Open AccessMicrostructure and Mechanical Behaviour of AZ91d Magnesium Composite Reinforced With B4C and Graphite by Casting Process
Author(s) -
I. Aatthisugan,
Aleena Rose
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/912/3/032069
Subject(s) - microstructure , materials science , graphite , ultimate tensile strength , composite material , composite number , rockwell scale , magnesium alloy , alloy , casting , porosity , boron carbide , metallurgy
In this study, we have manufactured AZ91D magnesium - based alloy and its composite reinforced with boron carbide (B 4 C) and Graphite (Gr) at various weight percentages by bottom pouring stir casting process. The work is aimed at comparing the microstructure and mechanical properties of developed composites with its matrix AZ91D magnesium alloy. The B 4 C reinforcement particles were added 1.5, 3, 4.5 weight percentage respectively to the matrix material and also solid lubricant graphite was added 1.5 weight percentage into composite. Density, Porosity, Rockwell hardness test, tensile test, and Optical Microstructure were evaluated. The developed composites reveal increased 11.18% hardness value when compared to base material, which could be accredited to the occurrence of B 4 C particles. Also, this study indicates that increase in percentage addition of B 4 C and graphite leads to increase in density and tensile strength of the developed composites. Optical microstructure images show the uniform distribution of particles into matrix.