AZ91D镁合金在水介质下的冲击磨损特性研究

The impact wear behavior of AZ91D magnesium alloys in de-ionized water

研究了AZ91D镁合金在冲击载荷和去离子水介质综合作用下的磨损特性。结果表明,镁合金表面冲击斑深度及面积随冲击次数的增加而增加;冲击磨损初期,损伤的主要形式为塑性变形及粘着磨损,随着表面塑性耗竭,微观疲劳裂纹产生;磨损后期,水介质的腐蚀作用明显,加速了材料表面的损失。

The impact wear behavior of AZ91D magnesium alloy s in de-ionized water has been investigated. The results showed that the depth and area of wear scar increased with the impact cycles. The damage of the AZ91D magnesium alloys at the initial stage was characterized by cyclic plastic deformation and adhesion, and then micro-crack was found to form after the plastic deformation of the surface. At higher number of cycles, the corrosive effect of water became obvious and thus accelerated the loss of materials.