Temperature dependence of the electrical resistivity of Mg-Zn-Y quasicrystal alloy

被引：5
作者：
Geng, Jiwei [1 ]
Teng, Xinying [1 ]
Zhou, Guorong [1 ]
Zhao, Degang [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 132卷
关键词：
Metals and alloys; Microstructure; Icosahedral quasicrystal; Resistivity; Icosahedral short-range order; TRANSFORMATIONS; PHASE; ORDER; LIQUIDS;
D O I：
10.1016/j.matlet.2014.06.076
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Resistivity of Mg63.5Zn34Y2.5 alloy including icosahedral quasicrystalline phase (I-phase) was measured. It shows that the quasicrystal alloy has a negative temperature coefficient of resistivity (TCR) before melting of I-phase. The TCR shows a reversible transition at similar to 1073 K during heating and cooling processes, involving evolution of icosahedral short-range orders (ISROs) inheriting from I-phase. The pre-existing ISROs act as templates in liquid and promote the nucleation of I-phase. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：334 / 337
页数：4
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