Production of Al/Al 2O 3 nanocomposites through consolidation by high-pressure torsion

Maki Ashida, Zenji Horita, Takuji Kita, Akira Kato

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Aluminum nanocomposites containing 30 vol%Al 2O 3 were produced by severe plastic deformation using high-pressure torsion (HPT). HPT was conducted at room temperature under a pressure of 6.0 GPa for disk samples (Disk-HPT) and 3.0 GPa for ring samples (Ring-HPT). For comparison, an alternate rotation (Cyclic-HPT) was also adopted to check any difference in the microstructural development. Ring-HPT showed a more uniform dispersion of Al 2O 3 particles in the Al matrix and higher hardness values than those obtained by Disk-HPT. Agglomeration of Al 2O 3 particles was observed for any condition of HPT but the agglomerates were smaller in size, less in volume and more finely distributed in Ring-HPT than in Disk-HPT.

Original languageEnglish
Pages (from-to)13-16
Number of pages4
JournalMaterials Transactions
Volume53
Issue number1
DOIs
Publication statusPublished - Mar 21 2012

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consolidation
Consolidation
Torsional stress
torsion
Nanocomposites
nanocomposites
rings
agglomeration
Aluminum
plastic deformation
hardness
Plastic deformation
Agglomeration
Hardness
aluminum

All Science Journal Classification (ASJC) codes

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

Cite this

Production of Al/Al 2O 3 nanocomposites through consolidation by high-pressure torsion. / Ashida, Maki; Horita, Zenji; Kita, Takuji; Kato, Akira.

In: Materials Transactions, Vol. 53, No. 1, 21.03.2012, p. 13-16.

Research output: Contribution to journalArticle

Ashida, Maki ; Horita, Zenji ; Kita, Takuji ; Kato, Akira. / Production of Al/Al 2O 3 nanocomposites through consolidation by high-pressure torsion. In: Materials Transactions. 2012 ; Vol. 53, No. 1. pp. 13-16.
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