Tribological performance and wear mechanisms of a high-temperature wear-resistant Al-Si/SiAlON composite
Tribological performance and wear mechanisms of a high-temperature wear-resistant Al-Si/SiAlON composite
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DOI：
10.1016/j.triboint.2021.107227
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发表时间：
2021-12
影响因子：
6.2
通讯作者：
Hui Tan;Qichun Sun;Wenyuan Chen;Shengyu Zhu;Jun Cheng;Jun Yang
中科院分区：
文献类型：
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作者：
Hui Tan;Qichun Sun;Wenyuan Chen;Shengyu Zhu;Jun Cheng;Jun Yang
高温耐磨铝合金基复合材料是航空航天、汽车等工业发展的重要组成部分。为此，研制了具有优异耐磨性和耐温性的SiAlON颗粒增强Al-20 Si-5 Fe-2Ni合金基复合材料。研究了复合材料的物相、显微组织和力学性能。在RT-600 °C范围内，研究了试验温度对硬度和摩擦学性能的影响。结果表明，与基体相比，复合材料的耐磨性得到了显著提高。这主要是由于SiAlON陶瓷的承载作用和弥散强化作用以及摩擦表面形成摩擦膜，提高了高温硬度。
High-temperature wear-resistant aluminum alloy matrix composites are of prime importance for the advancement of industries such as aerospace and automobile. For this objective, the SiAlON particle reinforced Al-20Si-5Fe-2Ni alloy matrix composite with outstanding wear resistance and withstanding temperature was developed. The phase, microstructure, and mechanical properties of the composite were investigated. And effects of test temperature on the hardness and tribological behavior at RT–600 °C were examined. The results indicate that the wear resistance of the composite is significantly improved as compared with the matrix. This is primarily attributed to the improved high-temperature hardness, which results from the load-bearing effect and dispersion-strengthening effect with the addition of SiAlON ceramic, and the formation of tribolayer on the worn surface.