【摘 要】
：
Aluminum matrix composites(AMCs)rein-forced with graphene nanoplatelets(GNPs)were fabricated by using an accumulative roll-compositing(ARC)process.Microstructure,mechanical and electrical properties of the nanostructured AMCs were characterized.The result
【机 构】
：
School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China;School of Mechanical
论文部分内容阅读
Aluminum matrix composites(AMCs)rein-forced with graphene nanoplatelets(GNPs)were fabricated by using an accumulative roll-compositing(ARC)process.Microstructure,mechanical and electrical properties of the nanostructured AMCs were characterized.The results showed that small addition(0.2 vol％and 0.5 vol％)of GNPs can lead to a simultaneous increase in the tensile strength and ductility of the GNPs/Al nanocomposites,as compared with the same processed pure Al.With increasing GNPs content,the tensile strength of the GNPs/Al nanocomposites can be enhanced to 387 MPa with retained elongation of 15％.Meanwhile,the GNPs/Al nanocomposites exhibited a good electrical conductivity of 77.8％—86.1％that of annealed pure Al.The excellent properties(high strength,high ductility and high conduc-tivity)of the GNPs/Al are associated with the particular ARC process,which facilitates the uniform dispersion of GNPs in the matrix and formation of ultrafine-grained Al matrix.The strengthening and toughening of the GNPs/Al nanocomposites were discussed considering different mechanisms and the unique effect of GNPs.
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