Al-10 Sr master alloy with different states(conventional as-cast state,rapid-solidified state and rolled state)were prepared as modifiers in the experiments,with 0.02 wt.% of Sr.The effects of the size of Al4 Sr phase,modification temperature and holding time on the microstructure of ZL114 A alloy were investigated.Results show that the optimized conditions of ZL114 A alloy modified by conventional as-cast and rapid-solidified Al-10 Sr master alloy were holding 30 min and 15 min at 750℃,respectively.The rol...