Crystallisation behaviour of CU60Zr30Ti10, bulk glassy alloy

被引：16
|
作者：
Kasai, M
Matsubara, E
Saida, J
Nakayama, M
Uematsu, K
Zhang, T
Inoue, A
机构：
[1] Japan Sci & Technol Corp, Inoue Superliquid Glass Project, Sendai, Miyagi 9820807, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, Grad Sch, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 375卷
关键词：
metallic glasses; X-ray diffraction (XRD); phase transformation; Cu-based alloy;
D O I：
10.1016/j.msea.2003.10.092
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The crystallisation behaviour in the Cu60Zr30Ti10 alloy was studied. The as-quenched Cu60Zr30Ti10 alloy consists of homogeneously dispersed nanocrystals in the glassy matrix. Two metastable crystalline phases appear prior to the precipitation of equilibrium phases, which correspond to the three exothermic peaks in the DSC curve. After the first exothermic reaction, the nanometer-sized CuZr phase is precipitated in the glassy matrix. In the second exothermic peak, the CuZr phase transforms to a metastable cubic phase with a large lattice parameter of 1.265 nm. Finally, this metastable phase is decomposed to Cu10Zr7, Cu8Zr3 and Cu3Ti2 equilibrium phases. The Cu10Zr7 and Cu8Zr3 phases contain Ti while the Cu3Ti2 phase contains Zr. (C) 2003 Published by Elsevier B.V.
引用
收藏
页码：744 / 748
页数：5
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