Impact of carbon nanotubes (CNTs) inclusion on the microstructural, mechanical, and wear characteristics of Aluminium 6009 alloy | ||
| Egyptian Journal of Solids | ||
| Volume 47, Issue 1, 2025, Pages 17-40 PDF (2.69 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejs.2025.365832.1060 | ||
| Authors | ||
| H.N. Soliman* 1; M. Amin2 | ||
| 1Physics, Faculty of Education, Ain shams university | ||
| 2Department of Mechanical Engineering, Higher Technological Institute 10th of Ramadan city (HTI),10 th of Ramadan city, Egypt). | ||
| Abstract | ||
| The present investigation examined the microstructural, mechanical, and wear characteristics of Aluminium 6009 (Al6009) alloy with varying percentages (0.5- 1.5 wt.%) of carbon nanotubes (CNTs). The produced composite materials are examined for tensile strength, hardness, and wear resistance. Furthermore, the microstructural features of various composites were studied through optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectrometry (EDS), and electron probe microanalysis (EPMA). The incorporation of 1.5 wt.% CNT into Al6009 alloy enhanced the Young's modulus, yield strength, hardness, and ultimate strength by approximately 285%, 74%, 64%, and 56%, respectively. In contrast, the inclusion of 1.5 wt.% CNT decreased the ductility of Al6009 alloy by approximately 24%. Experimental data from wear testing revealed that an increase in CNT content reduced wear rate at lower loads (10 N) compared to Al6009 alloy, but increased it at higher loads (20 N, 30 N). The highest wear rate of the investigated alloy was reached by combining maximal CNT content with greater applied load. The wear morphologies were analyzed via SEM, revealing that the wear mechanism in base alloy and composites is abrasive. The microstructural study of the worn-out surfaces demonstrated less abrasive wear attributable to the incorporation of CNTs in the Al6009 matrix. | ||
| Keywords | ||
| Al6009 alloy; microhardness; sliding wear; carbon nanotubes; metal matrix composite | ||
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