Studies on 3 and 9 wt. % of B4C Particulates Reinforced A17025 Alloy Composites.

In the present investigation sysnthesis, microstructure study and tensile behavior of 3 and 9 weight percentage of B4C particulate reinforced Al7025 alloy composites has been reported. Al7025 matrix composite containing boron carbide were fabricated by conventional liquid stir casting method. The composites containing 3 and 9 wt. % of B4C particulates were fabricated for the study. The microstructure of the composites were examined by scanning electron microscopy. Further, tensile behavior of as cast Al7025 alloy, Al7025-3 wt. % B4C and 9 wt. % B4C composites were studied. Tensile properties like ultimate tensile strength, yield strength and percentage elongation were evaluated as per ASTM standards. Microstructural observation revealed the uniform distribution of particles in the Al7025 alloy matrix. From the analysis, it was found that the ultimate tensile strength and yield strength of composites were increased due to increasing amount of boron carbide particle in the Al7025 alloy matrix. Percentage elongation of the composite decreases with increasing order of B4C particulates in soft Al alloy. Keywords: Al2219 Alloy, TiC, Wear, Worn Surface, Metal Matrix Composites [ABSTRACT FROM AUTHOR]