Abstract
In this work aluminium-silicon alloy (A356) is strengthened with blends of granite and graphite particles using stir casting technique. Granite particulates, an industrial waste generated while cutting granite stones is used along with graphite particulates which has excellent lubricant properties. The reinforcements are mixed in different weight proportions, to base alloy at 2 and 4 weight percentages. Wear rate and friction for the fabricated composites and alloy is recorded during each sliding test The dry sliding wear of the over different loads with a track diameter of 60 mm and sliding times of 15, 30 and 45 minutes respectively. The techniques of ANOVA and Taguchi are used to study the influence of wear parameters on the friction coefficient of composites by using “MINITAB 18” software with quality characteristics chosen as smaller is better.
Highlights
Due to the improved mechanical and tribological properties, aluminium metal matrix composites (AMMC's) got great importance and became a part of aviation and automobile/vehicle industries
The main fundamental demand from the automobile industry is to find advanced materials, which are capable of reducing fuel utilization and vehicle discharges [1]
The aluminium metal matrix composites are advanced materials which consists of two phases i.e. matrix and the reinforcement for example, SiC, B4C, TiC, Al2O3 are hard reinforcements to fabricate composite materials [2]
Summary
Due to the improved mechanical and tribological properties, aluminium metal matrix composites (AMMC's) got great importance and became a part of aviation and automobile/vehicle industries. The friction and wear performance of various hybrid metal matrix composites and the important parameters which influence the wear and friction like applied load, sliding distance and reinforcement percentage were reported by many authors [3, 4, 5, 6, 7]. Baradeswaran et al studied the wear behavior of A7075/graphite/Al2O3 hybrid composites and reported that the friction coefficient of 7075 alloy decreases with 5 percent addition of graphite and up to 8 percent addition of Al2O3 [8]. In the present study the friction and wear behaviors of 356 aluminium alloy reinforced with graphite and granite dust particles were analyzed by taguchi and ANOVA techniques at different field conditions
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