Effect of Holding Time on Density and Morphological Property of Aluminium Composite Using Recycled Materials by Stir Casting Method


  • Awwal Hussain Nuhu
  • Suzi Salwah Binti Jikan
  • Saliza Binti Asman
  • Nur Azam Bin Badarulzaman
  • Dagaci Muhammad Zago






Aluminium, Composite, Density, Holding-time, Microstructure, Morphology


Aluminium metal matrix composites were fabricated from recycled materials via stir casting method. The composites differed in their holding time (ht) that is 30 minutes, 45 minutes and 60 minutes accordingly. The microstructures of the composites were analysed using optical microscope as well as scanning electron microscope in order to examine their morphological make-up. The average densities of the composites were determined and compared with one another. There is no significant difference between average densities of the fabricated composites. The observations revealed that varying the ht has greater impact the composites’ morphology, particularly on those composites which have been fabricated at 60 minutes ht.


[1] Agunsoye JO, Talabi SI, Bello S & Awe IO (2014), The Effects of Cocos Nucifera (Coconut Shell) on the Mechanical and Tribological Properties of Recycled Waste Aluminium Can Composites. Tribology in Industry 36(2), 155–162.

[2] Al-imari JHG (2014), Fabrication and Mechanical Properties of Economic Composite Materials Using Alumimium Scrap and Wasted Glass. 3rd International Conference on Mechanical, Automobile and Robotics Engineering (ICMAR’2014) Feb. 11-12, 2014 Singapore, (356), 812–824.

[3] Nuhu AH, Jikan SS, Asman S, Azam N, Zago DM, & Bano N (2017), Fabrication and Characterization of Direct Recycled Al-Cu-Cullet Metal Composite. Journal of Science and Technology 9(4), 15–18.

[4] Sharma P, Sharma S, & Khanduja DA (2015), Study on Microstructure of Aluminium Matrix Composites. Journal of Asian Ceramic Societies (157), 1–5, http://doi.org/10.1016/j.jascer.2015.04.001

[5] Anis AL, Ramli R & Darham W (2016), Microstructure and Mechanical Properties Investigation of in situ TiB2 and ZrB2 Reinforced Al- 4Cu Composites. Materials Science and Engineering 114(2016), 1–5, http://doi.org/10.1088/1757-899X/114/1/012120, (2016).

[6] Srivastava AK, Dixit AR, Tiwari S & Nagar GB (2016), Investigation of micro-structural and mechanical properties of metal matrix composite A359 / B 4 C through electromagnetic stir casting. Indian Journal of Engineering & Materials Sciences 23(June), 171–180.

[7] Onat A, Akbulut H & Yilmaz F (2007), Production and characterisation of silicon carbide particulate reinforced aluminium – copper alloy matrix composites by direct squeeze casting method. Journal of Alloys and Compounds, 436, 375–382, http://doi.org/10.1016/j.jallcom.2006.07.057

[8] Rahman MH & Al Rashed HMM (2014), Characterization of Silicon Carbide Reinforced Aluminum matrix Composites. Procedia Engineering, 90(2014), 103–109, http://doi.org/10.1016/j.proeng.2014.11.821

[9] Ahmad A, Lajis MA & Yusuf NK (2017), On the Role of Processing Parameters in Producing Recycled Aluminum AA6061 Based Metal Matrix. Materials, 10(1098), 2–15, http://doi.org/10.3390/ma10091098

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