Fullerene/A5083 composites fabricated by material flow during friction stir processing
Fullerene/A5083 composites fabricated by material flow during friction stir processing
复制标题
DOI：
10.1016/j.compositesa.2007.07.004
复制
发表时间：
2007-10
影响因子：
8.7
通讯作者：
Y. Morisada;H. Fujii;T. Nagaoka;K. Nogi;M. Fukusumi
中科院分区：
文献类型：
--
作者：
Y. Morisada;H. Fujii;T. Nagaoka;K. Nogi;M. Fukusumi
采用搅拌摩擦法（FSP）成功地将富勒烯分散到A5083中。在FSP过程中，富勒烯的分散促进了晶粒的再结晶细化，晶粒尺寸达到约200 nm。硬度也显着增加的晶粒细化和富勒烯分子的分散。在这项研究中，在FSP材料流进行了研究，相对于富勒烯的分散。结果表明，“洋葱圈”的形成机理与旋转刀具台肩引起的对流密切相关。当通过FSP制造表面复合材料以提供增强物的均匀分散时，通过肩部的这种材料流动是非常重要的。
Fullerene was successfully dispersed into A5083 by friction stir processing (FSP). Dispersion of the fullerene enhanced the grain refinement by recrystallization during the FSP and the grain size reached ∼200nm. The hardness was also remarkably increased by both the grain refinement and the dispersion of the fullerene molecules. In this study, material flow during the FSP was investigated with respect to the dispersion of the fullerene. It was revealed that the formation mechanism of the “onion ring” was closely related to the convectional flow induced by the shoulder of the rotating tool. This material flow by the shoulder is very important when fabricating the surface composites by the FSP in order to provide a uniform dispersion of the reinforcement.