The aging response and creep of DRA composites

Michael B. House, Kenneth C. Meinert, Ram B. Bhagat

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The hardening rates of 6061/SiC/20w and 6061/Al2O2/15p are significantly higher than that of wrought 6061 Al. The whisker composite retains its tensile strength over a broad range of aging times (up to 500 hours). Under identical aging conditions, the tensile strength of the whisker composite is about 65% higher than that of the particulate composite and wrought aluminum. Likewise, the stiffness of the whisker composite is approximately 60% higher than that of the other two materials (which have similar stiffnesses). At 350°C, the whisker composite has about 55% higher strength than the particulate composite and the wrought aluminum, in comparison with a 111% advantage at room temperature. The whisker composite shows better resistance to creep than the particulate composite and wrought aluminum; the improvement is almost two orders of magnitude in terms of the steady-state creep rate.

Original languageEnglish (US)
Pages (from-to)24-28
Number of pages5
JournalJOM
Volume43
Issue number8
DOIs
StatePublished - Aug 1 1991

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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