Tribological Behavior of Carbon Nanotube-Reinforced AZ91D Composites Processed by Cyclic Extrusion and Compression

被引：9
|
作者：
Zhang, Li [1 ,2 ]
Wang, Qudong [1 ,2 ]
Liu, Guoping [1 ,2 ]
Guo, Wei [1 ,2 ]
Ye, Bing [1 ,2 ]
Li, Wenzhen [3 ]
Jiang, Haiyan [1 ,2 ]
Ding, Wenjiang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 10084, Peoples R China
来源：
TRIBOLOGY LETTERS | 2018年 / 66卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Magnesium composites; Carbon nanotubes; Cyclic extrusion compression; Wear mechanism; MAGNESIUM MATRIX COMPOSITES; WEAR BEHAVIOR; MECHANICAL-PROPERTIES; FRICTION; ALLOY; ALUMINUM; MICROSTRUCTURE; PERFORMANCE; RESISTANCE; GRAPHENE;
D O I：
10.1007/s11249-018-1018-x
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Reciprocating wear tests were conducted to assess the wear resistance of CNT-reinforced AZ91D composites prepared by cyclic extrusion and compression (CEC). Effects of CEC, CNTs, and wear parameters on the tribological behavior of the composites were discussed. Results show that the matrix grain of the 0.5 wt% CNTs/AZ91D composites is largely refined from similar to 112 A mu m to 126.6 nm after eight passes of CEC. Accordingly, the hardness of the composites is increased by more than 82.0%. The wear rate of the CNTs/AZ91D composites decreases with the implement of CEC and the addition of CNTs. The lubrication effect of CNTs diminishes after CEC. Besides the reinforcing effect, the incorporated CNTs help to liberate the friction heat of the CNTs/AZ91D composites and reduce the welding of the wear debris due to their extraordinary thermal conductivity.
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页数：11
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