Influence of Addition of Silicon on Mechanical Properties of Aluminium – Zinc Alloy

In this investigation, the experiment was conducted to analyze the mechanical properties such as Yield Strength, Ultimate Tensile Strength, Hardness on Al-Zn alloy of different composition Specimen 1 (89.4%Al4%Zn1%Mg0.6%Mn) , specimen 2 (86.4%Al4%Zn1%Mg0.6%Mn), specimen 3 (84.4%Al4%Zn1%Mg0.6%Mn) by the addition of 5%, 8% and 10% silicon. It was found that the mechanical properties were improved by the addition of silicon. It was noted that the maximum yield strength 103 N/mm2, Ultimate Tensile Strength of 116 N/mm2 and Hardness of 60.9BHN were obtained for the addition of 10% silicon to aluminium-Zinc alloy. Also, SEM (Scanning Electron Microscope) analysis was taken and presence of silicon content was analyzed.