Temperature effect on fracture behaviour of an alumina particulate-reinforced 6061-aluminium composite

Mohammad Jafar Hadianfard, Joseph Healy, Yiu Wing Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

The effect of temperature on the fracture behaviour of a peak-aged alumina particulate 6061 aluminium composite was studied in the range of 25 to 180° C. The fracture toughness was found to be independent of test temperature. The role of the reinforcement phase was examined in detail at 180° C, and compared to observations at room temperature, by using an interrupted test methodology. Ductile fracture occurred at all temperatures. At room temperature the fractured particles acted as void nucleation sites and at 180° C both debonded and fractured particles were responsible for void nucleation. Large particles were found to be susceptible to fracture and nucleate microvoids earlier than small particles. A decrease in the range and size of the reinforcement phase would increase the fracture resistance for this MMC material.

Original languageEnglish
Pages (from-to)93-113
Number of pages21
JournalApplied Composite Materials
Volume1
Issue number2
DOIs
Publication statusPublished - Mar 1994
Externally publishedYes

Keywords

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  • Elevated temperature
  • Fracture mechanism
  • Fracture toughness
  • Metal matrix composites

ASJC Scopus subject areas

  • Ceramics and Composites

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