Effect of Mg Content on High Strain Rate Superplasticity of Al-Mg-Sc-Zr Alloys Subjected to Equal-Channel Angular Pressing

被引：8

作者：

Kaibyshev, Rustam ^{[1
]}

Zhemchuzhnikova, Daria ^{[1
]}

Mogucheva, Anna ^{[1
]}

机构：

[1] Belgorod State Univ, Belgorod 308015, Russia

来源：

SUPERPLASTICITY IN ADVANCED MATERIALS | 2013年 / 735卷

关键词：

aluminium alloy; equal channel angular pressing; ultrafine grained structure; GRAIN-REFINEMENT; EVOLUTION; BEHAVIOR;

D O I：

10.4028/www.scientific.net/MSF.735.265

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminium alloys with a chemical compositions of Al-5.8Mg-0.52Mn-0.2Sc-0.07Zr-0.16Fe-0.1Si and Al-5.4Mg-0.34Mn-0.2Sc-0.07Zr-0.07Fe-0.02Si (in weight %), denoted as 1570 and 1570C, respectively, were processed by equal-channel angular pressing at 300 degrees C up to strain epsilon similar to 12. Extensive grain refinement provided the formation of fully recrystallized structure with the average grain sizes of 0.7 and 0.6 mu m, respectively. Tensile tests were carried out in the temperature interval 200-550 degrees C at strain rates ranging from 10(4) to 10(-1) s(-1). Very high tensile elongations (>1000%) were achieved in the both alloys at T >= 350 degrees C and strain rates higher than 10(-3) s(-1).

引用

页码：265 / 270

页数：6

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