摘要
通过实验观察及热力学计算，研究了CSP低碳微Ti钢中的Ti(C，N)析出．实验观察到大量15～30nm的Ti(C，N)第二相粒子，它们在铸坯均热保温和前两道次的热轧中析出并长大充分；均热前CSP铸坯中只有很少量尺寸约大于50nm的TiN粒子析出，铸坯中观察不到微米级的大块TiN夹杂．研究结果表明，CSP工艺下粒子析出行为同传统工艺相比发生了变化，所以微量Ti在钢中的作用也有很大不同．
The precipitation behavior of Ti（C,N） particles in CSP low carbon steel with Ti addition was studied by experimental observation and thermodynamic calculation. Large amount of fine Ti（C,N） particles with 15-30 nm in size were observed, which were precipitated and grew up during the soaking and in the first two hot rolling process. There were only a few TiN particles of more than 50 nm in size precipitated in the slabs before soaking, and no TiN inclusions larger than 1 μm were observed. The results show that the precipitation behavior in the steel produced by the CSP technology is different from that in the conventional one. The effects of small amount of Ti addition on the properties of steels are also different.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2005年第6期679-683,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金(No.50371009)
关键词
CSP
析出
奥氏体再结晶
晶粒细化
CSP
precipitation
austenite recrystallization
grain refinement
