| 离心铸造Al—20wt%Si合金自生表面复合材料的组织与性能 |
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| 引用本文： | 王渠东,金俊泽.离心铸造Al—20wt%Si合金自生表面复合材料的组织与性能[J].航空材料学报,1997,17(2):7-13. |
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| 作者姓名： | 王渠东 金俊泽 |
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| 作者单位： | 上海大学!上海大学材料学院275信箱，200072，大连理工大学 |
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| 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。
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| 关 键 词： | 离心铸造 过共晶Al-Si合金 自生复合材料 表面复合材料 硬度 耐磨性 断裂 |
STRUCTURE AND PROPERTIES OF IN-SITU SURFACE COMPOSITES OF Al-20wt%Si ALLOY FABRICATED BY CENTRIFUGAL CASTING |
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| Wang Qudong,Jin Junze.STRUCTURE AND PROPERTIES OF IN-SITU SURFACE COMPOSITES OF Al-20wt%Si ALLOY FABRICATED BY CENTRIFUGAL CASTING[J].Journal of Aeronautical Materials,1997,17(2):7-13. |
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| Authors: | Wang Qudong Jin Junze |
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| Institution: | Wang Qudong;Jin Junze(Shanghai University) (Dalian University of Technology) |
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| Abstract: | 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. |
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| Keywords: | centrifugal casting hypereutectic Al-Si alloy in situ composites surface composites hardness wearability fracture |
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