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

doi:10.1016/S1359-6462(99)00013-5

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

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 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 language	English (US)
Pages (from-to)	801-808
Number of pages	8
Journal	Scripta Materialia
Volume	40
Issue number	7
DOIs	https://doi.org/10.1016/S1359-6462(99)00013-5
State	Published - Mar 5 1999

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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

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.",

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AU - Han, B. Q.

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N2 - 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.

AB - 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.

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