Bulk metallic glasses formed by alloying the Cu6Zr5 cluster

被引：2

作者：

Li, Yanhui

Wang, Qing

Wu, Jiang

Qiang, Jianbing

Dong, Chuang ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Mat Modificat, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

来源：

JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING | 2007年 / 14卷 / SUPPL. 1期

基金：

中国国家自然科学基金;

关键词：

bulk metallic glasses; cluster; electron concentration; atomic size; minor-alloying; Cu-Zr alloys;

D O I：

10.1016/S1005-8850(07)60105-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The bulk metallic glass formation in the Cu-Zr-M ternary systems by alloying of a binary basic Cu6Zr5 cluster was investigated, where M stands for Sn, Mo, Ta, Nb, Ag, Al and Ti. The Cu6Zr5 cluster is a capped Archimedean antiprism that characterizes the local structure of the Cu10Zr7 crystalline phase. This cluster composition almost superposes with Cu-Zr eutectic Cu0.56Zr0.44. A series of alloys along the cluster line (Cu6Zr5)(1-x)M-x were examined for their glass forming abilities. Alloy rods with a diameter of 3 mm were prepared by copper mould suction casting method and analyzed by XRD and thermal analysis. The Cu-Zr based bulk metallic glasses were discovered with minor Nb, Sn, Mo, Ta additions (<= 2at%) and Al, Ti, Ag (8at%<= concentration <= 9at%). The alloying mechanism was discussed in the light of atomic size, cluster-linking structure and electron concentration factors.

引用

页码：39 / 42

页数：4

共 19 条

[1] CRYSTALLIZATION CHARACTERISTICS OF CU-ZR METALLIC GLASSES FROM CU70ZR30 TO CU25ZR75 [J].