Abstract
Casted some cast iron and bronze arround solid aluminium bars and tested those structures, hardness and machinabilities.
In cast iron the upper and middle parts of solid aluminium melt, the lower part does not, but in bronze all parts melt. Aluminium bars effect cast iron and bronze structures. Diffusion of aluminium into cast iron are unrecognized but diffusion of copper and tin of bronze are recognized. In cast iron combination parts of melted aluminium have some defect, but in bronze have not.
