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Solid Particle Erosion Behavior of Metal Matrix Composites

1996; SAGE Publishing; Volume: 30; Issue: 15 Linguagem: Inglês

10.1177/002199839603001503

1530-793X

Nobuyuki Miyazaki, S. Funakura,

Particle Dynamics in Fluid Flows

Phenomenological studies on the erosion of metal matrix composites (MMCs) have not been done enough. So experiments were carried out to clarify the effects of fiber volume fraction, type of reinforcement fibers and impact angle on the solid particle erosion behavior of MMCs. Three kinds of MMCs were used for the erosion experiments. They were the aluminum 6061 alloy reinforced by βSi 3 N 4 whiskers, the aluminum 1070 alloy unidirectionally reinforced by Si-Ti-C-O fibers and the pure aluminum reinforced by SiC plain-woven cloths. In the case where the sizes of reinforcement fibers are much smaller than those of particles impacted, almost all the fibers removed from a MMC are included in a matrix material removed by the impact of particles. In this case, the difference in erosion rate is small between a MMC and the corresponding matrix material. In the case where the reinforcement fibers are included in the form of unidirectionally long fibers or cloths, a lot of fibers are removed from an eroded surface of a MMC. In this case, a MMC has much larger erosion rate than the corresponding matrix material.