Thermal stability of decagonal quasicrystal prepared from undercooled Al72Ni12Co16 alloy melt

被引：7
|
作者：
Liu, Xinbao [1 ]
Osawa, Yoshiaki
Takamori, Susumu
Yang, Gencang
机构：
[1] Natl Inst Mat Sci, Struct Met Ctr, Lightweight Alloys Grp, Tsukuba 3050047, Japan
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
MATERIALS LETTERS | 2007年 / 61卷 / 29期
基金：
中国国家自然科学基金;
关键词：
decagonal quasicrystal; undercooling; thermal properties; heat treatment; X-ray technique;
D O I：
10.1016/j.matlet.2007.04.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The thermal stability of the single-phase decagonal quasicrystal produced directly from the undercooled Al72Ni12CO16 alloy melt was investigated by different heat treatments. The optical microscopy, TEM, X-ray powder diffractometer (XRD) and differential thermal analyzer (DTA) techniques were adopted to observe the microstructure and to characterize the phase composition, respectively. Based on the analyses of the X-ray diffraction patterns and the DTA curves, two modifications of the decagonal quasicrystal existed in the annealed samples, which have a close structural relationship to the decagonal quasicrystal. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：5164 / 5168
页数：5
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