【摘要】 对Al Si合金在 3.6～ 5 .5GPa高压下凝固形成的组织与常压凝固组织进行了对比 ,对高压下的胞枝晶转变进行了分析。发现高压对合金固溶度和扩散系数的影响是引起高压凝固组织变化的主要原因。更多还原

【Abstract】 The structure of Al Si alloy solidified at 3.3～5.5 GPa pressure was compared with that at normal pressure, and the mechanism of the change from cellular crystal to dendritic crystal was studied. The results show that the changes of solid solubility and diffusion coefficient at high pressure are the main cause of structure changes.更多还原