期刊
NANOMATERIALS
卷 12, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/nano12050807
关键词
graphene; Cu composite; cold drawing; microstructure evolution; tensile properties; electrical conductivity
类别
资金
- Program of National Natural Science Foundation of China [52001002, 51801043]
- China Postdoctoral Science Foundation [2021M690180, 2019M650065]
- Scientific Research Starting Foundation of Anhui Polytechnic University of China [2020YQQ036]
Multi-pass cold drawing was found to continuously refine the grains and graphene in the Cu matrix composite, leading to the formation of dynamic recrystallization. The textured composite showed a mixture of fiber textures with dominant and minor orientations after severe drawing reduction.
The influence of multi-pass cold drawing on the evolution of microstructure, texture, and properties of Cu matrix composite, reinforced by in situ grown graphene, has been systematically investigated. Under continuous and severe plastic deformation, the grains in the composite were continuously refined to nanoscale. In addition, graphene in the composite could be gradually refined, exfoliated, and redispersed. Interestingly, dynamic recrystallization of the composite was formed after 80% drawing reduction and its formation mechanism was discussed. The texture of the as-drawn composite comprised a mixture of fiber textures with dominated and minor orientation after 99.7% severe drawing reduction. The tensile properties and electrical conductivity of the as-drawn composites were also investigated. This work provides a better guideline on the plastic deformation behavior of the advanced graphene/metal nanocomposite.
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