Improvement of the thermal stability of Gd-Dy-Al-Co bulk metallic glass by the addition of high bulk modulus elements

被引：8

作者：

Liang, L. ^{[1
]}

Hui, X. ^{[1
]}

Yue, Y. L. ^{[1
]}

Chen, G. L. ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 6-7期

基金：

中国国家自然科学基金;

关键词：

bulk metallic glass; casting; thermal stability; bulk modulus;

D O I：

10.1016/j.matlet.2007.07.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of new heavy rare-earth based bulk metallic glasses with high thermal stability have been obtained by a copper mold casting method. Compared with the light rare-earth based bulk metallic glasses, these alloys have much higher glass transition temperature, crystallization temperature, and larger effective activation energy for glass transition and crystallization. It was found that the addition of high bulk modulus element Ge can further enhance the thermal stability of these alloys. These results confirm that the thermal stability is closely correlated with the bulk modulus of rare-earth based bulk metallic glasses, which is useful for guiding the composition design of the BMG alloys with high thermal stability. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：994 / 997

页数：4

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