Modification time and content of Ce have the significant effects on grain refinement in the eutectic Al-Si alloy. The desirable modification effects can be observed with 1% Ce addition for 60~90 min.

• Ce的变质处理时间和加入量也会影响变质效果,Ce在共晶Al-Si合金中的最佳加入量(质量分数,下同)为1%25,最佳变质处理时间为60~90min。