Abstract
In the present study, Magnesium Alloy (AZ31) and AZ31-B4C composites reinforced with the varying amount (0–2 wt%) of nano-sized B4C in particulate form are fabricated through an Ultrasonic stir casting process. The mechanical properties and microstructure characterization are mainly investigated. The microstructural characterization is done through an optical microscope (OM) and scanning electron microscope (SEM) to examine the dispersion and homogeneity of B4C particulates in the Magnesium matrix. Elemental analysis is carried using an energy dispersive X-ray Spectrometer (EDAX). EDAX results indicate the presence of different elements such as Mg, B, C, Al, Zn etc. in base alloy and composites. Mechanical properties such as microhardness and density of base alloy and composites are also determined. Hardness and Density are found to increase with the increasing weight percentage of reinforcement. Microstructure examination found equiaxed grains in fabricated Alloy and Nano Composites. The mechanical characterization shows good interfacial bonding between the Mg matrix and B4C reinforcement material.
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