Ni-Nb-Ta bulk metallic glasses designed by a cluster-plus-glue atom model

被引：6

作者：

Yuan, L. ^{[1
]}

Qiang, J. B. ^{[1
]}

Pang, C. ^{[1
]}

Wang, Q. ^{[1
]}

Wang, Y. M. ^{[1
]}

Dong, C. ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat, Dalian 116024, Peoples R China

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2011年 / 64卷 / 03期

基金：

美国国家科学基金会;

关键词：

metallic glasses; alloy design; eutectic; cluster-plus-glue-atom model; MECHANICAL-PROPERTIES; ALLOYS;

D O I：

10.1007/s12666-011-0059-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The formation of Ni-based ternary Ni-Nb-Ta bulk metallic glasses (BMGs) is explored in this work. Alloy compositions are designed by the cluster-plus-glue atom model based on a eutectic-related binary cluster Ni-Ni6Nb6, which is derived from the binary eutectic crystalline phase NiNb (Fe7W6 type). According to the cluster-plus-glue atom model, the well-known binary BMG-forming composition Ni62Nb38 can be described by a composition formula [Ni-Ni6Nb6]Ni-3 = Ni62.5Nb37.5. With an aim to further improve the glass-forming ability of the Ni-Nb alloy, Ta is selected as an alloying addition to partially replace Nb in the [Ni-Ni6Nb6]Ni-3 composition formula. The experimental results verified that BMGs with a critical size of 3 mm can be achieved at compositions [Ni-Ni6Nb6-xTax]Ni-3 (x = 0.9 similar to 1.1). Thermal and mechanical properties of the obtained BMG alloys are also investigated.

引用

页码：293 / 295

页数：3

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