摘要
采用热模金属型离心铸造Al－20wt％Si合金，获得了外层聚集粗大初晶Si、中层为共晶组织、内层聚集细小初晶Si的自生三层表面复合材料。考察了复合材料的组织形貌，检测了复合材料的硬度和耐性，分析了复合材料的断裂模式。
In situ three-layer surface composites of Al-20wt%Si alloy which possesses the microstructure of ac-cumulated thick primary Si in outer layer, accumulated fine primary Si in inner layer, and eutectic in mid-dle layer,has been achieved by preheated metal mould centrifugal casting. The structure morphology of thecomposites has been investigated, the hardness,wearability and fracture model of the composites have been analysed.
出处
《航空材料学报》
EI
CAS
CSCD
1997年第2期7-13,共7页
Journal of Aeronautical Materials
基金
国家自然科学基金
关键词
离心铸造
过共晶
铝硅合金
自生
复合材料
centrifugal casting,hypereutectic Al-Si alloy, in situ composites, surface composites,hardness, wearability, fracture
