苏州工学院学报2026，Vol.40Issue(2)：16-22,7.
石墨烯增强铜基复合材料的微尺度力学性能研究
A Study on Micromechanical Properties of Graphene Reinforced Copper Composites
摘要
Abstract
Graphene-reinforced copper matrix composites were fabricated by spark plasma sintering(SPS).The microstructure and mechanical properties(e.g.,hardness,elastic modulus,and yield strength)of the composites were investigated by using X-ray diffraction(XRD),Raman spectroscopy,scanning electron microscopy(SEM),and instrumented micro-indentation technique.The results show that graphene retains its pristine structure and is uniformly distributed in the composites,leading to significant grain refinement.With the addition of 1.5wt.%graphene,the elastic modulus and yield strength of the composites increase by about 36%and 41%,respectively.Further analysis reveals that the grain size does not further refine with increasing graphene content,and the inter-particle spacing of graphene remains at the micron level.Therefore,grain refinement and Orowan strengthening are not significant in this study.The increased dislocation density caused by thermal mismatch residual stress due to the large difference in thermal expansion coefficients between graphene and copper may be the dominant strengthening mechanism for the copper matrix composites.关键词
石墨烯/铜基复合材料/力学性能/仪器化压入/增强机制Key words
graphene/copper matrix composites/mechanical properties/instrumented indentation/strengthening mechanisms分类
矿业与冶金引用本文复制引用
宋英,徐勇,胡定烁,蒋靖,王伟..石墨烯增强铜基复合材料的微尺度力学性能研究[J].苏州工学院学报,2026,40(2):16-22,7.基金项目
江苏省高等学校自然科学研究面上项目"激光粉末床熔融Ni-MXene增强铜基复合材料成形机理及性能研究"(KYZ2022033Z) （KYZ2022033Z）
中国博士后科学基金面上项目(2023M732566) （2023M732566）
