Aluminum metal-matrix composites for automotive applications: tribological considerations
Aluminum metal-matrix composites for automotive applications: tribological considerations
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DOI：
10.1023/b:tril.0000044492.91991.f3
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发表时间：
2004-10-01
影响因子：
3.2
通讯作者：
Asthana, R
中科院分区：
文献类型：
--
作者：
Prasad, SV;Asthana, R
铝合金具有许多机械和物理性能，使其在汽车应用中具有吸引力，但它们表现出极差的抗咬合性和抗磨损性。用固体润滑剂、硬质陶瓷颗粒、短纤维和晶须增强铝合金，可形成具有机械、物理和摩擦学特性精确平衡的先进金属基复合材料（MMC）。先进的制造技术，如熔融合金挤压渗透到纤维预制件中，可用于生产近净形部件。铝基复合材料在汽车工业中的成功应用包括制动盘、活塞、连杆和整体铸造发动机缸体等。本文综述了硬质颗粒、短纤维和固体润滑剂增强铝基复合材料的摩擦学性能，以及用这些新型材料制备汽车零部件的技术。
Aluminum alloys possess a number of mechanical and physical properties that make them attractive for automotive applications, but they exhibit extremely poor resistance to seizure and galling. Reinforcement of aluminum alloys with solid lubricants, hard ceramic particles, short fibers and whiskers results in advanced metal - matrix composites (MMC) with precise balances of mechanical, physical and tribological characteristics. Advanced manufacturing technologies such as squeeze infiltration of molten alloys into fiber performs can be employed to produce near net-shape components. Brake rotors, pistons, connecting rods and integrally cast MMC engine blocks are some of the successful applications of Al MMCs in automotive industry. This paper gives an overview of the tribological behavior of Al MMCs reinforced with hard particles, short fibers, and solid lubricants, and the technologies for producing automotive parts from these novel materials.