Microstructure and strengthening effect of coated diamond particles on the porous aluminum composites

Parveez, Bisma and Jamal, Nur Ayuni and Aabid, Md. Abdul and Baig, Alya Naili (2023) Microstructure and strengthening effect of coated diamond particles on the porous aluminum composites. Materials, 16 (8). pp. 1-12. ISSN 1996-1944

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Abstract

In this work, porous Al alloy-based composites with varying Ti-coated diamond contents (0, 4, 6, 12 and 15 wt.%) were prepared, employing the powder metallurgy route and using a fixed amount (25 wt.%) of polymethylmethacrylate (PMMA) as a space holder. The effects of the varying wt.% of diamond particles on the microstructure, porosities, densities and compressive behaviors were systematically evaluated. The microstructure study revealed that the porous composites exhibited a well-defined and uniform porous structure with good interfacial bonding between the Al alloy matrix and diamond particles. The porosities ranged from 18% to 35%, with an increase in the diamond content. The maximum value of plateau stress of 31.51 MPa and an energy absorption capacity of 7.46 MJ/m3 were acquired for a composite with 12 wt.% of Ti-coated diamond content; beyond this wt.%, the properties declined. Thus, the presence of diamond particles, especially in the cell walls of porous composites, strengthened their cell walls and improved their compressive properties.

Item Type:	Article (Journal)
Uncontrolled Keywords:	porous Al composite; diamond particles; space holder technique; PMMA; compressive behavior
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Nur Ayuni Jamal
Date Deposited:	05 Mar 2024 12:19
Last Modified:	16 Mar 2024 08:51
URI:	http://irep.iium.edu.my/id/eprint/111072

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