Wear behavior of Al–Cu and Al–Cu/SiC components produced by powder metallurgy
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In the present study, the dry sliding wear behavior of some powder metallurgy (P/M) Al–Mg–Cu alloys with different weight percentage of Cu (0, 1, 2, 3, 4, and 5 wt%) and corresponding metal matrix composites reinforced with 5 or 10 vol% silicon carbide particles (SiC) have been carried using pin-on-disk apparatus. The tested specimens were tested against hardened steel disk as a counter face at room conditions (∼20 °C and ∼50% relative humidity). The normal load was 40 N and sliding velocity of counter face disk was 150 rpm (0.393 m/s) and total testing time of 60 min, which corresponds to a distance of 1414 m. Generally, both hardness and wear resistance were enhanced by the addition of Cu and/or SiC to the Al-4 wt% Mg alloy. The formations of mechanically mixed layer (MML) as a result of material transfer from counter face disk to the samples and vice versa were observed in all tested specimens.
KeywordsWear Resistance Wear Rate Wear Surface Silicon Carbide Particle Mechanically Mixed Layer
The authors gratefully acknowledge the assistance of the Committee of Scientific Research/Jordan University of Science and Technology for its support of this research (grant no. 29/2007). The authors would like also to gratefully acknowledge the use of Machine shop and the laboratory facilities at Jordan University of Science and Technology, Irbid, Jordan.