By means of XRD,SEM and other tools,the paper studies microstructures,shapes and mechanical properties of primary crystal and eutectic silicon of Al-Si alloy treated by P and RE complex modifications.

• 采用扫描电镜、X射线衍射、材料性能检测等实验手段对复合变质处理后的过共晶铝硅合金显微组织、形貌和力学性能进行了分析。