Fabrication of Nano-Particle Reinforced Metal Matrix Composites
Fabrication of Nano-Particle Reinforced Metal Matrix Composites
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DOI：
10.4028/www.scientific.net/amr.651.289
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
A. Pramanik;G. Littlefair
中科院分区：
文献类型：
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作者：
A. Pramanik;G. Littlefair
纳米颗粒增强金属基复合材料的力学性能远优于微颗粒增强金属基复合材料及相应的整体基材料。然而，纳米颗粒增强金属基复合材料的制备方法复杂且昂贵。本文对现有的粉末冶金法、液体冶金法、复合法和混合法等制备方法的机理进行了研究和讨论。这给了一个洞察与不同的工艺和方法来改进制造工艺相关的挑战。研究发现，这些材料主要采用改进的传统制备工艺。除机械合金化方法外，主要问题是在增强体体积或重量百分比较高（>.1 %）时，如何实现纳米颗粒增强体的合理均匀分布。
Nanoparticle reinforced metal matrix possess much better mechanical properties over microparticle reinforced metal matrix composites as well as corresponding monolithic matrix materials. However, the fabrication methods of nanoparticle reinforced metal matrix composites are complex and expensive. This paper investigates and discusses the mechanisms of all the fabrication process, such as powder metallurgy, liquid metallurgy, compocasting and hybrid methods, available in the literature. This gives an insight on challenges associated with different processes and ways to improve the fabrication processes. It is found that modified traditional fabrication processes are mainly applied for these materials. The main problem is to achieve reasonably uniform distribution of nanoparticle reinforcement in the methods other than mechanical alloying when the volume or weight percent of reinforcement is higher (> 1%).