Glass formation and phase separation in the Ag-Cu-Zr system

被引：50

作者：

Kundig, A. A.

Ohnuma, M.

Ohkubo, T.

Abe, T.

Hono, K.

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Natl Inst Mat Sci, Int Ctr Young Scientists, Tsukuba, Ibaraki 3050044, Japan

来源：

SCRIPTA MATERIALIA | 2006年 / 55卷 / 05期

关键词：

metallic glasses; phase separation; EF-TEM; HREM;

D O I：

10.1016/j.scriptamat.2006.05.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Glass formation and phase separation in Ag-Cu-Zr alloys have been investigated by energy-filtered transmission electron microscopy to discuss the possibility of phase separation in bulk metallic glasses. The experimentally determined glass forming composition range overlaps marginally with the calculated miscibility gap. As-quenched amorphous Ag20Cu48Zr32 alloy shows a composition contrast in a fully amorphous structure. Subsequently crystallized microstructure shows a good size correlation with the prior compositional fluctuations, indicating preferred nucleation in one of the phase-separated regions. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：449 / 452

页数：4

共 22 条

[1] Thermodynamic modeling of the undercooled liquid in the Cu-Zr system [J].