Effects of Temperature on Crystallization Behavior of Bulk Cu50Zr42Al8 Amorphous Alloy

Kou Shengzhong1; Tu Peng1; Bian Hongxia3; Zhao Jipeng1; Gao Mangmang1; Zhang Ling1

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Effects of Temperature on Crystallization Behavior of Bulk Cu₅₀Zr₄₂Al₈ Amorphous Alloy
Issue 6, Pages: 420-421(2008)
Published： 2008 ，
DOI：

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[1]寇生中,屠鹏,边红霞,赵吉鹏,高忙忙,张玲.Cu_(50)Zr_(42)Al_8块状非晶合金的变温晶化行为研究[J].特种铸造及有色合金,2008(06):420-421+405.

Kou Shengzhong1, Tu Peng1, Bian Hongxia3, et al. Effects of Temperature on Crystallization Behavior of Bulk Cu₅₀Zr₄₂Al₈ Amorphous Alloy. [J]. Special Casting & Nonferrous Alloys (6):420-421(2008)
[1]寇生中,屠鹏,边红霞,赵吉鹏,高忙忙,张玲.Cu_(50)Zr_(42)Al_8块状非晶合金的变温晶化行为研究[J].特种铸造及有色合金,2008(06):420-421+405. DOI：

Kou Shengzhong1, Tu Peng1, Bian Hongxia3, et al. Effects of Temperature on Crystallization Behavior of Bulk Cu₅₀Zr₄₂Al₈ Amorphous Alloy. [J]. Special Casting & Nonferrous Alloys (6):420-421(2008) DOI：

摘要

研究了Cu50Zr42Al8大块非晶合金在连续升温过程中的晶化行为。结果表明

随升温速度的加快

玻璃转变温度Tg、晶化起始温度Tx、晶化峰值温度Tp都向高温区移动

过冷温度区△Tx扩大;运用Kissinger法分别计算出玻璃转变激活能Eg为417.19kJ/mol、晶化起始激活能Ex为332.18kJ/mol、晶化峰的激活能Ep为327.70kJ/mol;并运用FWO法计算晶化阶段激活能Ex

随晶化量的增大

阶段激活能呈逐渐减小的趋势

且在最初的阶段（晶化量小于5%）

激活能迅速减小。分析表明

Cu50Zr42Al8块体非晶合金具有良好的热稳定性。

Abstract

Crystallization behavior of bulk Cu50Zr42Al8 amorphous alloy during continuous temperature-increment was described.The results indicate that with increasing in the temperature

the glass transformation temperature（Tg）

crystallization temperature（Tx）and crystallization peak temperature（Tp）tend towards high temperature zone

and under-cooled temperature zone △Tx is enlarged.The glass transformation activation energy Eg

crystallization initial activation energy Ex and crystallization peak activation energy Ep are calculated by the Kissinger formula which is 417.19 kJ/mol

332.18 kJ/mol and 327.70 kJ/mol

respectively.In addition

crystallization activation energy Ex is calculated by the FWO equation.It is found that the crystallization activation energy is decreased with the increase of crystallization degree

in which the activation energy is sharply declined with the crystallization degree lower than 5%.The Cu50Zr42Al8 bulk amorphous alloy exhibits desirable thermal stability.