Effect of aging treatment on microstructure and mechanical properties of Al-Si matrix alloy reinforced with high purity aluminum nitride (AlN)

Mahamad Noor Wahab, Mariyam Jameelah Ghazali, Abdul Razak Daud

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microstructure and mechanical properties of heat treated Al-Si alloy containing up to 10 wt% aluminum nitride (AlN) particles were investigate. In this work high purity AlN powder with different weight percentage of 0, 5, 7 and 10 were calculated as reinforced material to the metal matrix composites. The Al-Si matrix was prepared by a bottom pour stir casting technique. Heat treatment was performed by soaking and followed by an aged treatment. It was found that the AlN particles were scattered randomly distributed in the matrix composite. Ageing induced Si grain transformation into to spheroid shapes while Al dendrites tend to become finer. Ultimate tensile strength (UTS) had improved drastically from to 125MPa to 306MPa for un-aged Al-Si alloy and aged AlN 7 wt%. Fracture morphologies showed a pronounced feature with small dimples, tear ridges and micro neck particularly in the aged samples leading to a higher tensile value and increase in ductility. The presence of AlN particles in the alloys had improved the tensile strength by slowing down the plastic deformation during tensile test.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages967-971
Number of pages5
Volume462-463
DOIs
Publication statusPublished - 2011
Event8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010 - Kuala Lumpur
Duration: 7 Jun 20109 Jun 2010

Publication series

NameKey Engineering Materials
Volume462-463
ISSN (Print)10139826

Other

Other8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010
CityKuala Lumpur
Period7/6/109/6/10

Fingerprint

Aluminum nitride
Aging of materials
Mechanical properties
Microstructure
Tensile strength
Composite materials
Powders
Ductility
Plastic deformation
Casting
Metals
Heat treatment
aluminum nitride

Keywords

  • Aging treatment
  • Al-Si alloy
  • AlN particles
  • Tensile strength

ASJC Scopus subject areas

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

Cite this

Effect of aging treatment on microstructure and mechanical properties of Al-Si matrix alloy reinforced with high purity aluminum nitride (AlN). / Wahab, Mahamad Noor; Ghazali, Mariyam Jameelah; Daud, Abdul Razak.

Key Engineering Materials. Vol. 462-463 2011. p. 967-971 (Key Engineering Materials; Vol. 462-463).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wahab, MN, Ghazali, MJ & Daud, AR 2011, Effect of aging treatment on microstructure and mechanical properties of Al-Si matrix alloy reinforced with high purity aluminum nitride (AlN). in Key Engineering Materials. vol. 462-463, Key Engineering Materials, vol. 462-463, pp. 967-971, 8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010, Kuala Lumpur, 7/6/10. https://doi.org/10.4028/www.scientific.net/KEM.462-463.967
Wahab, Mahamad Noor ; Ghazali, Mariyam Jameelah ; Daud, Abdul Razak. / Effect of aging treatment on microstructure and mechanical properties of Al-Si matrix alloy reinforced with high purity aluminum nitride (AlN). Key Engineering Materials. Vol. 462-463 2011. pp. 967-971 (Key Engineering Materials).
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