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采用蛇形通道法制备ZL101铝合金半固态浆料,研究浇注温度、弯道数量、蛇形通道温度对ZL101铝合金半固态浆料显微组织的影响。结果表明:浇注温度在630~680°C范围时可获得满意的ZL101铝合金半固态浆料,随浇注温度的降低,初生α(Al)由蔷薇状向近球状或球状组织演变。在相同浇注温度下,弯道数量增加,可以改善初生α(Al)晶粒的形貌,降低晶粒尺寸。当蛇形通道温度提高时,通过降低浇注温度,同样可以获得合格的半固态浆料。弯道内的合金熔体具有“自搅拌”作用,使初生晶核演变为球状或近球状晶粒。
The ZL101 aluminum alloy semi-solid slurry was prepared by the serpentine channel method. The effects of pouring temperature, the number of curves and the temperature of the serpentine channel on the microstructure of ZL101 aluminum alloy semi-solid slurry were investigated. The results show that ZL101 aluminum alloy semisolid slurry can be obtained when the pouring temperature is in the range of 630 ~ 680 ℃. With the decrease of pouring temperature, the primary α (Al) evolves from rosette to nearly spherical or spherical structure. At the same pouring temperature, the number of corners increases, which can improve the morphology of primary α (Al) grains and reduce the grain size. When the temperature of the serpentine channel is increased, a suitable semi-solid slurry can also be obtained by lowering the pouring temperature. The alloy melt in the bend has the effect of “self stirring”, so that the primary nuclei evolve into spherical or nearly spherical grains.