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研究增强颗粒Mg2Si对镁基复合材料摩擦磨损性能的影响,讨论Si加入量、载荷和滑动速度对Mg2Si/AM60镁基复合材料磨损性能的影响。结果表明,向镁合金中加入合金元素Si,可原位生成增强颗粒Mg2Si,增强颗粒Mg2Si可明显提高AM60镁合金的磨损性能。随着载荷和滑动速度的增加,AM60镁合金和Mg2Si/AM60镁基复合材料的磨损量都增大。AM60镁合金的磨损机制为粘着磨损。随着载荷的增大,Mg2Si/AM60镁基复合材料的磨损由磨粒磨损向粘着磨损转变。
The effects of Mg2Si on the friction and wear properties of magnesium matrix composites were investigated. The effects of Si loading, loading and sliding speed on the wear properties of Mg2Si / AM60 magnesium matrix composites were investigated. The results show that addition of alloying element Si to the magnesium alloy can produce the reinforced particles Mg2Si in situ and the enhanced particle Mg2Si can obviously improve the wear performance of the AM60 magnesium alloy. With the increase of load and sliding speed, the wear amount of AM60 magnesium alloy and Mg2Si / AM60 magnesium matrix composite increases. The wear mechanism of AM60 magnesium alloy is adhesive wear. With the increase of load, the wear of Mg2Si / AM60 magnesium matrix composites changes from abrasive wear to adhesive wear.