Abstract: In this study samples of a composite material were obtained by compossive infiltration of Aluminum-Carbon proformed wires with LY-12 aluminum alloy.Morphology of C/Al composite after high temperature treatments was examined under optical and ShAI.The quantities of the carbide in these samples were determined by gas mass spectrometer.Reaction product was identified by x-ray diffraction.This paper reviewed the behaviour of the C/Al proformed wires in the aluminum melt under high temperature.The interface reaction between carbon and aluminum occures at high temperaure,forming britle layer of aluminum carbide,and it depends on the condition in which it was produced and used.The higher the temperature and the longer the time of the holdings the more obvious the reaction.It is important choosing suitable forming tech nology.It is also available to choose coating on fiber with suitable construction to prevent from interface reaction,and the interface waa influenced by sorts of the fiber and composition of the matrix.