Statistical composition-structure-property correlation and glass-forming ability based on the full icosahedra in Cu-Zr metallic glasses

被引：81

作者：

Sha, Z. D. ^{[1
]}

Feng, Y. P. ^{[1
]}

Li, Y. ^{[2
]}

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 06期

关键词：

copper alloys; correlation methods; glass structure; metallic glasses; molecular dynamics method; statistical analysis; vitrification; zirconium alloys; ATOMIC PACKING; ORDER;

D O I：

10.1063/1.3310278

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using the large-scale atomic/molecular massively parallel simulator, fraction of the Cu-centered << 0,0,12,0 >> full icosahedra (f(ico)) is obtained from a statistical analysis over a broad compositional range with high resolution in the Cu-Zr binary system. Weak but significant peaks are observed at certain compositions which coincide with good glass formers. This correlation implies that the change in f(ico) is a fundamental structural factor in determining the ease of glass formation. In this regard, f(ico) can be an indicator of glass-forming ability. Our work provides further understanding on the atomic structure of the Cu-Zr system and its effect on glass formation.

引用

页数：3