Flexural strength and fracture studies of Al-Si/SiCP composites

Yusof Abdullah, Abdul Razak Daud, Roslinda Shamsudin, Mohd B. Harun

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Ambient temperature mechanical properties of Al-7Si/SiCp composite prepared by stir casting process were studied. Microstructure, flexural, hardness and tensile tests of A1-7Si alloy reinforced with 10 and 20 wt.% SiCp were investigated. Samples were characterized by scanning electron microscopy (SEM) while three point bend tests were performed to study the flexural strength of the composites. Hardness and bending tests indicated that reinforcing the Al-Si matrix with SiCp improved the hardness and flexural strength. SiCp improved the flexural strength mainly by acting as barriers to cracks whereby cracks normally initiated at the debonded particle/matrix interface. The porosity content increased with the increasing number SiCp present in the matrix. However, it was believed that the high flexural strength and hardness were due to the good bonding properties of the matrix/particle interface. Fine SiCp was play a role to increase the surface area and promotes better strength of the composites.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalInternational Journal of Mechanical and Materials Engineering
Volume4
Issue number2
Publication statusPublished - 2009

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Bending strength
Hardness
Composite materials
Cracks
Bending tests
Casting
Porosity
Mechanical properties
Microstructure
Scanning electron microscopy
Temperature

Keywords

  • Al-Si/SiC composite
  • Bonding
  • Flexural strength
  • Fracture

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Flexural strength and fracture studies of Al-Si/SiCP composites. / Abdullah, Yusof; Daud, Abdul Razak; Shamsudin, Roslinda; Harun, Mohd B.

In: International Journal of Mechanical and Materials Engineering, Vol. 4, No. 2, 2009, p. 109-114.

Research output: Contribution to journalArticle

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