·548· 北京科技大学学报 2005年第5期 (4)氮化铝在奥氏体晶界的析出会恶化高碳 (14):2038 钢在奥氏体单相区的塑性. [5]Suzuki H G,Nishimura S,Imamura J.Hot ductility in steels in the temperature range between 900 and 600C.Tetsu-to- Hagane,1981,67(8):1180 参考文献 [6]Mintz B,Abu-Shosha R,Shake M.Influence of deformation in- [】葬开科，党紫久.连铸钢高温力学性能。北京科技大学学 duced ferrite,grain boundary sliding,and dynamic recrystalliza- 报，1993,15（增刊）：52 tion on hot ductility of 0.1%0.75%C steels.Mater Sci Technol, [2]Won Y M,Kim K H,Yeo T J.Effect of cooling rate on ZST,LIT 1993,9:907 and ZDT of carbon steel near melting point.ISIJ Int,1998,38 [7]Seol D J,Won Y M,Yeo T J.High temperature deformation be- (10:1093 havior of carbon steel in the austenite and 6-ferrite regions.ISIJ [3]Mintz B.The influence of composition on the hot ductility of Int1999,391:91 steels and the problem of transverse cracking.ISIJ Int,1999,39 [8]Mintz B,Mohamed Z.Influence of manganese and sulphur on (9):833 hot ductility of steels heated directly to temperature.Mater Sci [4]Suzuki HG,Nishimura S,Yamaguchi S.Characteristics of Em- Technol,1989,5(7)1212 brittlement in Steels above 600'C.Tetsu-to-Hagane,1979,65 [9]制钢反应的推荐平衡值.日本学术振兴会，昭和59年.174 High temperature properties of continuous casting high carbon steels WANG Xinhua,ZHU Guosen,YU Huixiang",WANG Wanjun, 1)Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Shougang Research Institute of Technology,Beijing 100041,China ABSTRACT High temperature properties of continuous casting high carbon steels were measured by tensile tests with a Gleeble 1500 system and two embrittlement temperature regions of region I and region III were found.The results indicated that the cause of embrittlement in region I was the existence of liquid film along dendritic inter- faces,and the embrittlement in region III was caused by precipitation of proeutectoid ferrite film along austenite gra- in boundary.AlN precipitation at the full austenite grain boundary would worsen the ductility of the steels KEY WORDS aluminium nitride;high temperature properties;high carbon steel;continuously cast slab54 8 北 京 科 技 大 学 学 报 2 0 5 年 第 5 期 (4 ) 氮化 铝 在奥 氏 体 晶 界 的析 出会 恶 化 高碳 钢在 奥 氏体单 相 区 的塑 性 . 考 文 献 蔡开 科 , 党紫 久 . 连铸钢 高温 力学 性能 . 北京 科技 大学 学 报 , 19 3 , 15 (增刊 ) : 5 2 认七n Y M , K 」. K H , eY o T J . E fe e t o f e o 】i n g r a t e o n Z S T, L叮 阳 d Z D T o f e abr o n set e l n e ar me 1ti n g P o int . I S I J I n t , 19 9 8 , 3 8 ( 10 ) : 10 9 3 M l n t z B . T h e i n fl u e cn e o f e o m P 0 s it ion o n hte h ot d u c t i l ity o f s te e l s an d hte Pm b l e m o f tr a n s v e rs e c r a c ik gn . I S U nI t, 19 99 , 3 9 ( 9 ) : 8 3 3 S u z u k l H G , N i s h比 Du 了a s , b m a g u c ih 5 . C h a r a e t e ir s it e s o f Em - ibr t l e m e n t in S te e l s ab o v e 6 0 0 ,C . 介妞 u -Ot . H a ga n e , 19 7 9 , 6 5 ( 14 ) : 2 0 3 8 [ 5 ] S u z u ik H G , N i s h im ur a S , lm am aur J . H ot d u c t iil ty in s t e e l s i n hte te m pe ar tU 正 r an g e be tw e en 90 0 an d 60 0 ℃ . 介加 u . t o . H a ga n e , 19 8 1 , 6 7( 8 ) : 1 18 0 6[ 」 M in tz B , A b-u S ho s ha R, S加止 e M . l n月 uen ce of de of n 刀 a百on in - du ce d fe ir et , 乎出 n ob nU ds 卿 isl di n g , an d d犯坦m l c 扮` 斗日回 U. . ti on on h o t d u c ti l iyt o f o . 1% ~ 0 . 7 5% C s t e e l s . M a et r S e i 孔 e 血. 0 1 , 19 3 , 9 : 9 0 7 [7 ] S e o l D J , W b n Y M , 、 七。 T J . 比gh t e m pe r a tU 正 de of rm a tion be - h a v i or o f e ar b o n s ot e l in ht e aus t e n ite an d j 一 fe ir te 花 g i ons . I S I J I n t, 19 9 9 , 3 9 ( l ) : 9 1 [8 ] M i n tz B , M o ha 叨e d Z . l n fl uen e e o f 们。a n g aD e s e an d s ul P h ur on b o t du ict lity of s吮15 he ate d d i肥 c t ly ot t e m pe r a tU 此 . M a te r st i eT c h n ul , 19 8 9 , 5 ( 7) : 12 12 9[ 】制钢 反应 的推荐平 衡值 . 日本 学术振 兴会 , 昭和 59 年 . 174 川参2[] 【3 ] 4[ ] H i g h et m P e r a ot er P or P e irt e s o f c o n t i n u o u s c a s t in g hi g h e ar b o n s et e l s 环“ 刃G Xi n加 a , ), Z仔 U G u os e n , ), YU uH 抚 ia 馆 , ), 环又 N G 肠’nju n , , l ) M e at] 】u glr e al aD d E e o l o ig c al 2 ) S h o u g a n g eR s e眼 h nI s it tU t e E n g l n e e n n g S e h o l , U vm e rs ity Of s e i cen e an d eT e hn o l o gy B e ij in g , B e ij igl l 0() 0 8 3 , C ih n a of eT c ho o l o g 丫 B e ij ign 10 04 1 , C场 n a A B S T R A C T H ihg t e m P e r a ut 花 POr P e 币 e s o f e o n it n uo us c a s it n g hi hg e ar b o n s et e l s w e犯 m e as 眠d b y t e n s il e t e s t s w i ht a G l e e b l e 15 0 0 s y s et m an d wt o em b ir t l em e nt t e m P e r a ot 比 m g i o n s o f 雌i o n I an d er ig on l w峨 fo un d . hT e 化s u it s l n d i c at e d ht a t ht e e an s e o f e m b ir t l e m ent in 花g in n 1 w a s het e x i s t e n c e o f liqu id if lnr al o ng d en dr it i e in t e -r fa c e s , an d ht e e m b ir t l e m e in i n er g i o n 1 w as cau s e d b y P二 e iP iat i o n o f P or e u et c t o i d fe irt et if lm a l o n g an s t e n iet gr a - in b o u n d田孚 . A 创 p er c iPl at t i o n at ht e fu ll au s t e n iet gr a i n b o un d ayr w ou l d w o sr e n ht e du e it li yt o f ht e s et e l s . K E Y W O R D S a l u m i n i um n itr de ; hi hg t e m P e ar ot 比 p or P e rt i e ;s hi hg c ar b on set el ; c o n t i n u o u s ly c as t sl ab