Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions

Hideaki Hasegawa; Shogo Komura; Atsushi Utsunomiya; Zenji Horita; Minoru Furukawa; Minoru Nemoto; Terence G. Langdon

doi:10.1016/s0921-5093(98)01136-8

Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions

Hideaki Hasegawa, Shogo Komura, Atsushi Utsunomiya, Zenji Horita, Minoru Furukawa, Minoru Nemoto, Terence G. Langdon

Materials Processing

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

184 Citations (Scopus)

Abstract

Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.

Original language	English
Pages (from-to)	188-196
Number of pages	9
Journal	Materials Science and Engineering A
Volume	265
Issue number	1-2
DOIs	https://doi.org/10.1016/s0921-5093(98)01136-8
Publication status	Published - Jun 15 1999

All Science Journal Classification (ASJC) codes

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

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title = "Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions",

abstract = "Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.",

author = "Hideaki Hasegawa and Shogo Komura and Atsushi Utsunomiya and Zenji Horita and Minoru Furukawa and Minoru Nemoto and Langdon, {Terence G.}",

note = "Funding Information: We thank Takayoshi Fujinami, Hiroaki Kawahara and Yoshinori Iwahashi for experimental assistance. 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, Science, Sports and Culture of Japan, in part by the Japan Society for the Promotion of Science, and in part by the National Science Foundation of the United States under Grants No. DMR-9625969 and INT-9602919.",

year = "1999",

month = jun,

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doi = "10.1016/s0921-5093(98)01136-8",

language = "English",

volume = "265",

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T1 - Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions

AU - Hasegawa, Hideaki

AU - Komura, Shogo

AU - Utsunomiya, Atsushi

AU - Horita, Zenji

AU - Furukawa, Minoru

AU - Nemoto, Minoru

AU - Langdon, Terence G.

N1 - Funding Information: We thank Takayoshi Fujinami, Hiroaki Kawahara and Yoshinori Iwahashi for experimental assistance. 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, Science, Sports and Culture of Japan, in part by the Japan Society for the Promotion of Science, and in part by the National Science Foundation of the United States under Grants No. DMR-9625969 and INT-9602919.

PY - 1999/6/15

Y1 - 1999/6/15

N2 - Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.

AB - Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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