摘要
利用Thermo-calc热力学软件TCFE3数据库研究Nb-Ti、V-Ti、Nb-V-Ti低碳微合金钢中析出物的析出开始温度、给定温度的奥氏体成分,计算得到Nb-Ti低碳微合金钢中Nb、Ti碳氮化物的开始形成温度分别为1090和1400℃,最大摩尔分数分别为7.1×10-4、2.4×10-4,V-Ti低碳微合金钢中V、Ti碳氮化物的开始形成温度分别为800和1395℃,最大摩尔分数为2.1×10-3,1.5×10-4,Nb-V-Ti低碳微合金钢中Nb-V碳氮化物和Ti碳氮化物的开始形成温度分别为1070和1390℃,其碳氮化物最大摩尔分数分别为1.2×10-3、1.8×10-4。热力学软件的计算结果与有关文献的实验数据有较好的一致性。
Thermo-calc software with TCFE3 data base was used to study the starting- precipitation temperature and the austenite composition at given temperature in low carbon micro-alloyed steels. The calculation results show that the starting-precipitation temperature of the precipitation of niobium carbonitride and titanium carbonitride is 1090 ℃and 1400℃, the maximum mole fraction of them is 7.1×10^-4 and 2.4×10^-4, respectively in Nb-Ti micro-alloyed steel. In V-Ti microalloyed steel, the starting-precipitation temperature of vanadium carbonitride and titanium carbonitride is 800 ℃ and 1395 ℃, the maximum mole fraction of them is 2.1 ×10^ -3 and 1.5 ×10 ^-4, respectively. In Nb-V-Ti micro-alloyed steel, the starting-precipitation temperature of niobium-vanadium carbonitride and titanium carbonitride is 1070 ℃and 1390 ℃, and their maximum mole fractions is 1.2 ×10^-3 and 1.8×10^-4 respectively. The calculation results of Thermo-calc software are agreeable with the experiment data available from publications.
出处
《热加工工艺》
CSCD
北大核心
2010年第8期1-4,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(50901022
50334010)
贵州省优秀科技人才省长专项基金资助项目(200815)
作者简介
向嵩(1979-),男,贵州人,副教授,博士,主要从事材料优化与设计研究:电话:0851—8115910;E-mail:xiangs221@163.com
通讯作者:刘国权(1952-),男,山东人,教授,博导,博士,主要从事材料优化与设计研究:电话:010—62334314;E—mail:G.liu@ustb.edu.cn