A study of high-Co Al-Ni-Co decagonal phase

被引：7
作者：
Grushko, B
Döblinger, M
Wittmann, R
Holland-Moritz, D
机构：
[1] DLR, Inst Raumsimulat, D-51170 Cologne, Germany
[2] Univ Karlsruhe, LEM, D-76128 Karlsruhe, Germany
[3] Forschungszentrum Julich, IFF, D-52425 Julich, Germany
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 342卷 / 1-2期
关键词：
Al-Ni-Co; phase transition; electron diffraction;
D O I：
10.1016/S0925-8388(02)00119-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The stability and transformation behavior of the decagonal phase was studied at the composition Al(72)Co(15.5)Ni(12.5). Similarly to the decagonal phase at high Ni-contents, it can transform with partitioning. The transformation requires significantly longer annealing times (up to several thousands of hours) and for the studied compositions results in the formation of the X-phase and the decagonal phase with higher-Ni composition than the initial decagonal phase. For shorter times, formation of a series of intermediate metastable states is observed. Some of them are identified with the structures reported earlier, to be specific variants of the high-Co decagonal phase. (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：30 / 34
页数：5
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