采用宏观硬度测定及差热分析法 (DSC)研究了莫莱石短纤维增强ZL10 7合金复合材料的时效特性。结果表明 ,复合材料中GP区的形成因增强相的加入在一定程度上被抑制 ,在 140℃时效初期基体合金表现出较快的硬度增加趋势 ;在 2 0 5℃时效 ,复合材料表现时效加速现象。随纤维加入量的增加 ,基体中二次Si的析出加快 The macroscopic hardness and differential thermal analysis (DSC) were used to study the aging characteristics of Mullite short fiber reinforced ZL10 7 alloy composites. The results show that the formation of GP zone in the composite material is inhibited to some extent by the addition of the reinforcing phase, and the matrix alloy exhibits a rapid increase in hardness at the initial aging temperature of 140 ° C .; the composite material accelerates aging at the aging of 205 ° C phenomenon. With the increase of fiber addition, the secondary Si in the matrix precipitates faster