Microstructural analysis and properties of Al-Cu-Mg/bagasse ash particulate composites

V. S. Aigbodion, S. B. Hassan, J. E. Oghenevweta

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The effects of bagasse ash particles on the as-cast microstructure and properties of Al-Cu-Mg alloy composites produced by double stir-casting method have been studied. 2-10 wt% bagasse ash particles were added. The microstructure and phases of the alloy particulate composites produced were examined by SEM/EDS and XRD methods. The physical and mechanical properties determined includes: density, ultimate tensile strength, yield strength, compression strength, hardness values and impact energy. The results revealed that, additions of bagasse ash reinforcement increased the hardness and compression strength values by 43.3% and 57.7%, respectively, the density and impact energy decreased by 10.27% and 45%, respectively, as the weight percent of bagasse ash increases in the composites. The yield strength and ultimate tensile strength increased by 49.76% and 34.25% up to a maximum of 8 wt% bagasse ash addition, respectively. These increases in strength and hardness values are attributed to the distribution of hard and brittle ceramic phases in the ductile metal matrix. The microstructure obtained reveals a dark ceramic and white metal phases, which resulted into increase in the dislocation density at the particles-matrix interfaces. These results show that better properties are achievable by the addition of bagasse ash to Al-Cu-Mg alloy.

Original languageEnglish
Pages (from-to)188-194
Number of pages7
JournalJournal of Alloys and Compounds
Volume497
Issue number1-2
DOIs
Publication statusPublished - 14 May 2010
Externally publishedYes

Keywords

  • Al-Cu-Mg alloy
  • Bagasse ash
  • Composites
  • Microstructure
  • Particulate and reinforcement

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Microstructural analysis and properties of Al-Cu-Mg/bagasse ash particulate composites'. Together they form a unique fingerprint.

Cite this