Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation

Yoji Miyajima; Masatoshi Mitsuhara; Satoshi Hata; Hideharu Nakashima; Nobuhiro Tsuji

doi:10.1016/j.msea.2010.09.058

Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation

Yoji Miyajima, Masatoshi Mitsuhara, Satoshi Hata, Hideharu Nakashima, Nobuhiro Tsuji

Materials Physics and Engineering

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

71 Citations (Scopus)

Abstract

Dislocation density within ultrafine grains in severely deformed aluminium was evaluated by the scanning transmission electron microscopy. The values were around 10¹⁴m^-2 in commercial pure aluminium samples with equivalent strain up to 10. The obtained dislocation densities values correspond to strength between 55MPa and 70MPa according to the Bailey-Hirsch relationship.

Original language	English
Pages (from-to)	776-779
Number of pages	4
Journal	Materials Science and Engineering A
Volume	528
Issue number	2
DOIs	https://doi.org/10.1016/j.msea.2010.09.058
Publication status	Published - Dec 15 2010

All Science Journal Classification (ASJC) codes

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

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10.1016/j.msea.2010.09.058

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Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation. / Miyajima, Yoji; Mitsuhara, Masatoshi ; Hata, Satoshi et al.

In: Materials Science and Engineering A, Vol. 528, No. 2, 15.12.2010, p. 776-779.

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

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title = "Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation",

abstract = "Dislocation density within ultrafine grains in severely deformed aluminium was evaluated by the scanning transmission electron microscopy. The values were around 1014m-2 in commercial pure aluminium samples with equivalent strain up to 10. The obtained dislocation densities values correspond to strength between 55MPa and 70MPa according to the Bailey-Hirsch relationship.",

author = "Yoji Miyajima and Masatoshi Mitsuhara and Satoshi Hata and Hideharu Nakashima and Nobuhiro Tsuji",

note = "Funding Information: This study was financially supported by the Grant-in-Aid for Young Scientists (B), No. 22760556 and Grand-in-aid for Scientific Research on Innovative Area, “Bulk Nanostructured Metals” through the Japan Society for the Promotion of Science (JSPS) and the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The STEM observation was supported by the Nanotechnology Support Project of the MEXT. The authors thank to Dr. Stephen Lyth for checking the manuscript.",

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AU - Nakashima, Hideharu

AU - Tsuji, Nobuhiro

N1 - Funding Information: This study was financially supported by the Grant-in-Aid for Young Scientists (B), No. 22760556 and Grand-in-aid for Scientific Research on Innovative Area, “Bulk Nanostructured Metals” through the Japan Society for the Promotion of Science (JSPS) and the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The STEM observation was supported by the Nanotechnology Support Project of the MEXT. The authors thank to Dr. Stephen Lyth for checking the manuscript.

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Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation

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