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

页码：4489 / 4491

页数：3

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