Hexagonal superstructures in the Zn-Mg-rare-earth alloys

E. Abe; H. Takakura; A. Singh; A. P. Tsai

doi:10.1016/S0925-8388(98)00814-7

Hexagonal superstructures in the Zn-Mg-rare-earth alloys

E. Abe, H. Takakura, A. Singh, A. P. Tsai

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

We show that three types of hexagonal Zn-Mg-rare-earth (RE) ternary compound are formed in the vicinity of Zn₆Mg₃RE₁. An electron diffraction study revealed that these phases are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A preliminary structural model for the phase with medium a parameter has been proposed by high-resolution electron microscopy, based on the structures of the other two phases recently determined. It is shown that the two-dimensional hexagonal superstructures can be described by two kinds of Zn-Mg clusters A and B, linked by RE atoms.

Original language	English
Pages (from-to)	169-172
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	283
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(98)00814-7
Publication status	Published - 1999 Jan 1
Externally published	Yes

Keywords

Atomic cluster
HREM
Intermetallic phases
Superstructure
Zn-Mg-rare-earth alloys

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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abstract = "We show that three types of hexagonal Zn-Mg-rare-earth (RE) ternary compound are formed in the vicinity of Zn6Mg3RE1. An electron diffraction study revealed that these phases are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A preliminary structural model for the phase with medium a parameter has been proposed by high-resolution electron microscopy, based on the structures of the other two phases recently determined. It is shown that the two-dimensional hexagonal superstructures can be described by two kinds of Zn-Mg clusters A and B, linked by RE atoms.",

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T1 - Hexagonal superstructures in the Zn-Mg-rare-earth alloys

AU - Abe, E.

AU - Takakura, H.

AU - Singh, A.

AU - Tsai, A. P.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We show that three types of hexagonal Zn-Mg-rare-earth (RE) ternary compound are formed in the vicinity of Zn6Mg3RE1. An electron diffraction study revealed that these phases are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A preliminary structural model for the phase with medium a parameter has been proposed by high-resolution electron microscopy, based on the structures of the other two phases recently determined. It is shown that the two-dimensional hexagonal superstructures can be described by two kinds of Zn-Mg clusters A and B, linked by RE atoms.

AB - We show that three types of hexagonal Zn-Mg-rare-earth (RE) ternary compound are formed in the vicinity of Zn6Mg3RE1. An electron diffraction study revealed that these phases are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A preliminary structural model for the phase with medium a parameter has been proposed by high-resolution electron microscopy, based on the structures of the other two phases recently determined. It is shown that the two-dimensional hexagonal superstructures can be described by two kinds of Zn-Mg clusters A and B, linked by RE atoms.

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KW - HREM

KW - Intermetallic phases

KW - Superstructure

KW - Zn-Mg-rare-earth alloys

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