Al-Ti-C中间合金晶粒细化剂的合成及其细化晶粒作用

PREPARATION OF AlTiC MASTER ALLOYS ANDTHEIR GRAIN REFINING PROPERTIES

根据液体蒸气压与温度遵从克劳修斯克莱贝龙方程的原理，找到了制备ＡｌＴｉＣ中间合金的一种新工艺。合成的ＡｌＴｉＣ中间合金含有大量细小的ＴｉＣ相及少量粗大的条状Ａｌ３Ｔｉ相，它具有优异的细化αＡｌ晶粒的性能。ＴｉＣ相质点团是αＡｌ有效的异质结晶核心。

Based on ClausiusClapeyron equation, a new technology to prepare AlTiC master alloys was developed. Synthesized AlTiC master alloys containing a number of fine TiC particles and a few Al3Ti flakes possess excellent grain refining properties on aluminium. The clusters of TiC particles are effective nuclei of αAl, which is attributed to physical and chemical roles of depressions on the clusters.