Characterization and Empirical Modelling of Sliding Wear on Sintered Aluminium-Graphite Composites

IF 1.5 Q3 ENGINEERING, MECHANICAL
Amrishraj Doraisamy, S. Thiagarajan
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引用次数: 5

Abstract

Aluminium-graphite composites were synthesized using powder metallurgy route. Graphite was added as reinforcement in the range of 0, 3, and 6 weight % and composites were prepared by P/M. Microstructural analysis of the newly synthesized composites was carried out using SEM. The hardness of the composites was studied using Vickers microhardness tester, by applying a load of 1 kg for 5 sec. Also the amount of porosity was determined. Further the wear test was conducted on the sintered specimens using pin-on-disc wear apparatus according to ASTM-G99 standards. A regression model was developed to predict the wear rate of the specimen. Then the worn images were studied using SEM based on response surface methodology in order to understand the various wear mechanisms involved. The study revealed that mild wear, oxidational wear, plowing, cutting, and plastic deformation are the main mechanisms responsible for causing the wear.
烧结铝-石墨复合材料滑动磨损表征及经验模型
采用粉末冶金方法合成了铝-石墨复合材料。添加0、3、6质量%的石墨作为增强剂,采用P/M法制备复合材料。利用扫描电镜对合成的复合材料进行了显微组织分析。采用维氏显微硬度计对复合材料的硬度进行了研究,施加1 kg的载荷,持续5秒。同时测定了孔隙率。根据ASTM-G99标准,采用销盘磨损仪对烧结试样进行了磨损试验。建立了回归模型来预测试样的磨损率。在此基础上,利用响应面法对磨损图像进行扫描电镜分析,了解不同磨损机理。研究表明,轻度磨损、氧化磨损、犁耕、切削和塑性变形是造成磨损的主要机制。
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来源期刊
Advances in Tribology
Advances in Tribology ENGINEERING, MECHANICAL-
CiteScore
5.00
自引率
0.00%
发文量
1
审稿时长
13 weeks
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