摘要
利用非等温差示扫描量热(DSC)分析方法研究了大块 Zr41Ti14Cu12.5Ni2Be22.5Fe8非晶合金中的晶化行为,用 Kissinger方程计算其晶化表观激活能.实验表明,在 Zr基大块非晶合金中掺入 Fe后,其玻璃转变与晶化行为都与加热速率有关,均具有动力学效应.同时,从晶化反应速率常数的角度讨论了非晶形成能力.
Differential scanning calorimeter (DSC) was used to investigate apparent activation energy of crystallization of Zr-Ti-Cu-Ni-Be-Fe bulk metallic glass (BMG) by Kissinger equation under non-isothermal condition. The glass transition temperature, T-g, the onset crystallization temperature, T-x, and the crystallization peak temperature, T-pi, of the BMG are found to depend on the heating rate during the continuous heating, suggesting that both glass transition and crystallization have a significant kinetic effect.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第7期754-758,共5页
Acta Metallurgica Sinica
基金
香港研究资助局资助项目 City U 1008/99E
关键词
大块非晶合金
晶化
动力学效应
bulk amorphous alloy
crystallization
kinetic effect