不同退火工艺下Ti_IF钢二相料演变的比较.pdf

7 3 Vol. 7 No.3 1999 9 MATERIAL SCIENCE TECHNOLOGY Sep. 1999 : 1999) TiIF 1 2 2 王作成, 石 京, 王先进 ( 1. 山东工业大学材料科学与工程学院锻压教研室, 济南250061; 2. 北京科技大学材料科学与工 程学院压力加工系, 山东 100083) : Ti IF , : ,TiNTiS Ti (CS) , 4 2 , TiC ;Ti IF , FeTiP (Ti, Mn) S. FeTiP PMn ( P 0.01 % , Mn 0.2 %) Ti IF , Mn (Ti,Mn) S . FeTiP . : ; ; Ti IF ; : TG14 :A Development of secondphase particles in TiIF steels with different annealing processes 1 2 2 WANG uocheng , SHI Jing , WANG Xianjin ( 1. School of Material Science and Engineering, Shandong University of Technoloyg, Jinan 250061, China; 2. Department of Metal Forming, University of Science and Technology Beijing, Beijing 100083, China) Abstract: The development of secondphase particles in IF steels with different annealing processes, namely batch an nealing (BA) and continuous annealing (CA) , is investigated. The results show that the morphology of secondphase par ticles forming before annealing, such as TiN, TiS and Ti (CS) , change little in both annealing processes, but TiC be 4 2 haves differently between BA and CA. In CA, there is not a new kind of precipitate, but two new kinds of secondphase particle, FiTiP and (Ti, Mn)S, precipitate in BA. It has been rarely reported so far that FeTiP precipitates andMn ex ists in (Ti, Mn)S form in IF steel with low P ( 0.01%) and low Mn ( 0.2%) during BA. Meanwhile, the structure of two phases is studied, and the effect of coiling temperature on FeTiP precipitation is also discussed. Key words: anneali