High-strain-rate deformation of pure aluminum reinforced with 25% alumina submicron particles near the solidus temperature

B. Q. Han*, S. R. Agnew, D. C. Dunand

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The mechanical properties at room and elevated temperatures of dispersion-strengthened-cast aluminum (DSC-Al) with high volume fractions of submicron Al2O3 oxide dispersoids were investigated. DSC-Al was reinforced with 25% Al2O3 to see whether it can exhibit high-strain-rate superplasticity near the solidus temperature. High temperature tensile tests were performed on DSC-Al at temperatures 14 K and 4 K below the solidus temperature and at strain rates between 7.4·10-3 s-1 and 2.5 s-1. While the room temperature ductility of DSC-Al is quite high, its formability at elevated temperatures is limited by its high creep strength and low creep ductility.

Original languageEnglish (US)
Pages (from-to)801-808
Number of pages8
JournalScripta Materialia
Volume40
Issue number7
DOIs
StatePublished - Mar 5 1999

Funding

Financial support from the National Science Foundation under grant No. DMR 9417636 (Dr. Bruce McDonald monitor) is gratefully acknowledged. Discussions with Dr. Rahul Mitra (Northwestern University) on interfacial issues were very helpful.

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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