Effects of rare element and pressure on the microstructure and mechanical property of AZ91D alloy.

Highlights: [•] Microstructure of AZ91D alloy can be refined apparently by rare element Ce. [•] Pressurized solidification favors the flow and feeding capacity of residual liquid. [•] Micro-segregation and eutectic phase are reduced by strengthened flow behavior. [•] Shrinkage void is suppressed by the enhanced feeding capacity. [•] Both grain refinement and denser structure improve the tensile strength. [Copyright &y& Elsevier]