【摘要】 利用高温静态压缩流变仪研究了半固态非枝晶组织Al－7％Si合金在固液两相区压缩变形时的液相分布。以不同应变率和变形量对小圆柱体试样进行压缩变形，试验结果发现应变率和变形量强烈影响挤压中半固态合金坯料的液相偏析。揭示了半固态金属成形过程中应变率和变形量对液相偏析影响的规律。更多还原

【Abstract】 The liquid phase distribution of semi-solid nondendritic alloys deformed by compression in the solid-liquid zone has been investigated with the high temperature static compressive rheological apparatus. Cylindrical samples are extruded at different strain rate. The results show that the engineering strain affects strongly the liquid phase segregation of semi-solid alloy billets in compression. The effects of strain rate and engineering strain on liquid phase segregation in the process of semi-solid metal forming have been revealed in this paper.更多还原