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 journalArticlepeer-review

23 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 - 2012

All Science Journal Classification (ASJC) codes

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

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