Effect of GNPs on microstructures and mechanical properties of GNPs/Al-Cu composites with different heat treatment status

Tielong Han ¹Fucheng Wang ²Jiajun Li ²Chunnian He ³Naiqin Zhao⁴

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作者信息

1. School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials,Tianjin University,Tianjin 300072,China;Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China
2. School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials,Tianjin University,Tianjin 300072,China
3. School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials,Tianjin University,Tianjin 300072,China;Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City,Fuzhou 350207,China;Collaborative Innovation Center of Chemical Science and Engineering,Tianjin 300072,China;Key Laboratory of Advanced Ceramics and Machining Technology,Ministry of Education,Tianjin University,Tianjin 300072,China
4. School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials,Tianjin University,Tianjin 300072,China;Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City,Fuzhou 350207,China
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Abstract

Microstructural and mechanical behavior of heat treatable Al-4.6Cu binary alloy reinforced with graphene nanoplates(GNPs)in different heat treatment status were investigated in this paper.The addition of GNPs significantly enhanced the yield strength and tensile strength of Al-Cu alloy regardless of the heat-treatment conditions.It was also found that GNPs accelerated the formation of precipitates,leading to a greatly shortened aging time for GNPs/Al-4.6Cu composite to reach the peak hardness.However,aging treatment enhanced the strength of GNPs/Al-Cu composite very little,which could be explained by the interaction between GNPs,precipitates and dislocations.This work inspires us that the heat treatment process of aluminum alloy matrix composites should be designed independently with the matrix in quest of an optimum performance.

Key words

Metal matrix composites/Al-Cu alloy/Graphene nanoplates/Heat treatment

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基金项目

Equipment Advance Research Fund(61409220102)

Chinese National Science Fund for Distinguished Young Scholars(52025015)

Chinese National Natural Science Foundation(51771130)

Chinese National Natural Science Foundation(52071230)

Tianjin youth talent support program()

Tianjin Natural Science Funds for Distinguished Young Scholars(17JCJQJC44300)

Tianjin Science and Technology Support Project(17ZXCLGX00060)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量47

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