|
|
Microstructure and properties of graphene/2024Al composites prepared by powder metallurgy |
PENG Yujie1,LIU Pei1,2,LIU Kunding1,WANG Jie1,WU Shuaikui1,ZHOU Zheng1 |
1.College of Materials Science and Engineering,Henan University of Science and Technology,Luoyang
471023,China; 2. Provincial and Ministerial Co-construction of Collaborative Innovation Center for Nonferrous
Metal New Materials and Advanced Processing Technology,Luoyang 471023,China |
|
|
Abstract In this paper, graphene nanosheets and 2024Al alloy powder were used to prepare graphene /2024Al matrix
composites with different contents by the method of cold isostatic pressing + vacuum sintering + hot extrusion.
The microstructure and mechanical properties of graphene/2024Al with different contents were investigated by
SEM characterization, EDS analysis and property tests. The results show that the graphene in the composite presents
a random distribution after cold isostatic pressing and vacuum sintering, and the density of composite is relatively
low in this case. But when the graphene/2024Al composite is hot-extruded, the graphene in the composite
presents an aligned arrangement, and the density of composite is obviously enhanced. Then tensile strength of
0.5% and 1% hot-extruded graphene/2024Al composite reaches 290.6 MPa and 321.1 MPa, which is improved by
48.8% and 64.4% compared with the 2024Al matrix, respectively. These results show that the addition of graphene
and the increase of graphene content can effectively enhance the tensile strength of graphene/Al composite.
|
Received: 09 April 2021
|
Corresponding Authors:
柳培(1991—),男,博士,博士后,讲师,主要研究方向为高性能新型金属基复合材料。
E-mail: liupei@haust.edu.cn
|
|
|
|
|
|
|