ICOSAHEDRAL QUASI-CRYSTALS IN AN ALMNCRSI ALLOY

被引：7

作者：

GUO, YX ^{[1
]}

HOIER, R ^{[1
]}

ANDERSEN, S ^{[1
]}

LOHNE, O ^{[1
]}

机构：

[1] SINTEF,N-7034 TRONDHEIM,NORWAY

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 134卷

关键词：

D O I：

10.1016/0921-5093(91)90959-Q

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A melt-spun AlMnCrSi alloy with icosahedral quasicrystalline (i-QC) particles in the aluminium (Al) matrix has been investigated. The microstructure has been studied by means of transmission electron microscopy (TEM). Three orientation relationships between the i-QC and Al have been found in this alloy. It is also found that the precipitates have strong coherency relations with the aluminium matrix. High-resolution micrographs show that the i-QC phase locally exhibits large deviations from the ideal icosahedral symmetry, and coherency strain at the interface is observed. Even though there are no generally accepted rules for the description of dislocations in such structures, the appearance of extra planes is sometimes apparent in the strain area.

引用

页码：1215 / 1219

页数：5

共 14 条

[1]

ANDERSEN SJ, 1990, THESIS NORWEGIAN I T, P30

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