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

被引：109

作者：

Furui, M

Xu, C

Aida, T

Inoue, M

Anada, H

Langdon, TG

机构：

[1] Toyama Univ, Fac Engn, Dept Syst Engn Mat & Life Sci, Toyama 9308555, Japan

[2] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[3] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[4] Toyama Univ, Fac Engn, Dept Mech & Intelligent Syst Engn, Toyama 9308555, Japan

[5] Toyama Natl Coll Technol, Dept Ecomat Engn, Toyama 9398630, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 410卷

基金：

美国国家科学基金会;

关键词：

equal-channel angular pressing; magnesium-lithium alloy; strain rate sensitivity; superplasticity; TENSILE PROPERTIES; MAGNESIUM ALLOY;

D O I：

10.1016/j.msea.2005.08.143

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

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 degrees 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 similar to 970% at 473 K when using an initial strain rate of 1.0 X 10(-4) s(-1). The strain rate sensitivities under the optimum superplastic conditions were measured as m approximate to 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. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：439 / 442

页数：4

共 15 条

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