离心铸造Al-16wt%Si合金自生梯度复合材料  

IN SITU GRADIENT COMPOSITES OF Al-16wt%Si ALLOY BY CENTRIFUGAL CASTING

作　　者：谭银元[1] 

机构地区：[1]武汉船舶职业技术学院船舶工程系,武汉430050

出　　处：《复合材料学报》2002年第5期47-51,共5页Acta Materiae Compositae Sinica

基　　金：武汉船舶职业技术学院教科研重点课题 (编号 :0 1~ 0 5 )

摘　　要：本文作者通过改变离心铸造的转速 ,获得了内层有较多初晶 Si其余部分为共晶组织或初晶 Si由外向内偏析的 Al- 16 wt% Si合金自生梯度复合材料。分析了复合材料的形成过程 ,考察了复合材料的组织、硬度。In situ gradient composites of Al 16wt%Si alloy, which possess the microstructures of accumulated primary silicon in the inner layer and eutectic in the rest layers or accumulated primary silicon from the outer layer to the inner layer,have been achieved by changing the rotation rate of centrifugal casting. The formation process of the composites has been analyzed, and the microstructure, hardness, wear ability and the phase structure of the composites have been also investigated.

关 键 词：离心铸造 Al-16wt%Si合金 自生复合材料 表面梯度复合材料 组织 硬度 耐磨性 铝合金 结构 

分 类 号：TB331[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—金属材料]