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

作　　者：Tielong Han Fucheng Wang Jiajun Li Chunnian He Naiqin Zhao 

机构地区：[1]School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials,Tianjin University,Tianjin 300072,China [2]Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China [3]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,China [4]Collaborative Innovation Center of Chemical Science and Engineering,Tianjin 300072,China [5]Key Laboratory of Advanced Ceramics and Machining Technology,Ministry of Education,Tianjin University,Tianjin 300072,China

出　　处：《Journal of Materials Science & Technology》2021年第33期1-10,共10页材料科学技术（英文版）

基　　金：financially support by the Equipment Advance Research Fund (Grant No. 61409220102);the Chinese National Science Fund for Distinguished Young Scholars (Grant No. 52025015);the Chinese National Natural Science Foundation (Grant No. 51771130, 52071230);the Tianjin youth talent support program, the Tianjin Natural Science Funds for Distinguished Young Scholars (Grant No. 17JCJQJC44300);the Tianjin Science and Technology Support Project (Grant No. 17ZXCLGX00060)。

摘　　要：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 heattreatment 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.

关 键 词：Metal matrix composites Al-Cu alloy Graphene nanoplates Heat treatment 

分 类 号：TB333[一般工业技术—材料科学与工程]