High strain rate superelasticity in an Al-Mg alloy containing scandium

Shogo Komura; Patrick B. Berbon; Minoru Furukawa; Zenji Horita; Minoru Nemoto; Terence G. Langdon

doi:10.1016/S1359-6462(98)00099-2

High strain rate superelasticity in an Al-Mg alloy containing scandium

Shogo Komura, Patrick B. Berbon, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Terence G. Langdon

Materials Processing

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

125 Citations (Scopus)

Abstract

1. A cast alloy of Al-3% Mg-0.2% Sc was subjected to equal-channel angular pressing at room temperature to a total strain of ∼8. Following ECA pressing, the microstructure was heterogeneous with small areas of subgrains interspersed within larger areas of grains having boundaries with high angles of misorientation. The average grain size was ∼0.2 μm. 2. Static annealing revealed that the microstructure was thermally stable because of the presence of the dilute scandium addition. The grain size remained at <1 μm after annealing for 1 hour at temperatures up to 673 K. 3. The alloy exhibited high strain rate superplasticity with an elongation of 1030% when tested in tension at 673 K using an initial strain rate of 3.3 × 10^-2 s^-1.

Original language	English
Pages (from-to)	1851-1856
Number of pages	6
Journal	Scripta Materialia
Volume	38
Issue number	12
DOIs	https://doi.org/10.1016/S1359-6462(98)00099-2
Publication status	Published - May 12 1998

All Science Journal Classification (ASJC) codes

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

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@article{df0a0ab3a8c54fc1b098785dff332f41,

title = "High strain rate superelasticity in an Al-Mg alloy containing scandium",

abstract = "1. A cast alloy of Al-3% Mg-0.2% Sc was subjected to equal-channel angular pressing at room temperature to a total strain of ∼8. Following ECA pressing, the microstructure was heterogeneous with small areas of subgrains interspersed within larger areas of grains having boundaries with high angles of misorientation. The average grain size was ∼0.2 μm. 2. Static annealing revealed that the microstructure was thermally stable because of the presence of the dilute scandium addition. The grain size remained at <1 μm after annealing for 1 hour at temperatures up to 673 K. 3. The alloy exhibited high strain rate superplasticity with an elongation of 1030% when tested in tension at 673 K using an initial strain rate of 3.3 × 10-2 s-1.",

author = "Shogo Komura and Berbon, {Patrick B.} and Minoru Furukawa and Zenji Horita and Minoru Nemoto and Langdon, {Terence G.}",

note = "Funding Information: We thank Atsushi Utsunomiya 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 = "1998",

month = may,

day = "12",

doi = "10.1016/S1359-6462(98)00099-2",

language = "English",

volume = "38",

pages = "1851--1856",

journal = "Scripta Materialia",

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T1 - High strain rate superelasticity in an Al-Mg alloy containing scandium

AU - Komura, Shogo

AU - Berbon, Patrick B.

AU - Furukawa, Minoru

AU - Horita, Zenji

AU - Nemoto, Minoru

AU - Langdon, Terence G.

N1 - Funding Information: We thank Atsushi Utsunomiya 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 - 1998/5/12

Y1 - 1998/5/12

N2 - 1. A cast alloy of Al-3% Mg-0.2% Sc was subjected to equal-channel angular pressing at room temperature to a total strain of ∼8. Following ECA pressing, the microstructure was heterogeneous with small areas of subgrains interspersed within larger areas of grains having boundaries with high angles of misorientation. The average grain size was ∼0.2 μm. 2. Static annealing revealed that the microstructure was thermally stable because of the presence of the dilute scandium addition. The grain size remained at <1 μm after annealing for 1 hour at temperatures up to 673 K. 3. The alloy exhibited high strain rate superplasticity with an elongation of 1030% when tested in tension at 673 K using an initial strain rate of 3.3 × 10-2 s-1.

AB - 1. A cast alloy of Al-3% Mg-0.2% Sc was subjected to equal-channel angular pressing at room temperature to a total strain of ∼8. Following ECA pressing, the microstructure was heterogeneous with small areas of subgrains interspersed within larger areas of grains having boundaries with high angles of misorientation. The average grain size was ∼0.2 μm. 2. Static annealing revealed that the microstructure was thermally stable because of the presence of the dilute scandium addition. The grain size remained at <1 μm after annealing for 1 hour at temperatures up to 673 K. 3. The alloy exhibited high strain rate superplasticity with an elongation of 1030% when tested in tension at 673 K using an initial strain rate of 3.3 × 10-2 s-1.

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