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

^*Corresponding author for this work

Materials Design and Engineering

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

115 Scopus citations

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.

Original language	English
Pages (from-to)	439-442
Number of pages	4
Journal	Materials Science and Engineering A
Volume	410-411
DOIs	https://doi.org/10.1016/j.msea.2005.08.143
State	Published - 2005/11/25

Keywords

Equal-channel angular pressing
Magnesium-lithium alloy
Strain rate sensitivity
Superplasticity

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2005.08.143

Cite this

@article{e9bd8264912a415081cfc5a7655229aa,

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",

volume = "410-411",

pages = "439--442",

journal = "Materials Science and Engineering A",

issn = "0921-5093",

publisher = "Elsevier Ltd.",

}

TY - JOUR

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

UR - http://www.scopus.com/inward/record.url?scp=28844438935&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2005.08.143

DO - 10.1016/j.msea.2005.08.143

M3 - 学術論文

AN - SCOPUS:28844438935

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this