THE INTERFACE IN CARBON-MAGNESIUM COMPOSITES - FIBER AND MATRIX EFFECTS

被引:15
作者
HALL, IW [1 ]
机构
[1] UNIV DELAWARE,CTR COMPOS MAT,NEWARK,DE 19716
关键词
D O I
10.1007/BF03163521
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Two types of carbon fibres were incorporated into magnesium alloy matrices by squeeze casting. Mechanical testing showed that surface treatment of the fibres led to a marked increase in the interfacial shear strength and a corresponding decrease in the longitudinal tensile strength. A small amount of fine Al4C3 forms at the fibre matrix interface in simple binary Mg-Al matrices. Mg17Al12 and Mg2Si form at the interface in the Mg-Al-Si matrix: precipitation is greatly enhanced by residual stresses at the interface and many fibres are surrounded by a brittle layer leading to inferior mechanical properties.
引用
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页码:776 / 781
页数:6
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