A NEW COMMENSURATE PHASE AND ITS RELATED INCOMMENSURATE PHASE IN AL-CU-FE ALLOY

被引：9

作者：

CHENG, YF ^{[1
]}

HUI, MJ ^{[1
]}

LI, FH ^{[1
]}

机构：

[1] CHINESE ACAD SCI,BEIJING LAB ELECTRON MICROSCOPY,BEIJING 100080,PEOPLES R CHINA

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1991年 / 63卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1080/09500839108206600

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new tetragonal phase with lattice parameters a = 9.07 angstrom and c = 21.9 angstrom has been discovered by electron diffraction. The space group determined by combining conventional and convergent beam electron diffraction is 14/mmm. The approximate composition obtained from X-ray dispersive analysis is Al80Cu5Fe15. It coexists with an incommensurate composite phase which consists of two subcells. The sublattice parameters are a1 = a, c1 almost-equal-to 1/7c = 3.14 angstrom and a2 = a1/square-root 2, c2 = 3.71 angstrom. The structural and compositional relationships between the incommensurate phase and the commensurate phase are discussed.

引用

页码：49 / 55

页数：7

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