Investigations on dry sliding frictional and wear characteristics of SiC and red mud reinforced Al2024 matrix hybrid composites using Taguchi's approach

Abstract

In this study, frictional and wear behavior of Al2024/SiC/red mud hybrid composites processed by stir casting route has been investigated under dry sliding conditions. Further, influence of parameters, namely red mud fraction (5–20 wt%) and particle size (37–125 µm), applied load (10–40 N), sliding distance (3000–6000 m), sliding velocity (0.5–2.0 m/s), and their interaction terms on multiresponse characteristics has been examined by employing Taguchi's approach. The wear behavior of hybrid Al composites has been investigated using pin-on-disc apparatus at room temperature and optimization of parameters has been carried by statistical analysis. The adequacy of the developed model has been checked by conducting confirmation experiment and studying the worn surface morphology. The analysis of variance indicates that sliding distance has highest influence (with a contribution of 19.74%) on the wear loss characteristics, while applied load has a maximum contribution of 38.86% in the friction coefficient of the hybrid composites. It has also been revealed that the wear resistance of the hybrid composites is improved with an increase in red mud fraction and decrease in the magnitude of applied load and sliding distance. The morphology of worn surfaces shows that ploughing and abrasion of the wear surface is considerably increased with an increase in the magnitude of wear parameters. But, an increase in red mud fraction reduces the plastic deformation (delamination) of the wear surface since it favors formation of a protective layer between the sliding surfaces. The results of the confirmation experiment indicate that wear loss and friction coefficient of the developed composites have been reduced by 400 and 51%, respectively, in comparison to unreinforced alloy under optimized conditions. The errors in the measurements of the wear loss and friction coefficient have been found to be 4.26 and 2.63%, respectively.

[Retracted] Synthesis, Mechanical, and Tribological Performance Analysis of Stir‐Casted AA7079: ZrO2 + Si3N4 Hybrid Composites by Taguchi Route

“…Singh and Chauhan [4] investigated the wear performance of the aluminum matrix composites, namely, aluminum alloy together with silicon carbide and red mud prepared by stir-casting method. Statistical approach (Taguchi) is involved for their investigations, and parameters are preferred as percentage of red mud fraction, particle size and applied load, sliding distance, and sliding velocity.…”

Effect of Al2O3 nanoparticles on the mechanical behaviour of aluminium-based metal matrix composite synthesized via powder metallurgy

“…This was in agreement with previous studies which showed a higher wear rate of the MMCs at higher contact loads. 49,50 The significantly higher material loss of the samples with a higher weight fraction of Al 2 O 3 nanoparticles than the optimum level showed that the effects of excessive weight fraction of nanoparticles in the composite were more detrimental than having an insufficient weight fraction of nanoparticles in the composite. It can be said that agglomeration in samples with a higher weight fraction of nanoparticles than optimal weight fraction reduced the strength of samples.…”

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

“…The wear resistance is higher when reinforcement is added due to the formation of hard and resistant layer on the wear surface of composites and reduced frictional coefficient is achieved owing to lower fictional contact between sliding surfaces. 72 Singh and Yadav studied the wear characteristics of different weight percent values of RM-filled epoxy functionally graded composite. The sliding wear characteristics significantly enhanced by adding RM particles to the composites, as smaller grooves are seen at the surface of composites.…”