| 热连轧过程复合微合金碳氮化物析出的定量计算 |
| |
| 引用本文： | 彭宁琦,唐广波,刘正东,雍岐龙.热连轧过程复合微合金碳氮化物析出的定量计算[J].材料热处理学报,2011,32(6). |
| |
| 作者姓名： | 彭宁琦 唐广波 刘正东 雍岐龙 |
| |
| 作者单位： | 钢铁研究总院结构材料研究所,北京,100081 |
| |
| 基金项目： | 国家“十一五”科技支撑计划资助项目(2006BAE03A08和2006BAE03A04) |
| |
| 摘 要： | 以微合金元素的析出热力学和析出动力学为基础,针对Fe-Nb-V-Ti-Al-C-N合金系,定量计算了热连轧过程中(Nb,V,Ti)(C,N)和AlN在奥氏体中的析出行为,并进一步分析了热轧制温度对析出行为的影响。计算结果表明,对所研究的钢种成分和工艺条件,在加热过程中(Nb,V,Ti)(C,N)就已经析出,在粗轧阶段,(Nb,V,Ti)(C,N)析出粒子平均半径逐渐减小,在精轧阶段,(Nb,V,Ti)(C,N)基本达到平衡析出量,终轧后析出粒子平均半径保持在23 nm左右。轧制时的热变形增大了形核率,促进了析出,使析出粒子的平均半径减小。随加热和轧制温度的降低,(Nb,V,Ti)(C,N)的析出量有所增加,粒子平均半径减小。
|
| 关 键 词： | 微合金钢 碳氮化物 析出 热力学 动力学 |
Quantitative calculation on precipitation behavior of complex microalloyed carbonitride during hot rolling |
| |
| PENG Ning-qi,TANG Guang-bo,LIU Zheng-dong,YONG Qi-long.Quantitative calculation on precipitation behavior of complex microalloyed carbonitride during hot rolling[J].Transactions of Materials and Heat Treatment,2011,32(6). |
| |
| Authors: | PENG Ning-qi TANG Guang-bo LIU Zheng-dong YONG Qi-long |
| |
| Affiliation: | PENG Ning-qi,TANG Guang-bo,LIU Zheng-dong,YONG Qi-long(Institute for Structural Materials,Central Iron and Steel Research Institute,Beijing 100081,China) |
| |
| Abstract: | Precipitation behavior of complex microalloyed carbonitride,(Nb,V,Ti)(C,N),and AlN in austenite in Fe-Nb-V-Ti-Al-C-N system during hot rolling were quantitatively calculated on the basis of precipitation thermodynamics and kinetics,and the influence of the hot deformation temperature on the precipitation behaviors was analyzed.The results indicate that the precipitation of(Nb,V,Ti)(C,N) has already started during reheating for the investigated steel composition and processing conditions.The mean radius of p... |
| |
| Keywords: | microalloyed steel carbonitride precipitation thermodynamics kinetics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
