The enhancement of wear properties of squeeze-cast A356 composites reinforced with B4C particulates

摘要: Abstract In the present study, squeeze-cast A356 matrix composites reinforced with B4C particles were prepared and different volume fractions of various sizes incorporated into aluminum alloy by a mechanical stirrer. Wear properties unreinforced vol.% boron carbide measured compared. It is noted that exhibit better wear resistance compared to alloy. According differences in rates composites, two separate wear-rate regimes identified as low- high-wear-rate regimes. observed all composite samples 1 μm show high wear-rate, regardless particle fraction. However, none containing 50 display this type regime. Microscopic examination using scanning electron microscope equipped an energy-dispersive spectrometer, was carried out on worn surfaces, subsurfaces, deb...