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采用复合铸造工艺制备AZ31B镁合金及其纳米复合材料,再对所得材料在350°C进行热挤压。采用标准的销-盘式摩擦磨损试验机对AZ31B镁合金及其纳米复合材料的室温滑动磨损行为进行研究。实验条件为法向载荷10N、滑移速度0.60~1.2m/s、滑移距离2000m。采用SEM观察来研究磨损表面的磨损机理。通过构建一个线性回归模型来研究试验参数对磨销磨损率的影响。与AZ31B镁合金相比,由于增强体的作用而导致的硬度增强使复合材料表现出低的磨损率。犁削、犁沟、分层和氧化构成混合的磨损机理。
AZ31B magnesium alloy and its nanocomposites were prepared by compound casting process, and then the resulting material was hot-extruded at 350 ° C. The sliding wear behavior of AZ31B magnesium alloy and its nanocomposites at room temperature was studied using a standard pin-disc friction and wear tester. The experimental conditions are normal load 10N, slip speed 0.60 ~ 1.2m / s, slip distance 2000m. SEM observation was used to study the wear mechanism of the worn surface. By constructing a linear regression model to study the impact of experimental parameters on wear rate. Compared with the AZ31B magnesium alloy, the hardness increase due to the effect of the reinforcement body makes the composite material show a low wear rate. Plowing, furrowing, delamination and oxidation constitute a mixed wear mechanism.