Study the effect of magnesium addition on microstructure, electrical conductivity and some mechanical properties of pure aluminum

Abstract EN

In this research study the effect of addition of magnesium on the mechanical properties (Hardness , yield strength , Ultimate stress) for pure aluminum and also microstructure , density , in addition to the electrical conductivity .

three alloys were prepared by change ratios add magnesium ( 5% , 10%,15% ).The results showed that the increase proportion of the magnesium added to pure aluminum caused an increase in the yield stress and improving ratio reach to 78.46% ,an increase in ultimate stress and improving ratio reach to76.92% at ratio(15% ), and an increase in the hardness to value (91.9 Hv) and improving ratio reach to 90.78% at ratio (15 %) while the decrease in electrical conductivity to the value of (0.596 *106 -1 .m-1 ) while there is a decrease in the density to (2.371 g/cm3 ) when the ratio of magnesium added to the pure aluminum increases.

A change in microstructure and regular distribution of magnesium on the boundary of crystalline for alloys , has also been noticed