High-strain-rate superplastic behavior of ingot-processed Al-Mg-Fe alloy

被引：13

作者：

Kim, JK ^{[1
]}

Shin, DH

Kim, WJ

机构：

[1] Hanyang Univ, Dept Met & Mat Sci, Ansan 425791, South Korea

[2] Hongik Univ, Dept Met & Mat Sci, Mapo Ku, Seoul, South Korea

来源：

SCRIPTA MATERIALIA | 1998年 / 38卷 / 06期

关键词：

D O I：

10.1016/S1359-6462(97)00560-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

HSRS Al-7Mg-1Fe alloy could be obtained from an ingot by utilizing warm-rolling process only. The strain rate-stress relationship of this alloy turned out to be very similar to that of coarse-grained Al-7Mg binary alloy in terms of n value, creep strength and activation energy for creep. The final microstructure shows the fine subgrain formation within grains of 10≃15 μm. Uniform dispersion of fine Al3Fe was not observed. Tensile elongations of upto 450%, however, could be achieved near at a strain rate of 10-1 s-1 at 465°C and 480°C. Contribution of fine subgrains to superplasticity should be studied further.

引用

页码：991 / 998

页数：8

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