Machinability studies on Al7075-based hybrid composites reinforced with SiC, graphene and CNT

Q3 Engineering

International Journal of Machining and Machinability of Materials Pub Date : 2021-01-12 DOI:10.1504/IJMMM.2021.10034800

J. Ajithkumar, M. A. Xavior

引用次数: 1

Abstract

This experimental study analyses the machinability of two composites namely: 1) Al7075-10%SiC-0.1% grapheme; 2) Al7075-10%SiC-0.1% CNT by turning process using uncoated and diamond-like carbon (DLC) coated carbide inserts. Composites were fabricated through united stir and squeeze casting process with ultra-sonification. The effect of graphene and CNT on cutting force, surface roughness, flank wear, crater wear and chip morphology were quantified and presented. Graphene-based composite, recorded the highest cutting force (383.4 N) followed by CNT-based (318.6 N). Higher surface roughness (0.8519 μm) was observed in CNT-based composite and least in (0.4428 μm) graphene-based. CNT-based composite recorded the highest flank wear (0.3544 mm) and graphene-based observed the least flank wear (0.2253 mm). It was also noted that the presence of graphene showed more influence in the chip morphology. Further, the effect of graphene and CNT reinforcements on the micro-structural properties were also investigated.

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碳化硅、石墨烯和碳纳米管增强al7075基混杂复合材料的切削性能研究

本实验分析了两种复合材料的可加工性，即：1）Al7075-10%SiC-0.1%石墨烯；2） Al7075-10%SiC-0.1%CNT，通过使用未涂覆和类金刚石碳（DLC）涂覆的碳化物插件的车削工艺。采用超声联合搅拌和挤压铸造工艺制备了复合材料。定量分析了石墨烯和碳纳米管对切削力、表面粗糙度、侧面磨损、凹坑磨损和芯片形态的影响。石墨烯基复合材料的切削力最高（383.4N），其次是碳纳米管基复合材料（318.6N）。在CNT基复合材料中观察到更高的表面粗糙度（0.8519μm），而在石墨烯基复合物中观察到最低的（0.4428μm）。基于CNT的复合材料记录了最高的侧面磨损（0.3544mm），基于石墨烯的观察到的侧面磨损最小（0.2253mm）。还注意到石墨烯的存在对芯片形态显示出更大的影响。此外，还研究了石墨烯和碳纳米管增强体对微观结构性能的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Machining and Machinability of Materials Engineering-Industrial and Manufacturing Engineering

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IJMMM is a refereed international publication in the field of machining and machinability of materials. Machining science and technology is an important subject with application in several industries. Parts manufactured by other processes often require further operations before the product is ready for application. Machining is the broad term used to describe removal of material from a workpiece, and covers chip formation operations - turning, milling, drilling and grinding, for example. Machining processes can be applied to work metallic and non metallic materials such as polymers, wood, ceramics, composites and special materials. Today, in modern manufacturing engineering, there has been strong renewed interest in high efficiency machining.