·430· 北京科技大学学报 2000年第5期 参考文献 5 Maehara Y,Nagamichi T.Effects of Sulfur on Hot DucTi- 1 Hirowo G Suzuki,Satoshi Nishimura,Jun Imamuraa,et al. lity of Niobium Containing Low Carbon Steels During Hot Ductility in Steel in the Temperature Range between Low Strain Rate Deformation.Mater Sci Technol,1991,7 (10:915 900 and 600'C.Tetsu-to-Hagane,1981,67:1180 2 Mintz B,Mohamed Z.Influence of Manganese and Sulfur 6 Yoichi Ito,Noboru Yonezawa,Kaichi Matsubara.The Ef- on Hot Ductility of Steels Heated Directly to Temperature. fect of Carbon on the Composition of the Eutectic Conju- Mater Sci Technol,1989,5(12):1212 gation in the Fe-Mn-S System and the Equilibrium of Sul- 3 Abushoha R,Ayyad S,Mintz B.Influence of Cooling Rate fides in Solid Steels.Tetsu-to-Hagane,1979,65:1149 and MnS Inclusions on Hot Ductility of Steels.Mater Sci 7 Yoichi Ito,Noboru Yonezawa,Kaichi Matsubara.Eutectic Technol,.1998,14(3):227 Conjugation in Fe-Mn-S System,Tetsu-to-Hagane,1978, 4 Maehara Y,Yasumoto K,Tomono H.Surface Cracking 65:391 Mechanism of Continuously Cast Low Carbon Low Alloy 8 Hillert M.合金中的扩散性相变与合金热力学.李清 Steel Slabs.Mat Sci Technol,1990,6(9):793 斌译.沈阳：辽宁科学技术出版社，1984 Effect of the Mn/S Mass Ratio on the High Temperature Ductility of the Low Carbon Steel under Low Strain Rate LIU Xinyu,WANG Xinhua,WANG Wanjun,ZHOU Youyu 1)Metallurgy School,UST Beijing,Beijing 100083,China 2)Wuhan Iron Steel Corporation,Wuhan 430083,China ABSTRACT The effect of the Mn/S mass ratio on the high temperature ductility of the low carbon steel under low strain rate was researched.The result of the experiments shows that the Mn/S mass ratio has different effect on the high temperature ductility of steel under different temperatures.The effect can be classified into four categories:(1)1350~1 400C,the greater the Mn/S mass ratio is,the poorer the ductility is;(2)1000~1 350C, the Mn/S mass ratio has no effect on the ductility;(3)800-1000C,the greater the ratio of the Mn versus S is, the better the ductility is;(4)600-800C,the greater the mass ratio of the Mn versus S is,the poorer the ductility is.The mechanism of the effect of the Mn/S mass ratio on the high-temperature ductility is also analyzed. KEY WORDS Mn/S mass ratio;high temperature ductility;low carbon steel. 4 0 3 - 520 0 北 京 科 技 大 学 学 报 年 第 期 参 考 文 献 ri H 1 o w o G S u 1 双水 , S a l o s h i N i s h i m u r s, Jun lm am u r a , 改 al . H o t D u e t il iyt in S et e l in ht e eT m P e r at ur e R an g e be tw e n 9 0 0 an d 6 0 0 ℃ . eT st u 一 ot 一 H ag an e , 1 9 8 1 , 6 7 : 1 1 8 0 2 M i n t z B , M ho am e d Z . I n fl u e n e e o f M an g an e s e an d S u l fur o n H o t D u ct i liyt o f Set e l s H e aet d D ier e tl y t o eT m P e ar tL ir e . M at e r S e i eT e hn o l , 19 8 9 , 5 ( 12 ) : 12 1 2 3 A b u s h o h a R, yA y a d S , M l n tZ B . hi fl u e n c e o f C o o lin g R a t e an d M l l S Inc l u s i o ns on H o t D u c t i liyt o f S t e e l s . M at e r S e i eT e hn o l , 1 9 9 8 , 14 ( 3) : 2 27 4 M ae har a Y, Y翻s um o t o K , oT m o n o H . Sur 几e e C acr k in g M e e h an i s m o f C o nt l n u o u s l y C ast L o w C ar b o n L o w A ll o y Set e l S lab s . M at S e i eT e hn o l , 1 9 9 0 , 6( 9 ) : 7 9 3 5 M ae h ar Y, N a g aJ叮 i e ih .T E fe cst o f s u l fur on Hot 功 e iT - l iyt o f N i o b i um C o n at i n ign oL w C ar ob n Set e l s D u r i n g L o w St 妞 i n Rat e D e fo mr at i o n . M a t e r S e i eT e hn o l , 1 9 9 1 , 7 ( 1 0 ) : 9 1 5 6 oY i e hi lot , N ob o ur yo n e z a v v a, K a i e ih M a st u b ar . hT e E -f fe ct o f C ar ob n o n ht e C o m op s it i o n o f ht e E u t e e it e C onj u - g at i o n in ht e F e 一 M n 一 5 S y s et m an d ht e E q u i li ibr um o f s u l - if d e s i n S o lid Set e l s . 介钻 u一。 一 H ag an e , 1 9 7 9 , 6 5 : 1 14 9 7 OY i c hi lot , N o b o ur OY n e z a w 礼 K a l e h i M ast ub ar . E u t e e ti e C o nj u g at i o n in F e 一 M n 一 5 Sy set m , 介st u 一 ot 一 H昭an e , 19 7 8 , 65 : 3 9 1 8 H il e rt M . 合 金 中的扩 散 性相变 与合 金热 力 学 . 李清 斌 译 . 沈 阳 : 辽 宁科 学技术 出版 社 , 1 9 84 E fe e t o f t h e M 川5 M a s s R a t i o o n ht e H i g h eT m P e r a n ir e D u e t ili yt o f ht e L O w C a ht o l S t e e l u n d e r L o w S tr a i n R a t e LI U iX 即己 恻万G iX hn au l), 洲刃 G 肠’unj 1)n, 刀了O U oY州 u Z, 1 )M e alt l欺gy S c h o o l , U S T B e ij in g, B e ij in g l 0 0() 83 , C h in a Z )W ub an l r o n & S te l C o 耳均art i眠 Wu h an 4 3 0() 8 3 , C丘的a A B S T R A C T hT e e fe e t o f ht e M n /5 m a s s r a t i o o n ht e ih gh te m P e r a t ur e d u e ti lity o f ht e l ow e a r b o n s t e e l un de r l ow s atr in r ate w a s re s e acr h e d . hT e re s ult o f ht e e x P e r im e nts hs o w s ht at ht e M n /5 m a s s art i o ha s id fe r e nt e fe e t on ht e ih gh t e m P e r a t 理 e du e it lity o f s te e l un d e r d lfl 笼r e nt te m P e r a it 1r e s . hT e e fe e t e an b e e l a s s iif e d int o of ur e ate g o ir e s : ( l ) 1 3 5 0一 1 4 0 0 oC , ht e ger at e r het M n /5 m a s s r a t l o 1 5 , ht e Po o r er ht e d u c t iliyt i s : ( 2 ) 1 0 0 0一 1 3 5 0 oC , ht e M h /5 m a s s art i o h a s n o e fe e t on t h e d u e it l iyt : ( 3 ) 8 0 0一 1 0 0 0 oC , ht e gr e at e r ht e r at i o o f ht e M n v e r s u s s i s , ht e b e t e r ht e d u e t iliyt 1 5 ; ( 4 ) 6 0卜8 0 0 oC , 山e gr e at e r ht e m as s art i o o f ht e M n v e r s u s 5 1 5 , ht e Po or er ht e d u c it l iyt 1 5 . hT e m e e h an i s m o f the e fe e t o f ht e M 可5 m as s r at i o o n ht e hi hg 一 et m Pe r a n ir e du e t iliyt i s al s o an aly z e d . K E Y W O R D S M n/ S m a s s art i o : h ihg t e m ep r a tL ir e du e it liyt ; l o w e a br on s t e e l