Effects of squeezing casting parameters on mechanical properties and microstructure of ZL102 alloy components before and after heat treatment were investigated by orthogonal tests.The results show that grain size in the squeezed casting alloy components is finer than that in permanent mold castings.Compared with that of squeezed castings before heat treatment

the grain size in the squeezed castings after heat treatment is refined with more uniform distribution

meanwhile

tensile strength is improved by 4.5%

and elongation is increased from 0.74% to 1.78%.Through analyzing nine sets of processing parameters

the optimized processing parameters are presented as follows:pressure of 100 kPa

preheating mould at 150 ℃ and pouring at 630 ℃ as well as holding pressure for 14 s.