Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP

Yuichi Miyahara; Zenji Horita; Terence G. Langdon

doi:10.1016/j.msea.2006.01.043

Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP

Yuichi Miyahara
, Zenji Horita
, Terence G. Langdon

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

163 被引用数 (Scopus)

抄録

Experiments were conducted on a commercial AZ61 alloy to evaluate the potential for achieving an ultrafine grain size and superplastic ductilities through the use of the EX-ECAP two-step processing procedure of extrusion plus equal-channel angular pressing. The results show that EX-ECAP gives excellent grain refinement with grain sizes of ∼0.6 and ∼1.3 μm after pressing at 473 and 523 K, respectively. The alloy processed by EX-ECAP exhibits exceptional superplastic properties including a maximum elongation of 1320% after pressing through four passes when testing at 473 K with an initial strain rate of 3.3 × 10^-4 s^-1. This result compares with an elongation of ∼70% achieved in the extruded condition without ECAP under similar testing conditions.

本文言語	英語
ページ（範囲）	240-244
ページ数	5
ジャーナル	Materials Science and Engineering: A
巻	420
号	1-2
DOI	https://doi.org/10.1016/j.msea.2006.01.043
出版ステータス	出版済み - 3月 25 2006

!!!All Science Journal Classification (ASJC) codes

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.2006.01.043

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@article{39406cbc7b0f4f06ad72d8da6b0fe835,

title = "Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP",

abstract = "Experiments were conducted on a commercial AZ61 alloy to evaluate the potential for achieving an ultrafine grain size and superplastic ductilities through the use of the EX-ECAP two-step processing procedure of extrusion plus equal-channel angular pressing. The results show that EX-ECAP gives excellent grain refinement with grain sizes of ∼0.6 and ∼1.3 μm after pressing at 473 and 523 K, respectively. The alloy processed by EX-ECAP exhibits exceptional superplastic properties including a maximum elongation of 1320\% after pressing through four passes when testing at 473 K with an initial strain rate of 3.3 {\texttimes} 10-4 s-1. This result compares with an elongation of ∼70\% achieved in the extruded condition without ECAP under similar testing conditions.",

author = "Yuichi Miyahara and Zenji Horita and Langdon, \{Terence G.\}",

note = "Funding Information: We are grateful to Dr. Bodo Gerold of BIOTRONIK GmbH \& Co., Erlangen, Germany, for supplying the extruded AZ61 alloy. This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, in part by the Light Metals Educational Foundation of Japan and in part by the National Science Foundation of the United States under Grant No. DMR-0243331.",

year = "2006",

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doi = "10.1016/j.msea.2006.01.043",

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T1 - Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP

AU - Miyahara, Yuichi

AU - Horita, Zenji

AU - Langdon, Terence G.

N1 - Funding Information: We are grateful to Dr. Bodo Gerold of BIOTRONIK GmbH & Co., Erlangen, Germany, for supplying the extruded AZ61 alloy. This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, in part by the Light Metals Educational Foundation of Japan and in part by the National Science Foundation of the United States under Grant No. DMR-0243331.

PY - 2006/3/25

Y1 - 2006/3/25

N2 - Experiments were conducted on a commercial AZ61 alloy to evaluate the potential for achieving an ultrafine grain size and superplastic ductilities through the use of the EX-ECAP two-step processing procedure of extrusion plus equal-channel angular pressing. The results show that EX-ECAP gives excellent grain refinement with grain sizes of ∼0.6 and ∼1.3 μm after pressing at 473 and 523 K, respectively. The alloy processed by EX-ECAP exhibits exceptional superplastic properties including a maximum elongation of 1320% after pressing through four passes when testing at 473 K with an initial strain rate of 3.3 × 10-4 s-1. This result compares with an elongation of ∼70% achieved in the extruded condition without ECAP under similar testing conditions.

AB - Experiments were conducted on a commercial AZ61 alloy to evaluate the potential for achieving an ultrafine grain size and superplastic ductilities through the use of the EX-ECAP two-step processing procedure of extrusion plus equal-channel angular pressing. The results show that EX-ECAP gives excellent grain refinement with grain sizes of ∼0.6 and ∼1.3 μm after pressing at 473 and 523 K, respectively. The alloy processed by EX-ECAP exhibits exceptional superplastic properties including a maximum elongation of 1320% after pressing through four passes when testing at 473 K with an initial strain rate of 3.3 × 10-4 s-1. This result compares with an elongation of ∼70% achieved in the extruded condition without ECAP under similar testing conditions.

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UR - https://www.scopus.com/pages/publications/33645542005#tab=citedBy

U2 - 10.1016/j.msea.2006.01.043

DO - 10.1016/j.msea.2006.01.043

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SN - 0921-5093

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SP - 240

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP

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!!!All Science Journal Classification (ASJC) codes

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