Evaluation of Mechanical Tribological and Corrosion properties of Heat treated and As cast Aluminium silicon Red mud Cenosphere Hybrid Composites

Abstract

The materials possessing lower density are preferred for automobile, aviation, and naval newlineapplication, because these materials lead to lower fuel consumption. Aluminum is mainly newlinepreferred in the automobile and naval application requires appreciable wear resistance newlinealong with lower density. The low melting point of the Aluminum is added advantage, newlinehence, it can be casted to the desired shape and size easily and any cast component newlinerequires minimum machinability. newlineThe reinforcements used in the research work are cenosphere and red mud. The newlinecenosphere is obtained from the fly ash following the flotation method and the red mud is newlinethe by-product of the bayer s process which is followed to manufacture the Aluminum. newlineThe cenosphere particles used for the research work consisting of about 94% between 106 newlinemicrons to 150 microns and red mud of size around 106 microns were used for the newlineresearch work. newlineThe research work containing fabrication of the composite following stir casting process newlineusing and the desired quantity of preheated cenosphere and red mud was introduced to the newlinemolten bath as per the rule of mixture. Then the molten HMMCs was poured in the newlinepermanent metal mould. The cast hybrid metal matrix composites was subjected to the newlinesolution heat treatment process followed by aging process. newlineThe microphotographs revealed the presence of the reinforcements in the base material newlineand the distribution of the red mud and cenosphere particulates in the base material was newlineuniform. From SEM studies it is also observed that the interfacial bonding of the newlinereinforcements and the base material are uniform. The physical, mechanical, corrosion, newlinetribological studies were carried out to evaluate the suitability of the material for the newlinepurpose. newlineThe density of the HMMCs was measured using rule of mixtures and verified by newlinefollowing Archimedes principle. The results revealed that the density of the HMMCs is newlinelower than the base material. The hardness test experiments were carried out as per newlineASTM E10 standards, and the hard