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

17 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

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Fracture toughness of a 6061Al matrix composite reinforced with fine SiC particles'. Together they form a unique fingerprint.

  • Cite this