High temperature deformation behavior of Al 2124-SiCpcomposite

B. Q. Han, Kang Cheung Chan, Tai Man Yue, W. S. Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

The high temperature deformation of 2124/SiCp(17 vol.%) Composite material was investigated over the temperature range from 698 K to 823 K. It was shown that the 2124/SiCpcomposite did not behave superplastically at strain rates of from 10-4to 10-1s-1. The strain rate sensitivity was found to be about 0.17, which was apparently below that (0.5) of a superplastic material. The activation energy for high temperature deformation was much greater than that of superplastic aluminum alloys. Numerous cavities on the fracture surfaces of the composite were observed by SEM. The high-temperature deformation of the composite was compared with superplastic behavior of 8090/SiCpcomposite, and the reasons for the 2124/SiCpcomposite not showing superplastic properties were explained according to superplastic deformation mechanism and the composite itself.
Original languageEnglish
Pages (from-to)395-398
Number of pages4
JournalJournal of Materials Processing Technology
Volume63
Issue number1-3
DOIs
Publication statusPublished - 1 Jan 1997

Keywords

  • Aluminum matrix composite
  • High-temperature deformation
  • Superplastic deformation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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