Zr-(Cu,Ag)-Al bulk metallic glasses
Zr-(Cu,Ag)-Al bulk metallic glasses
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Zr-(Cu,Ag)-Al块体金属玻璃
DOI：
10.1016/j.actamat.2007.12.030
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发表时间：
2008-05-01
期刊：
影响因子：
9.4
通讯作者：
Jiang, J. Z.
中科院分区：
文献类型：
--
作者：
Jiang, Q. K.;Wang, X. D.;Jiang, J. Z.
在本文中，我们报告了一系列的Zr-（Cu，Ag）-Al块体金属玻璃（BMG）的形成与直径至少为20毫米，并演示了约25克的非晶金属锭的形成在一个广泛的Zr-（Cu，Ag）-Al成分范围内使用传统的电弧熔炼机。本文从结构、热力学和动力学角度探讨了Zr-（Cu，Ag）-Al合金系高非晶形成能力的成因。Zr-（Cu，Ag）-Al体系的高GFA归因于较致密的局部原子堆积和非晶相与晶相之间较小的吉布斯自由能差。还介绍了新研制的Zr（Cu，Ag）-Al非晶合金的热性能、力学性能、腐蚀性能和弹性常数。这些新开发的无镍Zr-（Cu，Ag）-Al非晶合金与其他非晶合金相比，具有高的玻璃纤维形成率、高的强度、高的压缩塑性、廉价无毒的原材料和良好的生物相容性等综合性能，具有潜在的工业应用前景。(c)2007 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
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.