Effects of bond parameters on the widths of supercooled liquid regions of ferrous BMGs

被引：25

作者：

Fang, SS ^{[1
]}

Xiao, XS ^{[1
]}

Xia, L ^{[1
]}

Wang, Q ^{[1
]}

Li, WH ^{[1
]}

Dong, YD ^{[1
]}

机构：

[1] Shanghai Univ, Inst Mat Sci, Shanghai 200072, Peoples R China

来源：

INTERMETALLICS | 2004年 / 12卷 / 10-11期

关键词：

alloy design; glasses; metallic; thermal stability;

D O I：

10.1016/j.intermet.2004.04.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Correlation is investigated between supercooled liquid regions (SLRs) DeltaT(x) (= T-x - T-g, where T-x is the onset crystallization temperature and T-g the glass transition temperature) of ferrous bulk metallic glasses (BMGs) and three bond parameters, i.e. electronegativity, atomic size and valent electron. From the available experimental data in literatures, DeltaT(x) has strong correlation with the bond parameters. A semi-empirical equation is established to elucidate the correlation between DeltaT(x) and the three bond parameters. In detail, DeltaT(x) increases obviously with the increase of the atomic size parameter (delta), and electronegativity difference (Deltax) and the electron concentration. An ellipse arc with thickness derived from the equation is drawn to determine the range of BMG with large SLR. (C) 2004 Published by Elsevier Ltd.

引用

页码：1069 / 1072

页数：4

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