As-cast quasicrystalline phase in a Zr-based multicomponent bulk alloy

被引：64

作者：

Kühn, U ^{[1
]}

Eckert, J ^{[1
]}

Mattern, N ^{[1
]}

Schultz, L ^{[1
]}

机构：

[1] IFW Dresden, D-01171 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 20期

关键词：

D O I：

10.1063/1.1326036

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An icosahedral quasicrystalline phase is obtained directly from the melt by copper mold casting of a Zr57Ti8Nb2.5Cu13.9Ni11.1Al7.5 alloy. On the other hand, rapid quenching of the alloy leads to an amorphous phase. Upon annealing, the amorphous structure precipitates quasicrystals in the first stage of crystallization. The microstructure of the quasicrystalline state is quite different for the two preparation routes, which is correlated with the asymmetry of the nucleation and growth rate upon cooling or heating. The quasicrystals formed upon slow cooling from the melt have a size of about 1 mum. In contrast, the quasicrystals formed by annealing do not exceed a size of 5-10 nm. (C) 2000 American Institute of Physics. [S0003-6951(00)03246-0].

引用

页码：3176 / 3178

页数：3

共 18 条

[1] STRUCTURE OF RAPIDLY QUENCHED AL-MN [J].