稀土铝合金斜坡振动铸造组织分析  

Analysis on Casting Microstructure of RE-Al-Alloy with Slope Vibration Process

作　　者：易荣喜[1] 李明珠[2] 谢世坤[1] 郭秀艳[1] 

机构地区：[1]井冈山大学工学院,江西吉安343009 [2]上海材料研究所上海200437

出　　处：《热加工工艺》2009年第17期10-12,共3页Hot Working Technology

基　　金：江西省教育厅科技研究项目(GJJ08429)

摘　　要：采用斜坡振动工艺生产Al7Si2RE合金,获得了符合半固态加工要求的细小、近球状非枝晶微观组织。实验表明:冷却方式和浇注方式对合金微观组织有明显的影响。近液相线温度下斜坡振动铜模水冷浇注的Al7Si2RE合金组织为细小均匀的等轴晶,晶粒平均直径为48.3μm,晶粒平均圆度为1.92。Using slope vibration casting process in the production of AI7Si2RE alloy, the small, nearly globular non-dendritic microstructure with the semi-solid processing requirements was obtained. Experiments show that the cooling method and pouring process have significant impact on the alloy microstructure. The water-cooled copper mold casting with slope vibration at the temperature near liquidus can obtain A17Si2RE alloy with small homogeneous equiaxed grains, the average grain diameter is 48.3 μm, the average grain roundness is 1.92.

关 键 词：Al7Si2RE合金 稀土元素 凝固曲线 斜坡振动 微观组织 

分 类 号：TG292[金属学及工艺—铸造]