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首页> 外文期刊>Journal of Materials Engineering and Performance >Low-Velocity Impact Wear Behavior of Ball-to-Flat Contact Under Constant Kinetic Energy
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Low-Velocity Impact Wear Behavior of Ball-to-Flat Contact Under Constant Kinetic Energy

机译：恒定动能下球形触点的低速冲击磨损行为

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The im pact tests were conducted on metallic materials with different bulk hardness and Young's moduli. Analysis of the dynamics response during the tribological process showed that the tested materials had similar energy absorption, where the peak contact force increased as the tests continued. Moreover, wear volume decreased with the increase in Young's modulus of metals, except for Cr with a relatively low hardness. Wear rate was gradually reduced to a steady stage with increasing cycles, which was attributed to the decrease in contact stress and work-hardening effect. The main wear mechanism of impact was characterized by delamination, and the specific surface degradation mechanisms were depending on the mechanical properties of materials. The absorbed energy was used to the propagation of micro-cracks in the subsurface instead of plastic deformation, when resistance of friction wear and plastic behavior was improved. Hence, both the hardness and Young's modulus played important roles in the impact wear of metallic materials.
机译：IM PACT试验是在具有不同散装硬度和杨氏模态的金属材料上进行的。在摩擦学过程中的动力学响应分析表明，测试材料具有相似的能量吸收，其中峰接触力随着试验的继续而增加。此外，除了具有相对低硬度的Cr外，磨损量随着杨氏模量的增加而降低。磨损率逐渐降低到稳定阶段，随着循环的增加，归因于接触应力和工作硬化效果的降低。影响的主要磨损机制是分层的特征，并且比表面降解机制取决于材料的机械性能。当摩擦磨损和塑性行为的电阻改善时，吸收的能量用于在地下而不是塑性变形中的微裂纹传播。因此，硬度和杨氏的模量都在金属材料的冲击磨损中发挥了重要作用。

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