AL-SIO2 METAL MARTIX COMPOSITES

ABSTRACT Aluminium - based metal matrix composites (AMMCs) are fast emerging due to their favorable properties like light weight, low density, high specific strength, high hardness, high temperature and thermal shock resistance, superior wear and corrosive resistance as compared to ordinary alloys is another added property. In the present work samples were prepared using Al- SiO2 and machining operation is performed to obtain required shape and size for smoothing the surfaces. Also performed Prerequisite operation for performing tensile test, impact, hardness and compression and microstructure. It is observed from the results that significant increase of reinforcement of element as well as produces better mechanical properties such as impact toughness and hardness. But tensile strength showed different trend machinability properties of the selected material. Microstructure analysis is done on the specimens and it was found that for different weight fractions of SiO2 matrix composites and the MMC phases are uniformly distributed. Successful incorporation of SiO2 in base pure aluminium is found by the micro structural examination in the Optical microscope. Upon examination, it is observed that the fine grains in the matrix are SiO2 and the coarse grains are Al. Similar results for the different specimens of variable compositions are evaluated.