Kinetic analysis of the isochronal crystallization of Ti40Zr25Ni8Cu9Be18 metallic glass

被引：16
|
作者：
Kou, H. C. [1 ]
Wang, J. [1 ]
Chang, H. [1 ]
Tang, B. [1 ]
Li, J. S. [1 ]
Hu, R. [1 ]
Zhou, L. [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2009年 / 355卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Amorphous metals; Metallic glasses; Crystallization; AMORPHOUS-ALLOYS; FORMING ABILITY; PHASE-CHANGE; BEHAVIOR; NANOCRYSTALLIZATION; MICROSTRUCTURE; NUCLEATION;
D O I：
10.1016/j.jnoncrysol.2009.01.001
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The isochronal crystallization kinetics of the Ti40Zr25Ni8Cu9Be18 metallic glass has been investigated by differential scanning calorimetry (DSC). Results indicate that the two crystallization events of this metallic glass cannot be well-described by the classic Johnson-Mehl-Avrami (JMA) kinetic equation. The kinetic equation considering the impingement effect has been found more applicable for describing the isochronal crystallization kinetics of this amorphous alloy. Accurate values of kinetic parameters were determined by fitting the theoretical DSC data to experimental curves. The kinetic parameters change in different crystallization stages and show strong heating rate dependence. Reasons of the deviation from the JMA kinetics for the isochronal crystallization of Ti40Zr25Ni8Cu9Be18 metallic glass were discussed. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：420 / 424
页数：5
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