Vol.28 No.3 宋波等：非调质钢中钛脱氧产物析出行为 ·247· 40m 40m (@)未加T1600℃淬火样的锻后组织 b)0.0083%T.1600℃淬火样的锻后组织 40m 40μm (©)未加五.1200℃淬火样的锻后组织 (d0.025%T11200℃淬火样的锻后组织 图11加钛前后钢的组织变化 Fig.11 Effect of Ti on the microstructure of the steel 铁素体形成，组织得到细化 Iron and Steel Congress.Nagoya:ISIJ,1990:612 [4]Mizoguchi S,Takamura J I.Control of oxides as inoculants// 参考文献 Proceedings of the Sixth International Iron and Steel Congress [1]方褕，司鹏程，非调质钢的合金设计与热加工工艺及性能 Nagoya:ISIJ,1990:598 特殊钢.1996,17(4)：23 [6]Sun J S,Shim J H,Cho Y W,et al.Non-metallic inclusion [2]Takamura J I,Mizoguchi S.Roles of oxides in steels perfor- and intragranular nucleation of ferrite in Ti-killed C-Mn steel. mance//Proceedings of the Sixth International Iron and Steel Acta Mater,2003,51:15936 [7]Zhang S J,Song B,Liu X H,et al.Morphology,chemical Congress.Nagoya:ISIJ,1990:591 [3]Ogibayashi S,Yamaguchi K,Hirai M.The features of oxides composition and size distribution of rare earth oxides in pure in Ti-deoxidizes steel//Proceedings of the Sixth International iron.J Univ Sci Technol Beijing,2003,10(2):30 Precipitation behavior of Ti-deoxidized products in non-quenched and tempered steel SONG Bo,MAO Jinghong?,WANG Fuming,LUO Zhitao,YANG Ying,YANG Zhanbing 1)Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Materials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083.China ABSTRACT SEM and image analysis technique were used to investigate the morphology,chemical com- position and size distribution of inclusions and the effect of holding time on the size distribution of inclusions in a non-quenched and tempered steel deoxidized by Ti.The results showed that the deoxidation product of Ti in liquid steel could become the nucleus of MnS in solidification of liquid steel.After adding Ti,inclu- sions in the steel were finely distributed.A proper holding time could make inclusions fine.The grains were fine after adding Ti in the steel. KEY WORDS oxide metallurgy;non-quenched and tempered steel;oxide inclusion;size distributiono V l . o 28 N . 3 宋波等 : 非调质钢 中钦脱氧产物析 出行为 7 24 图 加钦 前后钢的组织变化 n g R . e 1 1 E f f e t o f o n z 决 t h e 丽 c o s r t e u r t e . r o f e s 回 t h t 铁 素体形成 , 组织得 到细化 . t 4 」 参 考 文 献 [ 3 ] 方渝 , 司鹏程 . 非调质钢 的合金设计 与热加工工艺及性能 . 特殊钢 , 19 9 6 , 1 7 ( 4 ) : 2 3 T a k azn u r a J l , Mi z 眼 u e h i 5 . oR l e s o f o x id e s i n s t e e l s p e r of r - m a n e e / P r o e e e d i n g 。 o f t h 。 s i x t h I n t e r n a t i on al x or n a n d s t e 〔通 C o n g r e s . N a g o y a : IS I J , 1 99 0 : 5 9 1 O g iha y a s h i S , Y am 堪 u e h i K , H i田 M . T h e f e a t u r e s o f o x id e s i n T i 一 da ) x id i z e s : t e e l / P r o e e e d i馆 5 o f t h e s i x t h r n t e r n a t i o n : L l [ 6 ] 乃. J , . es 1山, r l . L L [ 7 ] Ior n an d St e e l oC n g r e s s . N a 即” : I S IJ , 1 99 0 : 6 1 2 M i z og u e h i S , aT k am u r a J 1 . oC n t or l o f o x id e s a s i n o e u lan t s / P or e e e d i n g s 讨 t h e S i x t h I n t e m a t i on 目 I orn an d S t e eJ 〔戈冰〕g r es . N a 即y a : IS IJ , 1 9 9 0 : 5 9 8 S u n J S , S h im J H , C ho Y W , e t a l . N o n 一 rn e t a ll i e i n e l u s io n a n d i n t r a g r a n u l肚 n u e lea t i o n o f f e r r i t e i n T i 一 ik ll e d C 一 M n s t e e l . A e t a M a t e r , 20 0 3 , 5 1 : 1 5 9 3 6 Z h a n g S J , oS 明 B , L i u X H , e t a l . M o r p ho l o g y , e h em i e a l e om p o s i t i o n an d s认 e d i s t r i b u t i o n of ar r e e a r t h o 五d e s i n p u re i orn . J tJ 川 v s ic 介 e h on l B e ij i n g , 2 0 0 3 , 10 ( 2 ) : 3 0 P r e e ip it a t ion b e ha v io r of iT 一 doe 元id z e d p or du e t s i n on -n q u e n e h e d a xi d t e n l p e r e d s te e l S〔)1 , G 肠 1) , 粼叭 O iJ 妙ogn 2) , W组议子 uF im gn l) , L uo 及 iat o l) , 、悄入心 iY gn l) , y A N G 加inb gn l) l ) M e t a l u r g i e a l an d E e o l o g i e al E眼 i n e e r in g S e h o l , U n i v e rs i t y o f s亏e i e n e e a n d T e c l l n o l o g y B e ij i n g , B e ij i n g 1 0 0 0 8 3 , C h i n a 2 ) M a t e ir a 坛 S e ien e e an d E n 乡n ier n g S e h ol , U n 企ve 二i t y o f S e ien e o an d eT e h n o1 0 g y B iej i n g , B iej 亩n g 1 0 0 0 83 , hC ian A B S T R A C T S E M a n d i m a g e a n a l y s i s t e e h n i q u e w e r e u s e d t o i n v e st i g a t e t h e m o r p h o l o g y , e h e m i e a l e o m - P o s i t i o n a n d s i z e d i s t r i b u t i o n o f i n e l u s i o n s a n d t h e . o ff e e t o f h o ld i n g t i m e o n t h e s i z e d i s t r i b u t i o n o f i n e l u s i o n s i n a n o n 一 q u e n e h e d a n d t e m p e r e d s t e e l d e o x i d i z e d b y T i . T h e r e s u l t s s ho w e d t h a t t h e d e o x i d a t i o n p r o d u e t o f T i i n li q u i d s t e e l e o u ld b e e o m e t h e n u e l e u s o f M n S i n s o li d i fi e a t i o n o f liq u i d s t e e l . A f t e r a d d i n g T i , i n e l u - s i o n s i n t h e s t e e l w e r e fi n e l y d i s t r i b u t e d . A p r o p e r h o l d i n g t i m e e o u ld m a k e i n e l u s i o n s f i n e . T h e g r a i n s w e r e fi n e a f t e r a d d i n g T i i n t h e s t e e l . K E Y WO R D S o x i d e m e t a ll u r g y ; n o 仆q u e n e h e d ,、 n d t e m p e r e d s t e e l ; o x i d e i n e l u s i o n ; s i z e d i s t r i b u t i o n