Icosahedral quasicrystal phase in Mg-Zn-Nd ternary system

被引：22
|
作者：
Zhang, J. S. [1 ]
Yan, J. [1 ]
Liang, W. [1 ]
Xu, C. X. [1 ]
Zhou, C. L. [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 30期
基金：
美国国家科学基金会;
关键词：
Quasicrystal; Mg-Zn-Nd; Ternary alloy; Microstructure;
D O I：
10.1016/j.matlet.2008.08.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mg-Zn-Nd master alloy containing icosahedral quasicrystal phase with an interesting macro-shape has been prepared under conventional casting conditions. The microstructures and phases of Mg-Zn-Nd ternary alloy have been investigated by using SEM, EDS and TEM. The results show that the spherical phase in Mg-Zn-Nd master alloy is a simple icosahedral quasicrystal with stoichiometric composition of Mg40Zn55Nd5 and quasilattice a(R) = 0.525 nm. In this research, when the content of Nd is 1.20 at.% and atom ratio value of Mg/Zn at the range of 2.4-2.7, the as-cast solidification microstructure mainly consists of primary I-phase and Mg7Zn3 single-phase matrix. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4489 / 4491
页数：3
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