Achieving high strength and high ductility in precipitation-hardened alloys

Zenji Horita, Kunihiro Ohashi, Takeshi Fujita, Kenji Kaneko, Terence G. Langdon

Research output: Contribution to journalReview article

228 Citations (Scopus)

Abstract

A technique for producing high strength and high ductility in precipitation-hardened alloys at ambient temperatures, based on introduction of intermediate metastable phases into ultrafine-grained microstructures was investigated. The investigation was conducted using an aluminum-silver alloy containing 10.8 wt.% Ag. The precipitation of stable γ-phase particles onto the grain boundaries after aging for 10 h, was observed, with the particles having an average size range of ∼100-200 nm. The results show that sampler processed and aged with this technique, exhibits a stress-strain curve having a region of strain hardening, an extensive uniform strain, and high tensile ductility.

Original languageEnglish
Pages (from-to)1599-1602
Number of pages4
JournalAdvanced Materials
Volume17
Issue number13
DOIs
Publication statusPublished - Jul 4 2005

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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