Fabrication of carbon nanotubes reinforced AZ91D composites by ultrasonic processing

被引：1
|
作者：
刘世英 [1 ,2 ]
高飞鹏 [1 ,2 ]
张琼元 [1 ,2 ]
朱雪 [1 ,2 ]
李文珍 [1 ,2 ]
机构：
[1] Department of Mechanical Engineering,Tsinghua University
[2] Key Laboratory for Advanced Materials Processing Technology of Ministry of Education,Tsinghua University
来源：
Transactions of Nonferrous Metals Society of China | 2010年 / 20卷 / 07期
关键词：
carbon nanotube; magnesium alloy; composite; ultrasonic processing;
D O I：
暂无
中图分类号：
TG663 [超声波加工机床及其加工];
学科分类号：
080201 ;
摘要：
Magnesium matrix nanocomposite reinforced with carbon nanotubes(CNTs/AZ91D) was fabricated by mechanical stirring and high intensity ultrasonic dispersion processing.The microstructures and mechanical properties of the nanocomposite were investigated.The results show that CNTs are well dispersed in the matrix and combined with the matrix very well.As compared with AZ91D magnesium alloy matrix,the tensile strength,yield strength and elongation of the 1.5%CNTs/AZ91D nanocomposite are improved by 22%,21%and 42%respectively in permanent mold casting.The strength and ductility of the nanocomposite are improved simultaneously.The tensile fracture analysis shows that the damage mechanism of nanocomposite is still brittle fracture.But the CNTs can prevent the local crack propagation to some extent.
引用
收藏
页码：1222 / 1227
页数：6
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