Superior glass-forming ability of CuZr alloys from minor additions

被引：0

作者：

Yu P. ^{[1
]}

Bai H.Y. ^{[1
]}

Wang W.H. ^{[1
]}

机构：

[1] Institute of Physics, Chinese Academy of Sciences

来源：

J Mater Res | 2006年 / 7卷 / 1674-1679期

基金：

美国国家科学基金会;

关键词：

Alloys;

D O I：

10.1557/jmr.2006.0212

中图分类号：

学科分类号：

摘要：

We report a novel phenomenon in which minor element additions (∼ at.%) can dramatically enhance the glass-forming ability (GFA) of CuZr(Al) metallic alloy, which can be cast into glasses with large cross-section sizes using a conventional casting method. The minor additions cause the liquidus temperature T1 to decrease from 1219 (for Cu50Zr50) to 1139 K [for (Cu50Zr50)92Al7 Gd1], and the reduced glass transition temperature Trg (= Tg/Tl) of the alloys increases from 0.550 (for Cu50 Zr50) to 0.613 [for (Cu50Zr50)92Al7 Gd1]. The mechanism involved in the achievement of the superior GFA is explained by the stronger tendency of short-range ordering in the stronger microalloyed alloys as well as the thermodynamic and kinetic aspects. © 2006 Materials Research Society.

引用

页码：1674 / 1679

页数：5

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