Sliding wear behaviour of Al-Si-Cu composites reinforced with SiC particles

被引:20
|
作者
Zou, XG [1 ]
Miyahara, H [1 ]
Yamamoto, K [1 ]
Ogi, K [1 ]
机构
[1] Kyushu Univ, Grad Sch Engn, Dept Mat Sci & Engn, Higashi Ku, Fukuoka 8128581, Japan
关键词
D O I
10.1179/026708303225007997
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The sliding wear behaviours of an unreinforced monolithic Al-Si-Cu alloy and SiC particles reinforced composites containing 5, 13, 38 and 50 vol.-% with diameters of 5-5, 11-5 and 57 mum were investigated. The results showed that the wear resistance of the composites is much higher than the monolithic alloy, and the larger and the more SiC particles, the higher the enhancement of the wear resistance. Metallographic examinations revealed that the subsurface of worn composites was composed of both fragmented particles and deformed matrix alloy. The depth of the particle fracture zone in the subsurface varied in the range of 20-35 mum at a sliding distance of 1-8 km, while the plastic deformation zone of the worn subsurface on monolithic alloy was more than 100 mum. Scanning electron microanalyses of the worn surface, subsurface microstructure and debris suggested that the depth of the particle fracture zone became smaller as the diameter of SiC particles increased. Increasing the hardness and decreasing the applied wear stress changed the debris morphology from flake to very small lumps.
引用
收藏
页码:1519 / 1526
页数:8
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