FATIGUE BEHAVIOR OF AL2O3 SHORT FIBER REINFORCED ALUMINUM-ALLOY

被引:5
|
作者
LIU, XC
BATHIAS, C
机构
[1] CNAM, Chaire de Métallurgie, Paris, 75003
关键词
D O I
10.1111/j.1460-2695.1992.tb00037.x
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The room temperature fatigue strengths of Al-7Si-0.6Mg and Al-5Si-3Cu-1Mg composites randomly reinforced with Al2O3 short fibres were determined using a stress ratio of 0.1, a frequenCy of 50 Hz. The fatigue strength of the composites under these testing conditions can be expressed by a single curve-fitting equation. The effect of surface roughness on fatigue strength was also studied and the results show that these composites are not sensitive to surface roughness. The orthogonal growth of cracks is an important fatigue fracture mechanism in these composites. The residual strength decreased as the fatigue load increased.
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页码:1113 / 1123
页数:11
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