Structural variation and phase transformations of decagonal quasicrystals in the Al-Ni-Co system

被引：66

作者：

Tsai, AP ^{[1
]}

Fujiwara, A ^{[1
]}

Inoue, A ^{[1
]}

Masumoto, T ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 98077,JAPAN

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1996年 / 74卷 / 04期

关键词：

D O I：

10.1080/095008396180164

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A variation in the structure of the decagonal phase with composition and phase transformations related to the decagonal phase have been observed in Al70Ni30-xCox alloys with x varying from 16 to 24. A decagonal phase with fundamental reflections at Al70Ni24Co6 converts to a (type I) superstructure around Al70Ni18Co12 and to another type (II) of superstructure at Al70Ni14CO16. An order-disorder transformation in the type-I superstructure of the decagonal quasicrystal has been observed in alloys with x varying from 12 to 15 in the temperature range from 973 to 1073 K. The other transformation from a mixture of a decagonal phase and a cubic Al(Ni, Co) phase to crystalline phases has been identified in the alloys with x varying from 18 to 20 in the temperature range between 1273 and 1073 K. Both transformations are reversible.

引用

页码：233 / 240

页数：8

共 12 条

[1] QUASICRYSTAL WITH ONE-DIMENSIONAL TRANSLATIONAL SYMMETRY AND A TENFOLD ROTATION AXIS [J].