The sliding wear resistance behavior of nial and SiC particles reinforced aluminum matrix composites

摘要

The sliding wear resistance behavior of NiAl and SiC particles reinforced aluminum alloy matrix composites against S45C steel was studied. Experiments were performed within a load range of 3.5 N to 82.7 N. At low loads, the wear resistance of the SiCp/Al and NiAl/Al composites was superior to that of unreinforced aluminum alloy. With increasing the applied load, the wear rates of the composites increased to levels comparable to those of unreinforced matrix alloys. The wear rates of NiAlp/Al and SiCp/Al composites above 13.5 N were much lower than those of aluminum alloy. The wear rates of steel against a aluminum alloy were lower than those against the SiCp/Al composites. The NiAlp/Al composites worn the steel at the maximum wear rate at lower loads near 5 N. As load increased, the wear rates of steel against NiAlp/Al became smaller and were almost the same as those worn against aluminum.