The Requirements for Superplasticity with an Emphasis on Magnesium Alloys

被引：31

作者：

Kawasaki, Megumi ^{[1
,4
,5
]}

Figueiredo, Roberto B. ^{[2
]}

Langdon, Terence G. ^{[3
,4
,5
]}

机构：

[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[2] Univ Fed Minas Gerais, Dept Mat Engn & Civil Construct, BR-31270901 Belo Horizonte, MG, Brazil

[3] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England

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

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

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 01期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

LOW-TEMPERATURE SUPERPLASTICITY; STRAIN-RATE SUPERPLASTICITY; HIGH-PRESSURE TORSION; AL-MG ALLOYS; GRAIN-REFINEMENT; DEFORMATION MECHANISMS; ELEVATED-TEMPERATURES; EXCEPTIONAL DUCTILITY; INTERNAL-FRICTION; CREEP-BEHAVIOR;

D O I：

10.1002/adem.201500068

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Superplasticity is defined formally as a tensile elongation of at least 400% and a strain rate sensitivity of approximate to 0.5. It is now well established that superplasticity occurs only in materials having very small grain sizes, typically less than approximate to 10 mu m. These small grains may be achieved in two different ways in magnesium alloys: either by thermomechanical processing or through the occurrence of recrystallization in the early stages of deformation in alloys tested with coarse grain sizes.

引用

页码：127 / 131

页数：5

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