Casting of Fe-Cr-Tic Composites Using in-Situ Method

Abstract

Titanium carbide is varying from 3.5 to 14% volume fraction was reinforced by the direct reaction of pure titanium in molten Fe-Cr alloy. To improve precipitation and distribution of titanium carbide in Fe-Cr matrix, a simple casting technique has been developed successfully. A protective layer on the molten metal is used to avoid oxidation of titanium during melting and casting. The kinetic and thermodynamic studies support the precipitation of TiC in molten Fe-Cr alloy at 1600 o C reaction temperature. Based on the amount of titanium and chromium present in Fe-Cr molten alloy, the size and shape of the chromium and titanium carbide particles depends.