Abstract
In comparison to unreinforced alloy, ZA27 reinforced with hard ceramic particles possesses higher strength and hardness. They can be used for automotive parts, machine tools, strength plants, Heavy engineering industries. The aim of the present work is to investigate the effects of adding micro size-B4C particles to ZA27 alloy on the mechanical properties of the composites.The ZA27 alloy reinforced with 3wt. %, 6 wt. %, and 9wt. % of B4C particulate composites were fabricated by stir casting method.Microstructure and mechanical properties such as hardness, ultimate tensile strength and yield strength and percentage elongation of the composites were examined. Microstructure of the samples has been investigated by using optical microscopy and Scanning Electron Microscope to know the micro level uniform distribution of reinforcement particulates in the matrix. It was observed that the hardness, ultimate tensile strength and yield strength of alloy increased as the level addition of B4C particulates increased by 3wt. %, 6wt. % and 9wt. %.From the study, it was revealed that the percentage of elongation decreased as the addition of B4C increased with 3wt. %, 6wt. % and 9wt. %
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