EFFECTS OF BORON CARBIDE ADDITION ON HARDNESS AND MICROSTRUCTURE OF Al-Si/B4C COMPOSITE

Authors

  • Anis Syukriah Ibrahim Department of Applied Physics, Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia Author
  • Abdul Razak Daud Department of Applied Physics, Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia Author
  • Yusof Abdullah Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor, Malaysia Author

Keywords:

Aluminum-Silicon Alloy, Boron Carbide, Stir Casting

Abstract

The aim of this research was to study the microstructure and microhardness of the Al Si/B4C composites containing 2-8 wt% of B4C. The composites were prepared by stir casting technique. Homogenization treatment was carried out at temperatures of 540oC for 4 hr and followed by ageing at 180oC and 220oC for 2 hr. Vickers microhardness test was performed to the composites. Microstructural study was carried out by optical microscopy. The results showed that the increase in boron carbide content seemed to increase the hardness of the composites. Heat-treatment had increased the hardness further due to spheroidization of Si. The presence of B4C did not affect the microstructure of Al-Si alloy matrix significantly.

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Published

10-05-2026

Issue

Vol. 21 No. (1&2) (2013): Solid State Science and Technology

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.