This paper is a study about the aluminium
series 7075. 7075 aluminium alloy's composition roughly
includes 5.6–6.1% zinc, 2.1–2.5% magnesium, 1.2–1.6%
copper, and less than a half percentage of silicon, iron,
manganese, titanium, chromium, and other metals. By
this study we trying to improve the properties of AL7075
to the properties of 5 series. We can apply this to Marian
and Aerospace applications because of the improved
mechanical properties. By the addition of silicon nitride in
different compositions (2%, 4%, 6%) to the Al7075 and
we cast it and testing it. This theme developed from the
studies of deferent AL material and its behaviour. We can
see that the addition of a different compound to the AL
helps to improve its properties and the improved
materials use in different modes.
Keywords : al7075,Silicon Nirtride, Ansys, Stir Casting.