Research of rheo model of semi-solid Mg2Si/AM60 magnesium matrix composites

The apparent viscosities of semi-solid Mg₂Si/AM60 magnesium matrix composites at steady state were tested.. The results show that the apparent viscosities of semi-solid Mg₂Si/AM60 magnesium matrix composites at steady state increase with increasing solid fraction f_α-Mg and volume fraction of Mg₂Si f_Mg2Si and decrease with increasing shearing rate γ. An equation that shows the effect of f_Mg2Si, f_α-Mg, γ on the apparent viscosities was established as following, η_mmc = 15.65exp(5.15f_α-Mg)· γ^-0.88·(1+18.35f_Mg2Si+163.69f_Mg2Si²).