Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites

Maki Ashida; Zenji Horita

doi:10.1007/s10853-012-6679-5

Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites

Maki Ashida, Zenji Horita

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Pure Al powders were mixed with a 30 % volume fraction of Al ₂O ₃ powders having particle sizes of ∼30 nm. The mixed powders were first subjected to ball milling (BM) and thereafter consolidated by high-pressure torsion (HPT) at room temperature under a pressure of 3 GPa for 10 turns. The Al-Al ₂O ₃ composite produced by BM and HPT (BM + HPT) had a more uniform dispersion of the nano-sized Al ₂O ₃ particles in the Al matrix. Hardness values of the BM + HPT composites were higher than those of the composites without BM. It is shown that the use of BM powders for HPT is more effective in achieving a uniform dispersion of the nano-sized Al ₂O ₃ particles and in improving mechanical properties of the Al-Al ₂O ₃ nanocomposites.

Original language	English
Pages (from-to)	7821-7827
Number of pages	7
Journal	Journal of Materials Science
Volume	47
Issue number	22
DOIs	https://doi.org/10.1007/s10853-012-6679-5
Publication status	Published - Nov 2012

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites",

abstract = "Pure Al powders were mixed with a 30 % volume fraction of Al 2O 3 powders having particle sizes of ∼30 nm. The mixed powders were first subjected to ball milling (BM) and thereafter consolidated by high-pressure torsion (HPT) at room temperature under a pressure of 3 GPa for 10 turns. The Al-Al 2O 3 composite produced by BM and HPT (BM + HPT) had a more uniform dispersion of the nano-sized Al 2O 3 particles in the Al matrix. Hardness values of the BM + HPT composites were higher than those of the composites without BM. It is shown that the use of BM powders for HPT is more effective in achieving a uniform dispersion of the nano-sized Al 2O 3 particles and in improving mechanical properties of the Al-Al 2O 3 nanocomposites.",

author = "Maki Ashida and Zenji Horita",

note = "Funding Information: Acknowledgements This work was supported in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan in the Innovative Area {\textquoteleft}{\textquoteleft}Bulk Nanostructured Metals{\textquoteright}{\textquoteright}, and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P).",

year = "2012",

month = nov,

doi = "10.1007/s10853-012-6679-5",

language = "English",

volume = "47",

pages = "7821--7827",

journal = "Journal of Materials Science",

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T1 - Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites

AU - Ashida, Maki

AU - Horita, Zenji

N1 - Funding Information: Acknowledgements This work was supported in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan in the Innovative Area ‘‘Bulk Nanostructured Metals’’, and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P).

PY - 2012/11

Y1 - 2012/11

N2 - Pure Al powders were mixed with a 30 % volume fraction of Al 2O 3 powders having particle sizes of ∼30 nm. The mixed powders were first subjected to ball milling (BM) and thereafter consolidated by high-pressure torsion (HPT) at room temperature under a pressure of 3 GPa for 10 turns. The Al-Al 2O 3 composite produced by BM and HPT (BM + HPT) had a more uniform dispersion of the nano-sized Al 2O 3 particles in the Al matrix. Hardness values of the BM + HPT composites were higher than those of the composites without BM. It is shown that the use of BM powders for HPT is more effective in achieving a uniform dispersion of the nano-sized Al 2O 3 particles and in improving mechanical properties of the Al-Al 2O 3 nanocomposites.

AB - Pure Al powders were mixed with a 30 % volume fraction of Al 2O 3 powders having particle sizes of ∼30 nm. The mixed powders were first subjected to ball milling (BM) and thereafter consolidated by high-pressure torsion (HPT) at room temperature under a pressure of 3 GPa for 10 turns. The Al-Al 2O 3 composite produced by BM and HPT (BM + HPT) had a more uniform dispersion of the nano-sized Al 2O 3 particles in the Al matrix. Hardness values of the BM + HPT composites were higher than those of the composites without BM. It is shown that the use of BM powders for HPT is more effective in achieving a uniform dispersion of the nano-sized Al 2O 3 particles and in improving mechanical properties of the Al-Al 2O 3 nanocomposites.

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JO - Journal of Materials Science

JF - Journal of Materials Science

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ER -

Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites

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