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<p>The major difficulty in fabricating composites wire stems from the low ductility of the composites. In this paper, novel graphene-reinforced aluminum/graphene composites wire is successfully fabricated by friction stir processing (FSP) and cold drawing at ambient temperature. The success is allowed by the excellent ductility of aluminum/graphene composites resulted from FSP. The mechanical properties and the microstructure characteristics of the aluminum/graphene composites wire were investigated. The yield strength, tensile strength, and elongation of the aluminum/graphene composites wire were measured to increase by more than 18, 15, and 20%, respectively, compared to the pure aluminum wire, indicating good strength and ductility. The grain orientations of the wires were evaluated by electron back scattering diffraction (EBSD), which showed that the equiaxed grains were elongated along the deformation direction and had a slender fibrous shape after cold drawing. The morphology of the graphene was examined and characterized by transmission electron microscopy (TEM) and Raman spectroscopy, and no interfacial reaction compounds such as Al<sub>4</sub>C<sub>3</sub> were detected.</p>

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A Novel Graphene/Reinforced Aluminum Matrix Composites Wire Fabricated by Friction Stir Processing and Cold Drawing

  • 期刊论文

  • 发表日期：

    2026年2月11日

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  • Di Wu,
  • Qingyu Shi,
  • Fangzheng Shi,
  • Shuai Zhang,
  • Bowen Xu,
  • Gaoqiang Chen

摘要

The major difficulty in fabricating composites wire stems from the low ductility of the composites. In this paper, novel graphene-reinforced aluminum/graphene composites wire is successfully fabricated by friction stir processing (FSP) and cold drawing at ambient temperature. The success is allowed by the excellent ductility of aluminum/graphene composites resulted from FSP. The mechanical properties and the microstructure characteristics of the aluminum/graphene composites wire were investigated. The yield strength, tensile strength, and elongation of the aluminum/graphene composites wire were measured to increase by more than 18, 15, and 20%, respectively, compared to the pure aluminum wire, indicating good strength and ductility. The grain orientations of the wires were evaluated by electron back scattering diffraction (EBSD), which showed that the equiaxed grains were elongated along the deformation direction and had a slender fibrous shape after cold drawing. The morphology of the graphene was examined and characterized by transmission electron microscopy (TEM) and Raman spectroscopy, and no interfacial reaction compounds such as Al4C3 were detected.