Effects of technological parameters on microstructures and properties of in situ TiC_p/Fe composites

来源期刊：中国有色金属学报(英文版)2000年第2期

论文作者：严有为 魏伯康 傅正义 林汉同 袁润章

文章页码：187 - 191

Key words：in situ reaction; microstructure; property; TiC_p/Fe composites

Abstract: The effects of the reactive temperature, time and the cooling rate of an Fe-Ti-C alloy melt on the microstructures and mechanical properties of in situ TiC_p/Fe composites were investigated. The results show that the hardness and impact toughness of the prepared composites increase with increasing the reactive temperature, because more and finer TiC particles are formed in the higher temperature melt. However, after the TiC synthesis reaction in the melt completed, the impact toughness of the composites will decrease if the melt reactive time is further prolonged, owing to the coarsening of the formed TiC particles. Under the present experimental condition, the cooling rate of the melt containing dispersions has little influence on the number, size and distribution of the particles in the composites.