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研究了雾化沉积制备过共晶Al－Si－X合金过程中，气／液比对沉积坯中初晶硅相尺寸的影响，观察了随热挤压前预热温度的升高，沉积坯中初晶硅相的长大情况．并通过相同温度不同挤压比下挤压组织的比较，讨论了热挤压时挤压比对过共晶Al－Si合金中初晶硅相细化过程的影响，提出细化材料组织的最佳工艺参数．
The effect of gas / liquid ratio on the size of primary Si phase in the deposited billet during the preparation of hypereutectic Al-Si-X alloy by atomization deposition was studied. The effects of preheating temperature, In the initial growth of the silicon phase. The effect of extrusion ratio on the primary Si phase refinement in hypereutectic Al-Si alloy was also discussed through the comparison of the compression ratio under the same temperature and different extrusion ratio. Good process parameters.