石墨烯对3003铝合金组织与性能的影响

Effects of Graphene on Microstructure and Properties of 3003 Aluminum Alloy

摘要: 本文通过拉曼光谱分析、电子背散射衍射(EBSD)和室温拉伸等方法，研究了添加石墨烯对3003铝合金组织与性能的影响。结果表明，石墨烯在合金中会生成“骨架状”的含C相，这种粗大的含C相具有较强的韧性，在轧制过程不会完全破碎，使其周围的变形非常不均匀，从而大幅提高了该合金在后续退火过程中的再结晶程度，并细化了再结晶晶粒。因此，添加石墨烯可同时大幅提高3003合金的力学性能和导电性能，相同的工艺条件下，抗拉强度从95.7 MPa提高至116.3 MPa，提高了21.5%；电导率从33.2% IACS提高至34.7% IACS，提高了4.5%。

Abstract: The effect of graphene on microstructure and mechanical properties of 3003 aluminum alloy were studied by Raman Spectrum Analysis, Electron Back-Scattered Diffraction (EBSD) and room tem-perature tensile etc. Results show that, by adding graphene the skeleton like phases containing C will precipitate in the material, which is tough and hard to be broken in rolling. The phases make the deformation uneven, thus, the crystallization is improved in the following annealing process and the crystallized grains are also refined. Hence, graphene addition improves both mechanical and electrical properties. In the same processing condition, the ultimate tensile strength is improved from 95.7 MPa to 116.3 MPa, 21.5% higher than the metals without adding graphene; the conductivity is improved from 33.2% IACS to 34.7% IACS, also 4.5% higher.