Evaluation of dry sliding wear behavior of silicon particles reinforced aluminum matrix composites

This paper reports a study on the wear property of powder metallurgy aluminum matrix composites 9Si/Al–Cu–Mg. A ring on rock wear-testing machine is used to evaluate the wear property of the composites, in which a GCrl5 steel ring is used as the counter face material. The wear behavior of the composites under different conditions is studied. The optical microscope and scanning electron microscope are used to analyze the worn surfaces and the subsurface of the composites in order to research the wear mechanism of the composites. Results indicate that the weight loss of the composite were lower than that of the matrix alloy.