Fracture toughness of a 6061Al matrix composite reinforced with fine SiC particles

Lihe Qian, Toshiro Kobayashi, Hiroyuki Toda, Takashi Goda, Zhong Guang Wang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The fracture toughness of 6061Al alloy metal matrix composite reinforced with 15 vol% fine SiC particles of 600 nm in size under a high temperature over-aged condition was studied. And the toughness of the 6061Al matrix alloy and the same matrix alloy reinforced with coarse SiC particles of 9.5 μm were also measured for comparison. Fracture toughness tests were conducted on a servo-hydraulic testing machine by using three point bending specimens. The results showed that the toughness of the fine particle reinforced composite was obviously higher than that of the coarse particle reinforced composite in terms of crack initiation toughness, crack propagation energy and total absorbed energy. The mechanisms controlling the fracture toughness of the two composites reinforced with fine and coarse SiC particles were discussed based upon the measured toughness data and microstructure examinations by means of an optical microscope and a scanning electron microscope.

Original languageEnglish
Pages (from-to)2838-2842
Number of pages5
JournalMaterials Transactions
Volume43
Issue number11
DOIs
Publication statusPublished - Nov 2002
Externally publishedYes

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fracture strength
Toughness
Fracture toughness
toughness
Particle reinforced composites
composite materials
Composite materials
matrices
Crack initiation
metal matrix composites
crack initiation
crack propagation
Crack propagation
optical microscopes
Microscopes
test equipment
Electron microscopes
hydraulics
Metals
Hydraulics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Fracture toughness of a 6061Al matrix composite reinforced with fine SiC particles. / Qian, Lihe; Kobayashi, Toshiro; Toda, Hiroyuki; Goda, Takashi; Wang, Zhong Guang.

In: Materials Transactions, Vol. 43, No. 11, 11.2002, p. 2838-2842.

Research output: Contribution to journalArticle

Qian, Lihe ; Kobayashi, Toshiro ; Toda, Hiroyuki ; Goda, Takashi ; Wang, Zhong Guang. / Fracture toughness of a 6061Al matrix composite reinforced with fine SiC particles. In: Materials Transactions. 2002 ; Vol. 43, No. 11. pp. 2838-2842.
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