Effect of reinforced aluminium alloy LM30 with pure ceramic particles to evaluate hardness and wear properties

ABSTRACT In this paper, the hardness and wear properties of pure ceramic particles like silicon carbide, boron carbide and graphite are considered in micron size with the reinforced aluminium LM30 metal matrix composites. The stir casting setup is used to prepare the matrix alloy of different compositions i.e. 2, 4 and 6 % of silicon carbide, boron carbide and graphite respectively. The rate of wear in E24 steel disc is found by placing a pin over disc wear test machine under the dry condition. This paper is intended to study the hardness and wear characteristics of all the casted ceramics. The results show that hardness and wear of casted ceramics with RA-MMC has increased in loading and in unloading conditions. Further, it is proved that casting material after stir casting attains a better wear rate and hardness due to better dispersal of micro powder.

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