In the paper

the role of rich-Y rare earth in the modification of ZL102 alloy has been introduced. The optimum amount of rare earth added to the alloy and the influence of holding time and remeltiagstimes on the modification has ceen discussed.lt has been point out that rich-Y rare earth has an excellent modifying effect on ZL102 alloy

there will still be a good effect of modification after holding time as long as 4 hours and remelt times as high as 9. After adding rich-Y rare earth

no manifest changes in the casting properties of the alloy has been observed.