(Cu₅₀Zr₄₂Al₈)₉₆Y₄块状非晶的变温晶化行为

来源期刊：有色金属2011年第2期

论文作者：屠鹏 寇生中

文章页码：50 - 53

关键词：Cu基非晶； Y元素； 激活能

Key words：Cu based-amorphous alloy； Y element； activation energy

摘    要：研究(Cu₅₀Zr₄₂Al₈)₉₆Y₄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T_g、晶化起始温度T_x、晶化峰值温度T_p都向高温区移动,过冷温度区△T_x扩大到了72.5K。运用Kissinger法分别计算出玻璃转变激活能E_g为512.34kJ/mol、晶化起始激活能E_x为372.44kJ/mol、晶化峰的激活能E_p1和E_p1为404.52kJ/mol、404.75kJ/mol。运用FWO法计算出了晶化阶段激活能Ex,发现当晶化量小于50(时,随晶化量的增大,阶段激活能变化不大;当晶化量大于50(时,随晶化量的增大,阶段激活能呈逐渐减小的趋势。

Abstract: Crystallization behavior of bulk (Cu₅₀Zr₄₂Al₈)₉₆Y₄ amorphous alloy during continuous temperature increment was described.With increasing of the temperature,The results indicate that the glass transformation temperature (T_g),crystallization initial temperature (T_x) and crystallization peak temperature (T_p) tend to high temperature zone,and under-cooled temperature zone △T_x is enlarged to 72.5K.The glass transformation activation energy Eg,crystallization initial activation energy E_x and crystallization peak activation energy E_p are calculated by the Kissinger formula which is 512.34 kJ/mol,372.44 kJ/mol,404.52 kJ/mol and 404.75 kJ/mol respectively.In addition,crystallization phase activation energy E_x is calculated by the FWO equation.The research found that there is no notable change in the crystallization phase activation energy is increased with the increasing of crystallization degree when crystallization degree is lower than 50%;on the contrary,when crystallization degree is higher than 50%,the crystallization phase activation energy is decreased with the increasing of crystallization degree.