Electronegativity difference as a factor for evaluating the thermal stability of Al-rich metallic glasses

被引：24
|
作者：
Ma, C. S. [1 ]
Zhang, J. [1 ]
Chang, X. C. [1 ]
Hou, W. L. [1 ]
Wang, J. Q. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2008年 / 88卷 / 12期
基金：
中国国家自然科学基金;
关键词：
electronegativity; crystallization; metallic glasses;
D O I：
10.1080/09500830802526596
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This article proposes a factor, the critical electronegativity difference xcri, to correlate alloy composition with thermal stability and glass-forming ability of Al-Ni-RE (RE: Rare Earth element) ternary metallic glasses. The Al-rich metallic glasses with x xcri exhibit glassy behavior, whereas alloys with x xcri are nanocrystalline. Nanoglassy alloys occur when x xcri. The best glass formers are located near xcri. Furthermore, an equation has been deduced to calculate xcri with varying RE covalent atomic radius.
引用
收藏
页码：917 / 924
页数：8
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