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

页码：390 / 393

页数：4

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