Fe-C-Ta三元系相关系的实验测定与热力学计算
发布时间：2018-07-29 06:50
【摘要】：采用差热分析(DTA)测定了Fe-C-Ta三元系中Fe-XC-0.1Ta和Fe-XC-0.5Ta 2个垂直截面,并选取Fe-2.93C-0.1Ta和Fe-2.31C-0.5Ta 2种合金,对其相变过程进行了分析。利用CALPHAD方法,并结合实验数据对该体系的相关系进行了热力学优化。结果表明,计算结果与实验结果符合较好。该体系富铁角的液相面投影存在4个四相恒温反应:Liquid+bcc?fcc+Ta C,Liquid?bcc+Fe_2Ta+Ta C,Liquid?Fe_3C+Ta C+fcc,Liquid+Ta_2C?Ta C+Fe_2Ta,反应温度分别为1443.26、1413.90、1122.42及1508.64℃。Fe-XC-0.1Ta合金和Fe-XC-0.5Ta合金在726.6℃发生共析反应。
[Abstract]:Two vertical sections of Fe-XC-0.1Ta and Fe-XC-0.5Ta in Fe-C-Ta ternary system were measured by differential thermal analysis (DTA). Two kinds of alloys, Fe-2.93C-0.1Ta and Fe-2.31C-0.5Ta, were selected to analyze the phase transformation process. The phase relationship of the system was optimized by CALPHAD method and experimental data. The results show that the calculated results are in good agreement with the experimental results. There are four phase isothermal reactions in the liquid surface projection of iron rich angle in this system: 1: liquid bcc?fcc Ta / C liquid / BCC / Ta / C / C / C / C / T / C / C / C\% C\%\
【作者单位】： 湘潭大学材料设计及制备技术湖南省重点实验室;
【基金】：国家自然科学基金(51471141)
【分类号】：TG142.1
[Abstract]:Two vertical sections of Fe-XC-0.1Ta and Fe-XC-0.5Ta in Fe-C-Ta ternary system were measured by differential thermal analysis (DTA). Two kinds of alloys, Fe-2.93C-0.1Ta and Fe-2.31C-0.5Ta, were selected to analyze the phase transformation process. The phase relationship of the system was optimized by CALPHAD method and experimental data. The results show that the calculated results are in good agreement with the experimental results. There are four phase isothermal reactions in the liquid surface projection of iron rich angle in this system: 1: liquid bcc?fcc Ta / C liquid / BCC / Ta / C / C / C / C / T / C / C / C\% C\%\
【作者单位】： 湘潭大学材料设计及制备技术湖南省重点实验室;
【基金】：国家自然科学基金(51471141)
【分类号】：TG142.1
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