The Study of Enhanced Mechanical Properties for Cu/Gr/2024Al Composite

Abstract:

2024Al alloy powder as matrix material with nanocopper-modified graphene as reinforcement was studied to explore the effects of graphene on the tissue, hardness, friction performance of the composite. The Cu/Gr/2024Al composites were prepared via three-dimensional mixed powder and vacuum hot press sintering. The results found that the nanocopper-modified graphene could be uniformly distributed in the aluminum alloy matrix, and formed a good binding interface with the matrix material. When the graphene content was 0.75 wt.% and 1.0wt%, the impact yield strength and the hardness reached the maximum of 434.8 MPa and 118.4 HV5, which were 27.24% and 43.11% higher than that of 2024Al respectively. Furthermore, with the increase of nanocopper-modified graphene content, the corrosion resistance of composite materials in 3.5%Cl^-concentration solution was improved.

• Periodical: Key Engineering Materials (Volume 905)
• Pages: 254-262
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.905.254
• Online since: January 2022
• Authors: Feng Guo Liu*, Ya Nan Zhang, Hao Chen, Si Cheng Li, Ren Guo Guan
• Keywords: Aluminum-Matrix Composites, Friction Wear, Graphene, Material Properties

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