Fabrication of AZ61/SIC composites by powder metallurgy process

Z. Zulkoffli, J. Syarif, Zainuddin Sajuri

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Mg-based metal matrix composites (MMCs) with addition of SiC reinforcement was fabricated by using a pre-alloyed AZ61 powder compressed without binder agent under compaction pressure of 200MPa for 20 minutes at different temperature intervals of 200°C, 250°C, 300°C and 350°C. Some of the compressed samples were then undergone a sintering process at temperature 500°C in argon-protected atmosphere for 6 hours. Microstructural observation resulted the diffusion of element from SiC particle into AZ61 matrix at 350°C compaction. The diffusion caused the lamellar precipitates occur on the sample. The sintered sample resulted on the extended diffusion element from SiC particle into the matrix for AZ61/SiC 350°C sintered sample. The as-hot compacted samples show the compaction at 350°C allowed diffusion element from SiC into the AZ61 matrix. The sintering process allow recovery of defects and releasing of internal stresses of compacted samples, and lead to the softening of the material, but for sample AZ61/SiC 350°C sintered sample show increasing of hardness value owing to element diffusions and the growing of lamellar precipitates on the sample during sintering.

Original languageEnglish
Pages (from-to)156-159
Number of pages4
JournalInternational Journal of Mechanical and Materials Engineering
Volume4
Issue number2
Publication statusPublished - 2009

Fingerprint

Powder metallurgy
Fabrication
Composite materials
Compaction
Sintering
Precipitates
Argon
Powders
Binders
Residual stresses
Reinforcement
Metals
Hardness
Recovery
Temperature
Defects

Keywords

  • Az61 magnesium alloy
  • Grain growth
  • Hot compaction
  • Metal matrix composite
  • Pm process
  • Silicon carbide particles
  • Sintering

ASJC Scopus subject areas

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

Cite this

Fabrication of AZ61/SIC composites by powder metallurgy process. / Zulkoffli, Z.; Syarif, J.; Sajuri, Zainuddin.

In: International Journal of Mechanical and Materials Engineering, Vol. 4, No. 2, 2009, p. 156-159.

Research output: Contribution to journalArticle

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