Nucleation behavior of Al-Mn icosahedral phase

被引：74

作者：

Bendersky, L. A. ^{[1
,2
]}

Ridder, S. D. ^{[1
]}

机构：

[1] Natl Bur Stand, Div Met, Gaithersburg, MD 20899 USA

[2] Johns Hopkins Univ, Ctr Mat Res, Baltimore, MD 21218 USA

来源：

JOURNAL OF MATERIALS RESEARCH | 1986年 / 1卷 / 03期

关键词：

D O I：

10.1557/JMR.1986.0405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrohydrodynamic (EHD) atomization has been used to rapidly solidify micron and submicron size droplets of Al-14 at. % Mn to study nucleation behavior of icosahedral phase. Icosahedral grain size has been found to decrease continuously with decreasing droplet size. Based on this result, formation of the icosahedral phase is explained by homogeneous nucleation. Extremely low resistance to nucleation of icosahedral phase can be understood if possible topological similarities between liquid and icosahedral quasicrystal are considered. Formation of glass as conflgurationally frozen liquid in Al-Mn and similar alloy systems is questionable, implying that the reported Al-Mn glass probably has a microquasicrystalline structure.

引用

页码：405 / 414

页数：10

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