Effects of Die Temperature of SSS Die Casting on the Microstructure and Mechanical Properties of ADC12 Aluminum alloy

In the present paper, the effects of different die temperatures on microstructures and mechanical properties of aluminum alloy ADC12 at Super Slow Speed (SSS) die casting have been investigated, in order to optimize the die-casting process and its parameters. The results show that under SSS experimental condition, the density of castings is higher than that of general die castings. Die temperature has the best value, when the die temperature is 150 degrees C, smaller dendrites are distributed in the hardened surface layer, and the eutectics structure of and Si changes from needle-like structure into herringbone structure. The properties of the die casting are significantly influenced by the die temperature, the optimum die temperature is 150 degrees C.