High-strength Zr-Nb-(Cu,Ni,Al) composites with enhanced plasticity

被引：111
|
作者：
Das, J [1 ]
Löser, W
Kühn, U
Eckert, J
Roy, SK
Schultz, L
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
[2] IFW Dresden, Inst Met Werkstoffe, D-01171 Dresden, Germany
来源：
APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 26期
关键词：
D O I：
10.1063/1.1587254
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Zr73.5Nb9Cu7Ni1Al9.5 and Zr66.4Nb6.4Cu10.5Ni8.7Al8.0 composites of bcc beta-Zr(Nb) dendrites embedded in a nanocrystalline matrix were prepared by slow cooling from melt. The increase of Nb content from 6.4 to 9 at. % slightly reduces the strength, but considerably improves the plastic elongation under uniaxial compressive loading from epsilon(p)=0.6% to 14.8%. The interaction of strain with dendrites and the nanocrystalline matrix is suggested as origin of the improvement of the mechanical properties. (C) 2003 American Institute of Physics.
引用
收藏
页码：4690 / 4692
页数：3
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