تاثير تركيب شيميايي بر ريز ساختار كامپوزيت هاي فروتيك

The Effect of Chemical Composition on Microstructure of FERROTIC Composites

The effect of titanium content from 3 to 10 Wt.% on the microstructure of Fe/TiC metal matrix composites was studied. The in-situ melting of Fe - 4 Wt.% C and Fe - 72 Wt.% Ti caused reaction between carbon and titanium which produced titanium carbide particles within the melt. The amount of TiC particles and the type of phases present in the matrix were related to primary chemical composition of the melt. Type and amount of matrix phases, shape, size, and distribution of the secondary phase were identified by an optical microscope equipped with micro hardness tester, image analyzer, and X-ray diffractometer. It was found that an increase in titanium content increases the amount of titanium carbide particles and pearlite and decreases eutectical cementite in the matrix.