Strengthening mechanisms in Al-based and Zr-based amorphous nanocomposites

Hyoung Seop Kim, Sun Ig Hong, Hidemi Kato, Akihisa Inoue

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Devitrified Al-based and Zr-based amorphous alloy nanocomposites with nanoscale precipitates of element, compound or quasicrystalline particles are regarded as new prospective structural materials with good mechanical properties. In order to analyse the strengthening behaviour of the partially devitrified amorphous nanocomposites, a phase mixture model is presented, in which the partially crystallised Al-based or the Zr-based amorphous alloys is regarded as a nanocomposite of nanoscale particles and the remaining amorphous matrix. Most attention is paid to the change of solute concentration in the matrix. The element, compound or quasicrystalline particles are treated as perfect materials. The matrices are treated as amorphous materials, in which the solute concentrations change depending on the solute concentration and volume fraction of precipitate particles. Investigating the solute concentration changes associated with overall mechanical properties could prove that the phase mixture model can successfully describe the strengthening mechanism in the devitrified Al-based and Zr-based amorphous nanocomposites.

Original languageEnglish
Pages (from-to)2026-2030
Number of pages5
JournalMaterials Transactions
Volume43
Issue number8
DOIs
Publication statusPublished - 2002 Aug
Externally publishedYes

Keywords

  • Aluminium-based alloy
  • Bulk amorphous alloy
  • Devitrified nanocomposite
  • Phase mixture model
  • Strengthening mechanism
  • Zirconium-based alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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