A356合金半固态制备工艺研究  

Research on Semi-solid Preparation Process for A356 Alloy

作　　者：易荣喜[1] 谢世坤[1] 郑小秋[1] 郭同燕[1] 

机构地区：[1]井冈山大学工学院,江西吉安343009

出　　处：《热加工工艺》2011年第7期22-24,27,共4页Hot Working Technology

基　　金：江西省教育厅科技研究项目(GJJ08429)

摘　　要：利用振动斜坡浇注工艺制备了A356合金的半固态组织。研究了斜坡长度和振动电压对合金凝固组织的影响。结果表明,振动电压60V、斜坡长度25cm的铜模水冷,在640℃浇注A356合金的组织为均匀、细小和圆整的近球形等轴晶半固态组织;晶粒平均等积圆直径为26.5μm,晶粒形状因子为0.8。The semi-solid microstructure of A356 alloy was prepared by vibrating slope pouring technology. The effects of slope length and vibration voltage on the solidification microstructure of the alloy were also researched. The experiment results show that when the vibration voltage is 60 V, and the slope length is 25 cm, the microstructure of the alloy is homogeneous, small and semi-solid equiaxed grains while pouring at 640℃ by water-cooled copper mold casting, with the average grain diameter of 26.5 μm, and the grain shape factor of 0.8.

关 键 词：等轴晶 振动电压 斜坡长度 微观组织 

分 类 号：TG292[金属学及工艺—铸造]