Monkman-grant analysis of creep fracture in dispersion-strengthened and particulate-reinforced aluminum

D. C. Dunand, B. Q. Han, A. M. Jansen

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The tensile creep fracture properties of coarse-and fine-grained dispersion-strengthened-cast aluminum (DSC-Al) with 25 vol pct of submicron alumina dispersoids are presented for temperatures between 335 °C and 500 °C and stresses between 30 and 100 MPa. The primary, secondary, and tertiary creep strains are analyzed in terms of the minimum creep rate, applied stress, and temperature. Good agreement with the original and the modified Monkman-Grant relationships is found for the failure time of DSC-Al and other aluminum materials reinforced with dispersoids or particulates. The origin of the Monkman-Grant relationships for these materials is discussed in terms of stress exponents, specific interfacial areas, and ratio of secondary strain to failure strain.

Original languageEnglish (US)
Pages (from-to)829-838
Number of pages10
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume30
Issue number13
DOIs
StatePublished - Mar 1 1999

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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