Cu-based bulk amorphous alloy with larger glass-forming ability and supercooled liquid region

被引：24
|
作者：
Fu, H. M. [1 ,2 ]
Zhang, H. F. [2 ]
Wang, H. [3 ]
Hu, Z. Q. [2 ]
机构：
[1] Univ Queensland, Sch Engn, St Lucia, Qld 4072, Australia
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[3] Univ So Queensland, Fac Engn & Surveying, Toowoomba, Qld 4350, Australia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 458卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
glass-forming ability; bulk metallic glass; supercooled liquid region;
D O I：
10.1016/j.jallcom.2007.03.114
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：
The glassy rod with a maximum sample thickness of I I mm and larger supercooled liquid region of 108 K was successfully fabricated when substituting Cu with minor amount of Ag in the Cu-Zr-Al-Gd alloy system. The value of gamma reaches a maximum of 0.418 for the Cu45.5Zr45Al7Gd2Ag0.5 bulk metallic glass (BMG) alloy. The high glass-forming ability (GFA) and larger supercooled liquid region are discussed from atomic size, negative mixing heat among constituent elements and thermodynamics. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：390 / 393
页数：4
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