Achieving High Strength in Cu/Graphene Composite Produced by High Pressure Torsion

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING Russian Metallurgy (Metally) Pub Date : 2024-03-20 DOI:10.1134/S0036029523110186
G. Korznikova, A. Aletdinov, G. Khalikova, E. Korznikova
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Abstract

Cu/graphene metal matrix composite is promising for a wide range of applications. However, the important problems in the synthesis of the Cu/graphene composite exist, associated with the poor dispersion of the graphene in the matrix and weak interfacial bonding. High pressure torsion processing supplies a possibility to obtain bulk samples with a nanocrystalline structure, without pores and contamination from dissimilar materials. This processing was successfully used for fabrication of the Cu/graphene composite out of thin copper foils coated with a monolayer of graphene. Microstructural characterization of the processed disks demonstrated microstructure with an equiaxed grain size of about 300 nm. The process significantly increased microhardness of Cu/graphene composite. The tensile tests showed the value of the tensile strength reached 670 MPa at room temperature.

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通过高压扭转实现铜/石墨烯复合材料的高强度
铜/石墨烯金属基复合材料具有广泛的应用前景。然而,铜/石墨烯复合材料在合成过程中存在一些重要问题,如石墨烯在基体中的分散性较差以及界面结合力较弱。高压扭转加工为获得具有纳米晶体结构、无孔隙和无异种材料污染的块状样品提供了可能。我们成功地利用这种加工方法,在涂有单层石墨烯的薄铜箔上制造出了铜/石墨烯复合材料。加工后磁盘的微观结构特征表明,其微观结构具有约 300 纳米的等轴晶粒尺寸。该工艺大大提高了铜/石墨烯复合材料的显微硬度。拉伸测试表明,室温下的拉伸强度达到了 670 兆帕。
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来源期刊
Russian Metallurgy (Metally)
Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
0.70
自引率
25.00%
发文量
140
期刊介绍: Russian Metallurgy (Metally)  publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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