Zr-(Cu,Ag)-Al bulk metallic glasses

被引：252
作者：
Jiang, Q. K. [1 ,2 ]
Wang, X. D. [1 ,2 ]
Nie, X. P. [1 ,2 ]
Zhang, G. Q. [3 ]
Ma, H. [4 ]
Fecht, H. -J. [4 ,5 ]
Bednarcik, J. [6 ]
Franz, H. [6 ]
Liu, Y. G. [7 ]
Cao, Q. P. [1 ,2 ]
Jiang, J. Z. [1 ,2 ]
机构：
[1] Zhejiang Univ, ICNMS, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Lab New Struct Mat, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
[3] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Manufacturing Technol, Hangzhou 310018, Peoples R China
[4] Univ Ulm, Fac Engn, Dept Mat, D-89081 Ulm, Germany
[5] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[6] HASYLAB, DESY, D-22603 Hamburg, Germany
[7] Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China
来源：
ACTA MATERIALIA | 2008年 / 56卷 / 08期
基金：
中国国家自然科学基金;
关键词：
glass-forming ability; bulk metallic glass; thermodynamics; structure;
D O I：
10.1016/j.actamat.2007.12.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we report the formation of a series Zr-(Cu,Ag)-Al bulk metallic glasses (BMGs) with diameters at least 20 mm and demonstrate the formation of about 25 g amorphous metallic ingots in a wide Zr-(Cu,Ag)-Al composition range using a conventional arc-melting machine. The origin of high glass-forming ability (GFA) of the Zr-(Cu,Ag)-Al alloy system has been investigated from the structural, thermodynamic and kinetic points of view. The high GFA of the Zr-(Cu,Ag)-Al system is attributed to denser local atomic packing and the smaller difference in Gibbs free energy between amorphous and crystalline phases. The thermal, mechanical and corrosion properties, as well as elastic constants for the newly developed Zr (Cu,Ag)-Al BMGs, are also presented. These newly developed Ni-free Zr-(Cu,Ag)-Al BMGs exhibit excellent combined properties: strong GFA, high strength, high compressive plasticity, cheap and non-toxic raw materials and biocompatible property, as compared with other BMGs, leading to their potential industrial applications. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1785 / 1796
页数：12
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