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

Maki Ashida; Zenji Horita; Takuji Kita; Akira Kato

doi:10.2320/matertrans.MD201128

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 journal › Article › peer-review

32 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 language	English
Pages (from-to)	13-16
Number of pages	4
Journal	Materials Transactions
Volume	53
Issue number	1
DOIs	https://doi.org/10.2320/matertrans.MD201128
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

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

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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.",

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AU - Ashida, Maki

AU - Horita, Zenji

AU - Kita, Takuji

AU - Kato, Akira

PY - 2012

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AB - 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.

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

Abstract

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