compared to corresponding alloys without graphene Al. The X-ray diffraction and scanning electron microscopy analysis revealed the presence of GNPs at the worn surface after the tribology tests. The wear rate was also reduced significantly. In comparison with pure Al, the Al/1GNPs and Al/1GNPs/2Al2O3 composites resulted in 5- and 20-times lesser wear rate, respectively. The addition of Al2O3 caused reduction in wear rate due to higher hardness and load carrying ability, whereas composites with more than 1 wt.% GNPs showed higher wear rate due to lower hardness and higher porosity. The Al/1GNPs/2Al2O3 composite exhibited the least coefficient of friction (0.2–0.25) and wear rate (1 × 10−6–4 × 10−6mm3/N.m) compared to other GNPs and Al2O3 reinforced Al composites. The worn surfaces were further analyzed to understand the wear mechanism by Raman spectroscopy, transmission electron microscopy, and x-ray diffraction to detect the Al4C3 phase formation, chemical bonding, and defect formation in graphene.

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“…In recent years, developments of a metal matrix and alloy reinforced with particles below 100 nm offer potential and new possibilities in this regard [12,13,14,15,16,17]. By scaling down to a nanoparticle size or adding nanosized additive in metal matrices, notable improvements are expected, and the Orowan strengthening effect was found to play an important role in enhancing the metal matrix [18,19].…”

Section: Introductionmentioning

confidence: 99%

The Effect of ZrO2 Nanoparticles on the Microstructure and Properties of Sintered WC–Bronze-Based Diamond Composites

Sun

et al. 2016

Materials

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Metal matrix-impregnated diamond composites are widely used in diamond tool manufacturing. In order to satisfy the increasing engineering requirements, researchers have paid more and more attention to enhancing conventional metal matrices by applying novel methods. In this work, ZrO2 nanoparticles were introduced into the WC–bronze matrix with and without diamond grits via hot pressing to improve the performance of conventional diamond composites. The effects of ZrO2 nanoparticles on the microstructure, density, hardness, bending strength, and wear resistance of diamond composites were investigated. The results indicated that the hardness and relative density increased, while the bending strength decreased when the content of ZrO2 nanoparticles increased. The grinding ratio of diamond composites increased significantly by 60% as a result of nano-ZrO2 addition. The enhancement mechanism was discussed. Diamond composites showed the best overall properties with the addition of 1 wt % ZrO2 nanoparticles, thus paving the way for further applications.

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Effect of In-situ Processing Parameters on the Mechanical and Tribological Properties of Self-Lubricating Hybrid Aluminum Nanocomposites

Cited by 27 publications

References 32 publications

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

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

Tribological Performance of Graphite Nanoplatelets Reinforced Al and Al/Al2O3 Self-Lubricating Composites

The Effect of ZrO2 Nanoparticles on the Microstructure and Properties of Sintered WC–Bronze-Based Diamond Composites

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