研究了挤压变形对铸态ＡｌＴｉ、ＡｌＴｉＢ和ＡｌＴｉＣ中间合金的显微组织及其细化性能的影响。变形引起铸态中间合金中的Ａｌ３Ｔｉ相断开，并使团簇状ＴｉＢ２和ＴｉＣ粒子趋于分散。变形使３种铸态中间合金的细化性能分别产生了不同的变化，初步探讨了原因 The effects of extrusion deformation on microstructure and refining properties of as-cast AlTi, AlTiB and AlTiC master alloys were studied. The deformation causes the Al3Ti phase in the as-cast master alloy to break, and the clustered TiB2 and TiC particles tend to disperse. Deformation causes the refinement properties of the three kinds of as-cast master alloys to have different changes respectively,