摘要
在1450℃实验测得得，Fe－V－C和Fe－Nb－C系中碳的饱和溶解度，其计算式分别是：xc＝0．1980＋0．4152xv和xc＝0．1969＋0.8352xNb.1400～1600℃范围，Fe－C系计算式是：＝－5．0826＋8480×．通过热力学推导与计算，得到如下热力学数据：1）Fe－C系，lnγ°c＝－0．1339＝8.8551,＝0．1498；2）Fe－V－C系,＝－2.0970，＝－5.7737，＝－0.0247；3）Fe－Nb－C系，＝－4.2417.＝－11．6374，＝－0．0257．
The Solubility of Carbon in Fe- V-C and Fe- Nb-C Systems was measured at 1450 ℃ .The Solubility of Carbon Can be calculated respectively with the following formula:xc= 0. 198 0 + 0.415 2. xv and xc= 0.196 9 + 0.835 2· xNb.The in Fe - C systems at 1400 ~ 1600 ℃ can be calculated with the following formula; = - 5.082 6+ 848 0 × .The following thermodynamical data were obtained : 1) in Fe-C systems, = -0.133 9, = 8.855 1, = 0.149 8, 2) IN Fe- V-C systems, d= - 2.097 0, = - 5.773 7, = -0.0247,3) in Fe- Nb - C systems, = -4.241 7, = - 11 .637 4, = -0.025 7.
基金
冶金部基础研究资助
关键词
Fe-V(Nb)-C系
活度系数
活度
钒
炼钢
Fe-V(Nb)-C systems, Activity coefficients, Activity interaction coefficients
