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The dry sliding wear tests were performed on as-cast samples of A356/20vol.% SiCp composites. The samples were tested by pin-on-disc wear test equipment with different applied load. The wear results show that as-cast samples exhibited better resistance to wear than the T6 treated samples. In addition, as-cast samples exhibited stable friction coefficient values in the range of 0.45-0.5. Wear behavior of as-cast A356/20vol.% SiCp is examined through the observations and analysis of the worn surface, worn subsurface and wear debris. In the low applied load region, wear is occurred mainly by oxidation. With increasing the applied load, mechanical mixed layer (MML) is formed on the worn subsurface and crack is formed on MML. In the higher applied load region, wear is occurred by adhesive and delamination.


The dry sliding wear tests were performed on as-cast samples of A356/20vol.% SiCp composites. The samples were tested by pin-on-disc wear test equipment with different applied load. The wear results show that as-cast samples exhibited better resistance to wear than the T6 treated samples. In addition, as-cast samples exhibited stable friction coefficient values in the range of 0.45-0.5. Wear behavior of as-cast A356/20vol.% SiCp is examined through the observations and analysis of the worn surface, worn subsurface and wear debris. In the low applied load region, wear is occurred mainly by oxidation. With increasing the applied load, mechanical mixed layer (MML) is formed on the worn subsurface and crack is formed on MML. In the higher applied load region, wear is occurred by adhesive and delamination.