【摘要】 采用搅拌摩擦加工技术(Friction Stir Processing,简称FSP)对AZ31镁合金进行了表面改性,分别实验了加入纳米SiC粒子的FSP试样和没有加入粒子的FSP试样的摩擦磨损行为。研究结果表明:加入纳米SiC粒子的FSP试样的表面硬度明显高于没有加入粒子的FSP试样的表面硬度;由于纳米SiC粒子的加入,显著细化了镁合金基体的晶粒尺寸,与未加入粒子的FSP试样相比,加入纳米SiC粒子的FSP试样表现出更好的耐摩擦磨损性能。更多还原

【Abstract】 AZ31 magnesium alloy surface was modificated by friction stir processing technology.Friction and wear performances were investigated using FSPed AZ31 with nanosized SiC particles and the FSPed AZ31 without particles.The result shows that the microhardness of AZ31 magnesium alloy with nanosized SiC particles is higher than AZ31 magnesium alloy without particles.The AZ31 magnesium alloy with nanosized SiC particles shows better friction and wear resistance compared to AZ31 magnesium alloy without particles,which can be attributed to the incorporation of nanosized SiC particles which refine grain size.更多还原