Ab initio determination of atomic structure of Zn-Zr precipitates in a Mg-Nd-Zn-Zr alloy

被引：4

作者：

Wang, W. Z. ^{[1
,2
]}

Zhou, X. Z. ^{[2
]}

Yang, Z. Q. ^{[2
]}

Qi, Y. ^{[1
]}

Ye, H. Q. ^{[2
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS | 2019年 / 75卷

关键词：

crystal structure; Zn-Zr precipitate; electron diffraction; scanning-transmission electron microscopy; electron crystallography; CRYSTAL-STRUCTURE; RESOLUTION; PHASE;

D O I：

10.1107/S2052520619010229

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The atomic structure of nanometre-sized Zn-Zr precipitates in a Mg alloy is determined by combining tilt series of micro-beam electron diffraction with atomic resolution Z-contrast imaging. The stoichiometry of the Zn-Zr precipitates is Zn2Zr3 with a primitive tetragonal structure (space group P4(2)/mnm, a = b = 0.761 nm, c = 0.682 nm). There are 20 atoms in the unit cell of tetragonal Zn2Zr3, comprising 12 Zr atoms at the 4d, 4f, 4g positions and eight Zn atoms at the 8j positions.

引用

页码：564 / 569

页数：6

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