摘要
在规则溶液模型的基础上，利用过剩自由能与活度系数之间的关系，计算了ＴｉＡｌ二元系熔体中钛、铝的活度系数。结果表明，钛铝合金熔体中，钛、铝的活度系数都小于１。２０００Ｋ时，ＴｉＡｌ基合金成分即ＴｉＸ（Ａｌ）为４８％合金熔体中，钛的活度系数只有００６左右，说明钛铝合金熔体的反应性已远低于纯钛熔体的反应性。
Abstract Based on regular solution model,the activity coefficients of Ti and Al in TiAl system melt were calculated using the relation between the excess free energy and activity coefficient.The results showed that all the activity coefficients of Ti and Al in TiAl system melt are less than 1.At 2000K,the activity coefficient of Ti in Ti 48%Al melt is only 0 06,it indicated that the reactivity between TiAl melt and refractory is far lower than that between pure Ti and refractory.
出处
《铸造》
EI
CAS
CSCD
北大核心
1998年第1期17-20,共4页
Foundry
