Structural heredity of TiC and its influences on refinement behaviors of AlTiC master alloy

来源期刊：中国有色金属学报(英文版)2003年第4期

论文作者：王振卿 刘相法 柳延辉 张均燕 于丽娜 边秀房

文章页码：790 - 793

Key words：heredity phenomenon; AlTiC master alloy; TiC; grain refinement

Abstract: Heredity of microstructure in AlTiC master alloy, grain refiners, was analyzed. It is found that, for morphologies and distributions of TiC particles, there are visible heredity which originates from raw materials or processing methods of Al melt, and will ultimately be transferred to the solid state structure through the melt stage, and this phenomenon can cause hereditary influences on refinement: formation of chain-like TiC morphology results in rapid refinement fading behavior; distribution of TiC along grain boundaries greatly reduces refinement efficiency. Controlling of structural heredity through proper selections of raw materials and processing parameters is of great importance in obtaining ideal microstructures and improving refinement behaviors of AlTiC master alloys.