Atomic Structure of Cu49Hf42Al9 Metallic Glass with High Glass-Forming Ability and Plasticity

被引：3

作者：

Li, Kai ^{[1
,2
,3
]}

Chou, Yu-Jen ^{[4
]}

Gao, Fang-Liang ^{[1
,2
,3
]}

Li, Guo-Qiang ^{[1
,2
,3
]}

机构：

[1] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[2] South China Univ Technol, Engn Res Ctr Solid State Lighting & Its Informat, Guangzhou 510640, Guangdong, Peoples R China

[3] South China Univ Technol, Sch Mat Sci & Engn, Dept Elect Mat, Guangzhou 510640, Guangdong, Peoples R China

[4] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2019年 / 32卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Metallic glass; Radial distribution function; Electron diffraction; Density functional theory; Atomic structure; INITIO MOLECULAR-DYNAMICS; MEDIUM-RANGE; CU; LIQUID; TRANSITION; FLOW;

D O I：

10.1007/s40195-019-00907-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Electron diffraction was used to study the local atomic structure of Cu49Hf42Al9 metallic glasses (MGs). The amorphous nature of the MG was fully retained after the compression test. The partial radial distribution functions (PRDFs) of the MG structure obtained from the atomic model using reverse Monte Carlo and density functional theory optimization display that the peaks of the first nearest-neighbour distances for Cu-Cu, Hf-Cu and Hf-Hf atomic pairs were located at 2.56, 2.78 and 3.23, respectively. The wide distribution of PRDF for Hf-Hf atomic pair explained the high plasticity of the material.

引用

页码：803 / 807

页数：5

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