Decagonal quasicrystals in Al-Co and ternary alloys containing Cu and Ni

被引：41

作者：

Grushko, B ^{[1
]}

HollandMoritz, D ^{[1
]}

Bickmann, K ^{[1
]}

机构：

[1] DLR, INST RAUMSIMULAT, D-51140 COLOGNE, GERMANY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 236卷 / 1-2期

关键词：

intermetallics; quasicrystals; Al-Co-(Ni; Cu);

D O I：

10.1016/0925-8388(95)02187-6

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：

Investigation of a series of Al-Co-(Cu,Ni) alloys of composition adjacent to Al3Co is reported. The metastable nature of the Al-Co decagonal phase produced by rapid solidification was confirmed. This phase was found to form preferentially at compositions of about 72-74 at.% Al. At lower cooling rates, achievable by conventional solidification, decagonal-like metastable structures can be formed in the same compositional range, corresponding to the binary Al5Co2-Z range of the equilibrium phase diagram (Grushko et al., J. Alloys Comp., 233 (1996) 279). The relation between these binary phases and the stable decagonal phases in Al-Co-Cu and Al-Co-Ni is discussed.

引用

页码：243 / 252

页数：10