·452. 北京科技大学学报 2005年第4期 Improvment of the quality and mechanical properties of a plain carbon steel by ac- cumulative roll-bonding XU Rongchang",TANG Di,REN Xueping",WEN Yonghong",WANG Xiaohong",WANG Yaogi 1)National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology of Beijing,Beijing 100083, China 2)Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China ABSTRACT Industrial experiments of Q235 plain carbon steel by Accumulitive Roll-Bonding(ARB)process were carried out.The effects of deformation temperature,reduction(the max reduction 98%)and cyclic roling pass on the microstructure and mechanical properties of the steel were investigated.The results showed that a steel with ultrafine grains and higher mechanical properties could be obtained on a plain hot rolling mill by ARB process.It was also proved that the interfacial microstructure was continuous and homogeneous because of the same material rolling. KEY WORDS plain carbon steel;accumulative roll-bonding;microstructure evolvement;mechanical properties (上接第430页) 电工钢，1987(2：159 [8]蔡开科.浇铸与凝園.北京：冶金工业出版社，1992.163 [7何忠治.电工钢.北京：冶金工业出版杜，1997.13 Behavior of microinclusions in cold-rolled non-oriented silicon steel GUO Yanyong,CAl Kaike,LUO Zhonghan,LIU Liangtian LIU Zhimin 1)Metallurgical and Ecological Engineering School,University of Science and Technology Beijing.Beijing 10008,China 2)Wuhan Iron and Steel Group Co,Wuhan 430083,China ABSTRACT The amount,size distribution and style of microinclusions in non-oriented silicon steel sheets with or without calcium treatment were studied by metalloscope,image analytical meter,scan electron microscope and transmission electron microscope.The results show that microinclusions in the range of 0.1 to 0.4 um influence the core loss of silicon steel sheets greatly but the style of microinclusions has less influence. KEY WORDS non-oriented silicon steel sheet;calcium treatment;microinclusions;core loss一 4 5 2 - 北 京 科 技 大 学 学 报 2 0 05 年 第 4 期 Im P r o vm e ni o f th e q u a lity an d m e e h an i e a l P r o P e rt i e s o f a P l a in c a r b o n s t e e l b y a e - e u mu l at i v e r o ll 一 b o n d ing 尤U R o 月 gc h a ng ,毛TA N G D i , ), R E N Xu eP i gn , ), 矽万 N oY n g h o馆 ,气恻刀G iX a o h o 馆 , ), 环月 N G aY o q i ” l ) N at ion al E D g i n e emr g eR s e acr h C e n ter fo r A dy娜 e d R o ll ign eT e hn o l o g y , U in v esr iyt o f s e i e nc e an d eT e ha o l o gy o f B e ij i n g , B e ij in g l 0 00 83 , C h i n a 2 ) B e ij i n g A er on aut i c al M anu af c t团 n g eT c hn o 1 0 g y R e s e ar e h I n st i t u t e , B e ij ign 10 0 0 2 4 , C h in a A B S T R A C T nI du istr a l e x P e ir m e nt s o f Q2 3 5 Plia n e arb o n s te e l by A c c切m u lit i v e oR ll 一 B o dn ign (A 丑B ) rP o e e s s we re c aJ 叮ide o u t . hT e e 月七c t s of de of rm iat on ot m P e r a 奴犷e , er du ict on h(t e m ax er du ict on 98 % ) an d cy icl o olr ign p as s o n ht e m i cr o s lt ” c tL ir e an d m e e h aJ 桩c al rP o P e rt i e s o f ht e s t e e l w e er i n v e s igt at e d . 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