应用LSPSF流变铸造工艺,制备了A356铝合金半固态浆料。应用基于连续切片技术的三维重构方法,对流变铸造A356铝合金微观组织进行了三维重构,获得了A356铝合金微观组织的三维空间结构及其分布状况。定义了三个定量表征的参量,从三维的角度描述了初生固相的数量、大小和平均等效直径。得出流变铸造A356铝合金微观组织的固相分数f V=74%,形状因子F=0.51,平均当量直径=91.45μm。 LSPSF rheological casting process was used to prepare A356 aluminum alloy semi-solid slurry. The three-dimensional reconstruction of rheo-cast A356 aluminum alloy was carried out using the three-dimensional reconstruction method based on continuous slicing technique. The three-dimensional structure and distribution of A356 aluminum alloy microstructure were obtained. Three quantitatively defined parameters are defined, describing the number, size and average equivalent diameter of the primary solid phase from a three-dimensional perspective. The rheological cast A356 aluminum alloy microstructure of the solid fraction fV = 74%, shape factor F = 0.51, the average equivalent diameter  = 91.45μm.