Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP

Mitsuaki Furui; Cheng Xu; Tetsuo Aida; Makoto Inoue; Hiroshi Anada; Terence G. Langdon

doi:10.1016/j.msea.2005.08.143

Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP

Mitsuaki Furui^*, Cheng Xu, Tetsuo Aida, Makoto Inoue, Hiroshi Anada, Terence G. Langdon

^*この論文の責任著者

材料デザイン工学科

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

113 被引用数 (Scopus)

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Significant grain refinement was achieved in a cast Mg-8 mass% Li alloy through processing by equal-channel angular pressing (ECAP) using a die having an internal channel angle of 110° and a pressing temperature of 473 K. Following extrusion and subsequent ECAP through two passes, the alloy exhibited excellent superplastic properties including a maximum elongation of ∼970% at 473 K when using an initial strain rate of 1.0 × 10^-4 s^-1. The strain rate sensitivities under the optimum superplastic conditions were measured as m ≈ 0.4-0.6. The maximum elongation achieved in this investigation is very high by comparison with other Mg alloys tested in tension at similar temperatures and strain rates.

本文言語	英語
ページ（範囲）	439-442
ページ数	4
ジャーナル	Materials Science and Engineering A
巻	410-411
DOI	https://doi.org/10.1016/j.msea.2005.08.143
出版ステータス	出版済み - 2005/11/25

ASJC Scopus 主題領域

材料科学一般
凝縮系物理学
材料力学
機械工学

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10.1016/j.msea.2005.08.143

引用スタイル

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title = "Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP",

abstract = "Significant grain refinement was achieved in a cast Mg-8 mass% Li alloy through processing by equal-channel angular pressing (ECAP) using a die having an internal channel angle of 110° and a pressing temperature of 473 K. Following extrusion and subsequent ECAP through two passes, the alloy exhibited excellent superplastic properties including a maximum elongation of ∼970% at 473 K when using an initial strain rate of 1.0 × 10-4 s-1. The strain rate sensitivities under the optimum superplastic conditions were measured as m ≈ 0.4-0.6. The maximum elongation achieved in this investigation is very high by comparison with other Mg alloys tested in tension at similar temperatures and strain rates.",

keywords = "Equal-channel angular pressing, Magnesium-lithium alloy, Strain rate sensitivity, Superplasticity",

author = "Mitsuaki Furui and Cheng Xu and Tetsuo Aida and Makoto Inoue and Hiroshi Anada and Langdon, {Terence G.}",

note = "Funding Information: This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology under the Japanese Research Worker Abroad Program and by the National Science Foundation of the United States under Grant No. DMR-0243331.",

year = "2005",

month = nov,

day = "25",

doi = "10.1016/j.msea.2005.08.143",

language = "英語",

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T1 - Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP

AU - Furui, Mitsuaki

AU - Xu, Cheng

AU - Aida, Tetsuo

AU - Inoue, Makoto

AU - Anada, Hiroshi

AU - Langdon, Terence G.

N1 - Funding Information: This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology under the Japanese Research Worker Abroad Program and by the National Science Foundation of the United States under Grant No. DMR-0243331.

PY - 2005/11/25

Y1 - 2005/11/25

N2 - Significant grain refinement was achieved in a cast Mg-8 mass% Li alloy through processing by equal-channel angular pressing (ECAP) using a die having an internal channel angle of 110° and a pressing temperature of 473 K. Following extrusion and subsequent ECAP through two passes, the alloy exhibited excellent superplastic properties including a maximum elongation of ∼970% at 473 K when using an initial strain rate of 1.0 × 10-4 s-1. The strain rate sensitivities under the optimum superplastic conditions were measured as m ≈ 0.4-0.6. The maximum elongation achieved in this investigation is very high by comparison with other Mg alloys tested in tension at similar temperatures and strain rates.

AB - Significant grain refinement was achieved in a cast Mg-8 mass% Li alloy through processing by equal-channel angular pressing (ECAP) using a die having an internal channel angle of 110° and a pressing temperature of 473 K. Following extrusion and subsequent ECAP through two passes, the alloy exhibited excellent superplastic properties including a maximum elongation of ∼970% at 473 K when using an initial strain rate of 1.0 × 10-4 s-1. The strain rate sensitivities under the optimum superplastic conditions were measured as m ≈ 0.4-0.6. The maximum elongation achieved in this investigation is very high by comparison with other Mg alloys tested in tension at similar temperatures and strain rates.

KW - Equal-channel angular pressing

KW - Magnesium-lithium alloy

KW - Strain rate sensitivity

KW - Superplasticity

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DO - 10.1016/j.msea.2005.08.143

M3 - 学術論文

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SN - 0921-5093

VL - 410-411

SP - 439

EP - 442

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP

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