Hybrid composites - Metallic and ceramic reinforcements influence on mechanical and wear behavior

Regarding wear behavior, reciprocating pin-on-plate wear tests were performed for unreinforced AlSi; AlSi-Ti composites and AlSi-(Ti-SiC) hybrid composite against a gray cast iron (GCI) counterface. The wear mechanisms for all the tested tribopairs are presented and discussed. It was observed that the wear behavior of the AlSi-Ti/GCI and also AlSi-(Ti-SiC)/GCI tribopairs are improved when compared with the AlSi/GCI system. AlSi-11.25%Ti-5%SiC hybrid composite exhibited the highest improvement in wear rate.