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本文论述了ＡｌＳｉ７Ｍｇ合金在半固态状态下的初始结构对压缩变形行为的影响．结果表明：ＡｌＳｉ７Ｍｇ合金坯料的初始显微 结构的固相颗粒尺寸及分布、颗粒形貌、颗粒团聚化程度对半固态合金坯料的表观粘度有重要的影响具有初始细枝晶结构（蔷薇状结 构）的合金应力水平较低，具有中等枝晶和粗枝晶结构的合金应力水平较高．非枝晶组织半固态合金变形时固相颗粒变形力的传递数学 模型为：
This paper discusses the effect of the initial structure of AlSi7Mg alloy on the compressive deformation behavior in the semi-solid state. The results show that the initial microstructure of the AlSi7Mg alloy has an influence on the apparent viscosity of the semisolid alloy billet. The initial microstructure of the AlSi7Mg alloy has an initial fine dendritic structure (rosaceous structure ) Alloy stress level is lower, with moderate dendrites and dendrite structure of the alloy stress level is higher. Non-dendritic semi-solid alloy deformation of solid particle deformation deformation of the mathematical model is: