Different cooling rate dependences of different microstructure units in aluminium glass by molecular dynamics simulation

被引：16

作者：

Liu, CS ^{[1
]}

Zhu, ZG ^{[1
]}

Xia, JC ^{[1
]}

Sun, DY ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Lab Internal Frict & Defects Solids, Hefei 230031, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2000年 / 17卷 / 01期

关键词：

D O I：

10.1088/0256-307X/17/1/012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Constant-pressure molecular dynamics simulation and the pari analysis technique have been performed to study the microstructural evolution of aluminum during rapid solidification. The microstructure characteristics of icosahedral ordering increase with decrease of the cooling rate, whereas the microstructure unit characteristics of hcp crystalline structure decrease. There are two kinds of microstructure units which are similar to those in the fcc crystal containing interstitialcies. These two kinds of microscopic units are nearly independent of the cooling rate. The microscopic structural unit characteristics of fcc crystalline structure do not depend on the cooling rate either. These results may help us understand the microstructure of glass and its stability.

引用

页码：34 / 36

页数：3

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