通过泡沫载体的引载作用实现TiC增强颗粒混入钢液,在液态模锻工艺条件下成型20％ TiC/铸钢(ZG270-500)制件.计算分析了泡沫载体消失气化时TiC增强颗粒在气隙中的运动行为及其进入钢液的条件.实验结果表明,TiC增强颗粒的运动速度随浇注温度、充型速度和排气孔口与型腔横截面积比的增大而递增.当钢液前沿TiC颗粒的运动速度大于临界速度时才能进入钢液,且TiC增强颗粒运动速度越大,越容易进入钢液,分布越均匀.
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