Study of mechanical and wear behaviour of AA5083 graphene reinforced composites

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Kovove Materialy-Metallic Materials Pub Date : 2022-06-02 DOI:10.31577/km.2022.2.121

S. S. Kumar, S. Kumar, U. Magarajan, S. Divya

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引用次数: 1

Abstract

AA5083 aluminium alloy is an excellent casting material with inadequate strength and poor wear properties. To increase its deﬁcient mechanical and wear properties, researchers have conducted a lot of research in the past decades. Based on the research, graphene can be considered a good reinforcement due to its outstanding mechanical properties. The present paper discusses the properties of AA5083 Metal Matrix Composites (MMCs) reinforced with graphene particles. Aluminium MMCs were fabricated using the stir casting method by varying graphene reinforcement (5 and 10 wt.%) with AA5083 (specimens B and C). The Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray Spectroscopy (EDAX) analysis results conﬁrmed the presence of graphene in the AA5083 matrix. The test results show that the tensile strength, ﬂexural strength, impact strength, and hardness were enhanced with the addition of graphene particles in the AA5083 matrix. The tribological behaviour of the MMCs was compared with the AA5083 matrix using a pin-on-disc wear test. The increase in wt.% of graphene reinforcement enhanced the wear resistance of the proposed MMCs. The large wear debris and crater were not noticed in the worn surfaces of the MMCs specimens.

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AA5083石墨烯增强复合材料力学磨损性能研究

AA5083铝合金是一种优良的铸造材料，但强度不足，耐磨性能差。为了提高其不足的机械性能和磨损性能，研究人员在过去的几十年里进行了大量的研究。基于这项研究，石墨烯由于其优异的力学性能可以被认为是一种很好的增强材料。研究了石墨烯增强AA5083金属基复合材料的性能。采用搅拌浇铸法制备了不同石墨烯增强率(5 wt.%和10 wt.%)与AA5083(试样B和C)的铝mmc。扫描电子显微镜(SEM)和能量色散x射线光谱(EDAX)分析结果证实了AA5083基体中存在石墨烯。实验结果表明，在AA5083基体中加入石墨烯颗粒后，材料的拉伸强度、弯曲强度、冲击强度和硬度均得到了提高。通过销盘磨损测试，将mmc与AA5083基体的摩擦学性能进行了比较。石墨烯增强剂wt %的增加增强了mmc的耐磨性。在MMCs试样的磨损表面未观察到较大的磨损碎片和凹坑。

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来源期刊

Kovove Materialy-Metallic Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

3 months

期刊介绍： Kovove Materialy - Metallic Materials is dedicated to publishing original theoretical and experimental papers concerned with structural, nanostructured, and functional metallic and selected non-metallic materials. Emphasis is placed on those aspects of the science of materials that address: the relationship between the microstructure of materials and their properties, including mechanical, electrical, magnetic and chemical properties; the relationship between the microstructure of materials and the thermodynamics, kinetics and mechanisms of processes; the synthesis and processing of materials, with emphasis on microstructural mechanisms and control; advances in the characterization of the microstructure and properties of materials with experiments and models which help in understanding the properties of materials.